./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:44:05,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:44:05,921 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:44:05,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:44:05,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:44:05,976 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:44:05,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:44:05,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:44:05,980 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:44:05,986 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:44:05,987 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:44:05,987 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:44:05,988 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:44:05,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:44:05,991 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:44:05,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:44:05,992 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:44:05,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:44:05,993 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:44:05,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:44:05,994 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:44:05,995 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:44:05,996 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:44:05,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:44:05,997 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:44:05,997 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:44:05,998 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:44:05,998 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:44:05,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:44:06,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:44:06,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:44:06,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:44:06,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:06,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:44:06,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:44:06,004 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:44:06,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:44:06,004 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:44:06,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:44:06,005 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:44:06,005 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:44:06,006 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_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2023-11-24 21:44:06,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:44:06,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:44:06,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:44:06,389 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:44:06,389 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:44:06,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-24 21:44:09,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:44:09,927 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:44:09,928 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-24 21:44:09,942 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/data/88f4fd751/0fe46e356b93429893c42a94dacf9dc0/FLAG2b5158238 [2023-11-24 21:44:09,962 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/data/88f4fd751/0fe46e356b93429893c42a94dacf9dc0 [2023-11-24 21:44:09,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:44:09,971 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:44:09,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:09,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:44:09,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:44:09,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:09" (1/1) ... [2023-11-24 21:44:09,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389d0637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:09, skipping insertion in model container [2023-11-24 21:44:09,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:09" (1/1) ... [2023-11-24 21:44:10,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:44:10,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:10,296 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 21:44:10,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b0a0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:10, skipping insertion in model container [2023-11-24 21:44:10,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:10,298 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:44:10,300 INFO L158 Benchmark]: Toolchain (without parser) took 328.48ms. Allocated memory is still 151.0MB. Free memory was 103.4MB in the beginning and 93.5MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-24 21:44:10,301 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 151.0MB. Free memory is still 120.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:44:10,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.43ms. Allocated memory is still 151.0MB. Free memory was 103.4MB in the beginning and 93.5MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-24 21:44:10,303 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 151.0MB. Free memory is still 120.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.43ms. Allocated memory is still 151.0MB. Free memory was 103.4MB in the beginning and 93.5MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: 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_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:44:12,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:44:12,984 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:44:12,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:44:12,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:44:13,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:44:13,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:44:13,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:44:13,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:44:13,055 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:44:13,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:44:13,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:44:13,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:44:13,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:44:13,059 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:44:13,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:44:13,060 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:44:13,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:44:13,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:44:13,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:44:13,063 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:44:13,063 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:44:13,064 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:44:13,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:44:13,065 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:44:13,065 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:44:13,066 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:44:13,066 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:44:13,066 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:44:13,067 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:44:13,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:44:13,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:44:13,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:44:13,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:44:13,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:13,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:44:13,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:44:13,072 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:44:13,072 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:44:13,073 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:44:13,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:44:13,073 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:44:13,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:44:13,073 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:44:13,074 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_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2023-11-24 21:44:13,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:44:13,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:44:13,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:44:13,583 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:44:13,583 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:44:13,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-24 21:44:16,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:44:16,950 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:44:16,952 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-24 21:44:16,964 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/data/0ad7b5f3c/3b21210395594dbfb20fced1380619f2/FLAG2263360d3 [2023-11-24 21:44:16,984 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/data/0ad7b5f3c/3b21210395594dbfb20fced1380619f2 [2023-11-24 21:44:16,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:44:16,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:44:16,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:16,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:44:17,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:44:17,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:16" (1/1) ... [2023-11-24 21:44:17,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b72b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17, skipping insertion in model container [2023-11-24 21:44:17,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:16" (1/1) ... [2023-11-24 21:44:17,039 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:44:17,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:17,243 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:44:17,247 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:44:17,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:17,278 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:44:17,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:17,371 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:44:17,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17 WrapperNode [2023-11-24 21:44:17,372 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:17,374 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:44:17,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:44:17,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:44:17,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (1/1) ... [2023-11-24 21:44:17,450 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (1/1) ... [2023-11-24 21:44:17,495 INFO L138 Inliner]: procedures = 27, calls = 47, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 202 [2023-11-24 21:44:17,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:44:17,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:44:17,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:44:17,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:44:17,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (1/1) ... [2023-11-24 21:44:17,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (1/1) ... [2023-11-24 21:44:17,528 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (1/1) ... [2023-11-24 21:44:17,551 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 10 writes are split as follows [0, 7, 1, 1, 1]. [2023-11-24 21:44:17,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (1/1) ... [2023-11-24 21:44:17,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (1/1) ... [2023-11-24 21:44:17,568 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (1/1) ... [2023-11-24 21:44:17,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (1/1) ... [2023-11-24 21:44:17,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (1/1) ... [2023-11-24 21:44:17,579 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (1/1) ... [2023-11-24 21:44:17,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:44:17,585 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:44:17,585 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:44:17,585 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:44:17,586 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (1/1) ... [2023-11-24 21:44:17,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:17,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:44:17,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:44:17,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:44:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:44:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:44:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:44:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:44:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:44:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 21:44:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:44:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:44:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:44:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:44:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:44:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 21:44:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:44:17,680 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:44:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:44:17,681 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:44:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 21:44:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 21:44:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:44:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:44:17,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:44:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:44:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:44:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:44:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:44:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:44:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 21:44:17,687 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 21:44:17,871 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:44:17,873 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:44:18,839 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:44:19,310 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:44:19,311 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-24 21:44:19,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:44:19 BoogieIcfgContainer [2023-11-24 21:44:19,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:44:19,315 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:44:19,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:44:19,319 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:44:19,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:44:16" (1/3) ... [2023-11-24 21:44:19,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153a958b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:44:19, skipping insertion in model container [2023-11-24 21:44:19,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:17" (2/3) ... [2023-11-24 21:44:19,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153a958b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:44:19, skipping insertion in model container [2023-11-24 21:44:19,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:44:19" (3/3) ... [2023-11-24 21:44:19,324 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-11-24 21:44:19,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:44:19,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-24 21:44:19,346 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:44:19,458 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 21:44:19,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 100 transitions, 221 flow [2023-11-24 21:44:19,599 INFO L124 PetriNetUnfolderBase]: 7/97 cut-off events. [2023-11-24 21:44:19,599 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:44:19,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 97 events. 7/97 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 262 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2023-11-24 21:44:19,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 100 transitions, 221 flow [2023-11-24 21:44:19,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 96 transitions, 210 flow [2023-11-24 21:44:19,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:44:19,653 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;@41ac622e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:44:19,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2023-11-24 21:44:19,658 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:44:19,658 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-24 21:44:19,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:44:19,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:19,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:44:19,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-24 21:44:19,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash 788599, now seen corresponding path program 1 times [2023-11-24 21:44:19,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:19,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439273129] [2023-11-24 21:44:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:19,682 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 21:44:19,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:19,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:19,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:19,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:44:19,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:19,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:44:19,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:19,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:44:19,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:19,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:44:19,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:19,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:44:19,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:44:20,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:44:20,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:44:20,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:44:20,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 21:44:20,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:44:20,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:44:20,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:44:20,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:44:20,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:44:20,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:44:20,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:44:20,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:44:20,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:44:20,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:44:20,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:44:20,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:44:20,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:44:20,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:44:20,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:20,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:44:20,336 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 21:44:20,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:44:20,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:20,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439273129] [2023-11-24 21:44:20,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439273129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:20,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:20,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:44:20,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873570016] [2023-11-24 21:44:20,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:20,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:20,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:20,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:20,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 100 [2023-11-24 21:44:20,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 21:44:20,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:20,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 100 [2023-11-24 21:44:20,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:20,947 INFO L124 PetriNetUnfolderBase]: 203/679 cut-off events. [2023-11-24 21:44:20,947 INFO L125 PetriNetUnfolderBase]: For 52/54 co-relation queries the response was YES. [2023-11-24 21:44:20,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 679 events. 203/679 cut-off events. For 52/54 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4477 event pairs, 124 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 894. Up to 294 conditions per place. [2023-11-24 21:44:20,964 INFO L140 encePairwiseOnDemand]: 93/100 looper letters, 31 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-11-24 21:44:20,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 264 flow [2023-11-24 21:44:20,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:20,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2023-11-24 21:44:20,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7366666666666667 [2023-11-24 21:44:20,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 221 transitions. [2023-11-24 21:44:20,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 221 transitions. [2023-11-24 21:44:20,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:20,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 221 transitions. [2023-11-24 21:44:20,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 21:44:20,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 21:44:20,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 21:44:20,997 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 210 flow. Second operand 3 states and 221 transitions. [2023-11-24 21:44:20,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 264 flow [2023-11-24 21:44:21,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 252 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-24 21:44:21,006 INFO L231 Difference]: Finished difference. Result has 89 places, 90 transitions, 190 flow [2023-11-24 21:44:21,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=89, PETRI_TRANSITIONS=90} [2023-11-24 21:44:21,012 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -10 predicate places. [2023-11-24 21:44:21,012 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 90 transitions, 190 flow [2023-11-24 21:44:21,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 21:44:21,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:21,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:44:21,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:21,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:21,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-24 21:44:21,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:21,216 INFO L85 PathProgramCache]: Analyzing trace with hash 788600, now seen corresponding path program 1 times [2023-11-24 21:44:21,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:21,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652540079] [2023-11-24 21:44:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:21,217 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 21:44:21,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:21,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:21,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:21,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:44:21,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:21,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-24 21:44:21,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 21:44:21,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:21,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:21,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:21,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:21,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:21,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:21,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:21,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:21,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:21,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:21,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:21,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:21,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:21,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:21,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:21,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:21,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:21,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:21,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:21,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:21,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:21,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:21,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:21,837 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 21:44:21,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:44:21,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:21,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652540079] [2023-11-24 21:44:21,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652540079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:21,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:21,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:44:21,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634330891] [2023-11-24 21:44:21,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:21,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:44:21,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:21,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:44:21,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:44:22,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 100 [2023-11-24 21:44:22,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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 21:44:22,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:22,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 100 [2023-11-24 21:44:22,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:23,152 INFO L124 PetriNetUnfolderBase]: 207/691 cut-off events. [2023-11-24 21:44:23,152 INFO L125 PetriNetUnfolderBase]: For 13/15 co-relation queries the response was YES. [2023-11-24 21:44:23,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 691 events. 207/691 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4501 event pairs, 124 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 967. Up to 311 conditions per place. [2023-11-24 21:44:23,161 INFO L140 encePairwiseOnDemand]: 83/100 looper letters, 36 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2023-11-24 21:44:23,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 102 transitions, 314 flow [2023-11-24 21:44:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:44:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:44:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-11-24 21:44:23,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7425 [2023-11-24 21:44:23,166 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-11-24 21:44:23,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-11-24 21:44:23,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:23,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-11-24 21:44:23,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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 21:44:23,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 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 21:44:23,171 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 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 21:44:23,172 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 190 flow. Second operand 4 states and 297 transitions. [2023-11-24 21:44:23,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 102 transitions, 314 flow [2023-11-24 21:44:23,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 102 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:23,176 INFO L231 Difference]: Finished difference. Result has 93 places, 102 transitions, 294 flow [2023-11-24 21:44:23,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=93, PETRI_TRANSITIONS=102} [2023-11-24 21:44:23,177 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -6 predicate places. [2023-11-24 21:44:23,177 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 102 transitions, 294 flow [2023-11-24 21:44:23,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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 21:44:23,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:23,178 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-24 21:44:23,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:23,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:23,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-24 21:44:23,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash 757870166, now seen corresponding path program 1 times [2023-11-24 21:44:23,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:23,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103058255] [2023-11-24 21:44:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:23,382 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 21:44:23,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:23,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:23,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:23,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:44:23,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:23,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-24 21:44:23,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:23,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:23,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:23,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:23,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:23,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:23,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:23,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:23,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:23,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:23,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:23,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 21:44:23,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:23,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:23,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:23,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:23,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:23,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:23,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:23,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:23,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:23,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:23,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:23,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:24,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:44:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:24,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:24,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103058255] [2023-11-24 21:44:24,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103058255] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:44:24,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:44:24,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-24 21:44:24,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504552733] [2023-11-24 21:44:24,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:44:24,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:44:24,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:24,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:44:24,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:44:28,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 100 [2023-11-24 21:44:28,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 102 transitions, 294 flow. Second operand has 10 states, 10 states have (on average 62.0) internal successors, (620), 10 states have internal predecessors, (620), 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 21:44:28,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:28,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 100 [2023-11-24 21:44:28,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:31,849 INFO L124 PetriNetUnfolderBase]: 219/727 cut-off events. [2023-11-24 21:44:31,849 INFO L125 PetriNetUnfolderBase]: For 25/27 co-relation queries the response was YES. [2023-11-24 21:44:31,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 727 events. 219/727 cut-off events. For 25/27 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4710 event pairs, 124 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 984. Up to 314 conditions per place. [2023-11-24 21:44:31,860 INFO L140 encePairwiseOnDemand]: 83/100 looper letters, 36 selfloop transitions, 49 changer transitions 0/138 dead transitions. [2023-11-24 21:44:31,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 138 transitions, 626 flow [2023-11-24 21:44:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:44:31,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:44:31,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 707 transitions. [2023-11-24 21:44:31,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.707 [2023-11-24 21:44:31,867 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 707 transitions. [2023-11-24 21:44:31,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 707 transitions. [2023-11-24 21:44:31,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:31,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 707 transitions. [2023-11-24 21:44:31,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.7) internal successors, (707), 10 states have internal predecessors, (707), 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 21:44:31,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 100.0) internal successors, (1100), 11 states have internal predecessors, (1100), 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 21:44:31,878 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 100.0) internal successors, (1100), 11 states have internal predecessors, (1100), 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 21:44:31,878 INFO L175 Difference]: Start difference. First operand has 93 places, 102 transitions, 294 flow. Second operand 10 states and 707 transitions. [2023-11-24 21:44:31,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 138 transitions, 626 flow [2023-11-24 21:44:31,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 138 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:44:31,891 INFO L231 Difference]: Finished difference. Result has 105 places, 138 transitions, 620 flow [2023-11-24 21:44:31,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=620, PETRI_PLACES=105, PETRI_TRANSITIONS=138} [2023-11-24 21:44:31,893 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 6 predicate places. [2023-11-24 21:44:31,893 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 138 transitions, 620 flow [2023-11-24 21:44:31,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.0) internal successors, (620), 10 states have internal predecessors, (620), 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 21:44:31,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:31,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:44:31,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:32,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:32,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-24 21:44:32,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2022208147, now seen corresponding path program 1 times [2023-11-24 21:44:32,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:32,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994912958] [2023-11-24 21:44:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:32,099 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 21:44:32,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:32,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:32,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:32,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 21:44:32,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:32,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,377 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 21:44:32,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 18 [2023-11-24 21:44:32,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,467 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-24 21:44:32,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 1 [2023-11-24 21:44:32,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,523 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:44:32,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-24 21:44:32,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-24 21:44:32,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-24 21:44:32,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,639 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:44:32,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-24 21:44:32,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,678 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 16 treesize of output 13 [2023-11-24 21:44:32,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:32,727 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 16 treesize of output 13 [2023-11-24 21:44:32,784 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:44:32,785 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 21:44:32,817 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 21:44:32,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:44:32,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:32,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994912958] [2023-11-24 21:44:32,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994912958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:32,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:32,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:44:32,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388092280] [2023-11-24 21:44:32,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:32,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:44:32,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:32,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:44:32,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:44:33,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 100 [2023-11-24 21:44:33,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 138 transitions, 620 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:33,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:33,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 100 [2023-11-24 21:44:33,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:33,487 INFO L124 PetriNetUnfolderBase]: 219/717 cut-off events. [2023-11-24 21:44:33,488 INFO L125 PetriNetUnfolderBase]: For 68/70 co-relation queries the response was YES. [2023-11-24 21:44:33,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 717 events. 219/717 cut-off events. For 68/70 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4591 event pairs, 124 based on Foata normal form. 28/520 useless extension candidates. Maximal degree in co-relation 1145. Up to 353 conditions per place. [2023-11-24 21:44:33,497 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 80 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2023-11-24 21:44:33,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 136 transitions, 778 flow [2023-11-24 21:44:33,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:33,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:33,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-11-24 21:44:33,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2023-11-24 21:44:33,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-11-24 21:44:33,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-11-24 21:44:33,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:33,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-11-24 21:44:33,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 21:44:33,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 21:44:33,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 21:44:33,503 INFO L175 Difference]: Start difference. First operand has 105 places, 138 transitions, 620 flow. Second operand 3 states and 224 transitions. [2023-11-24 21:44:33,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 136 transitions, 778 flow [2023-11-24 21:44:33,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 136 transitions, 652 flow, removed 32 selfloop flow, removed 4 redundant places. [2023-11-24 21:44:33,512 INFO L231 Difference]: Finished difference. Result has 101 places, 136 transitions, 492 flow [2023-11-24 21:44:33,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=101, PETRI_TRANSITIONS=136} [2023-11-24 21:44:33,513 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 2 predicate places. [2023-11-24 21:44:33,513 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 136 transitions, 492 flow [2023-11-24 21:44:33,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:33,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:33,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:44:33,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:33,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:33,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-24 21:44:33,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:33,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2022208148, now seen corresponding path program 1 times [2023-11-24 21:44:33,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:33,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163649042] [2023-11-24 21:44:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:33,719 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 21:44:33,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:33,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:33,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:33,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-24 21:44:33,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:33,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:33,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:33,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-24 21:44:33,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:33,973 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 21:44:33,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-24 21:44:34,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-24 21:44:34,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,021 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 15 treesize of output 18 [2023-11-24 21:44:34,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-24 21:44:34,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,075 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 15 treesize of output 18 [2023-11-24 21:44:34,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,144 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 21:44:34,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2023-11-24 21:44:34,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-24 21:44:34,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,279 INFO L349 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2023-11-24 21:44:34,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-24 21:44:34,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-24 21:44:34,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-24 21:44:34,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,397 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 21:44:34,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2023-11-24 21:44:34,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,538 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:44:34,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2023-11-24 21:44:34,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:44:34,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,711 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 21:44:34,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,762 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:44:34,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 32 [2023-11-24 21:44:34,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,875 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 21:44:34,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:34,912 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:44:34,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-11-24 21:44:35,077 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 21:44:35,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:44:35,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:35,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163649042] [2023-11-24 21:44:35,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163649042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:35,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:35,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:44:35,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698062510] [2023-11-24 21:44:35,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:35,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:44:35,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:35,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:44:35,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:44:36,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 100 [2023-11-24 21:44:36,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 136 transitions, 492 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 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 21:44:36,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:36,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 100 [2023-11-24 21:44:36,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:36,927 INFO L124 PetriNetUnfolderBase]: 219/707 cut-off events. [2023-11-24 21:44:36,927 INFO L125 PetriNetUnfolderBase]: For 40/42 co-relation queries the response was YES. [2023-11-24 21:44:36,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 707 events. 219/707 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4444 event pairs, 124 based on Foata normal form. 28/517 useless extension candidates. Maximal degree in co-relation 1179. Up to 353 conditions per place. [2023-11-24 21:44:36,937 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 80 selfloop transitions, 1 changer transitions 0/134 dead transitions. [2023-11-24 21:44:36,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 134 transitions, 650 flow [2023-11-24 21:44:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:36,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:36,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-11-24 21:44:36,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7266666666666667 [2023-11-24 21:44:36,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-11-24 21:44:36,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-11-24 21:44:36,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:36,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-11-24 21:44:36,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 21:44:36,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 21:44:36,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 21:44:36,945 INFO L175 Difference]: Start difference. First operand has 101 places, 136 transitions, 492 flow. Second operand 3 states and 218 transitions. [2023-11-24 21:44:36,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 134 transitions, 650 flow [2023-11-24 21:44:36,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 134 transitions, 649 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:44:36,951 INFO L231 Difference]: Finished difference. Result has 100 places, 134 transitions, 489 flow [2023-11-24 21:44:36,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=489, PETRI_PLACES=100, PETRI_TRANSITIONS=134} [2023-11-24 21:44:36,953 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 1 predicate places. [2023-11-24 21:44:36,953 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 134 transitions, 489 flow [2023-11-24 21:44:36,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 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 21:44:36,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:36,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:36,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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)] Forceful destruction successful, exit code 0 [2023-11-24 21:44:37,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:37,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-24 21:44:37,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:37,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1902541247, now seen corresponding path program 1 times [2023-11-24 21:44:37,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:37,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075144983] [2023-11-24 21:44:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:37,159 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 21:44:37,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:37,160 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:37,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:37,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:44:37,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:37,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-24 21:44:37,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-24 21:44:37,471 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:44:37,476 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:44:37,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:44:37,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:44:37,554 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:44:37,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:44:37,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:44:37,665 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:44:37,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,708 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 21:44:37,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,746 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 21:44:37,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:37,783 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 21:44:37,888 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 21:44:37,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:44:37,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:37,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075144983] [2023-11-24 21:44:37,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075144983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:37,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:37,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:44:37,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331659213] [2023-11-24 21:44:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:37,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:44:37,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:37,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:44:37,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:44:38,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 100 [2023-11-24 21:44:38,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 134 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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 21:44:38,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:38,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 100 [2023-11-24 21:44:38,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:38,763 INFO L124 PetriNetUnfolderBase]: 219/703 cut-off events. [2023-11-24 21:44:38,763 INFO L125 PetriNetUnfolderBase]: For 40/42 co-relation queries the response was YES. [2023-11-24 21:44:38,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 703 events. 219/703 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4412 event pairs, 124 based on Foata normal form. 9/498 useless extension candidates. Maximal degree in co-relation 1175. Up to 353 conditions per place. [2023-11-24 21:44:38,772 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 80 selfloop transitions, 1 changer transitions 0/132 dead transitions. [2023-11-24 21:44:38,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 132 transitions, 647 flow [2023-11-24 21:44:38,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-11-24 21:44:38,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2023-11-24 21:44:38,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-11-24 21:44:38,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-11-24 21:44:38,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:38,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-11-24 21:44:38,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 21:44:38,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 21:44:38,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 21:44:38,779 INFO L175 Difference]: Start difference. First operand has 100 places, 134 transitions, 489 flow. Second operand 3 states and 224 transitions. [2023-11-24 21:44:38,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 132 transitions, 647 flow [2023-11-24 21:44:38,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 132 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:44:38,784 INFO L231 Difference]: Finished difference. Result has 99 places, 132 transitions, 486 flow [2023-11-24 21:44:38,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=99, PETRI_TRANSITIONS=132} [2023-11-24 21:44:38,789 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 0 predicate places. [2023-11-24 21:44:38,789 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 132 transitions, 486 flow [2023-11-24 21:44:38,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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 21:44:38,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:38,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:38,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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)] Forceful destruction successful, exit code 0 [2023-11-24 21:44:39,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:39,000 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-24 21:44:39,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:39,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1902541248, now seen corresponding path program 1 times [2023-11-24 21:44:39,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:39,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143417960] [2023-11-24 21:44:39,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:39,001 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 21:44:39,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:39,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:39,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:39,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:44:39,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:39,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-24 21:44:39,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,265 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:44:39,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-24 21:44:39,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,307 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:44:39,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-24 21:44:39,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-24 21:44:39,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,380 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:44:39,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-24 21:44:39,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 21:44:39,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-24 21:44:39,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,509 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:44:39,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-24 21:44:39,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,550 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 16 treesize of output 13 [2023-11-24 21:44:39,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:39,575 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 16 treesize of output 13 [2023-11-24 21:44:39,626 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:44:39,627 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 21:44:39,720 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 21:44:39,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:44:39,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:39,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143417960] [2023-11-24 21:44:39,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143417960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:39,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:39,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:44:39,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012333185] [2023-11-24 21:44:39,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:39,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:44:39,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:39,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:44:39,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:44:40,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 100 [2023-11-24 21:44:40,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 132 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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 21:44:40,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:40,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 100 [2023-11-24 21:44:40,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:40,342 INFO L124 PetriNetUnfolderBase]: 219/699 cut-off events. [2023-11-24 21:44:40,342 INFO L125 PetriNetUnfolderBase]: For 40/42 co-relation queries the response was YES. [2023-11-24 21:44:40,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 699 events. 219/699 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4364 event pairs, 124 based on Foata normal form. 9/498 useless extension candidates. Maximal degree in co-relation 1171. Up to 353 conditions per place. [2023-11-24 21:44:40,350 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 80 selfloop transitions, 1 changer transitions 0/130 dead transitions. [2023-11-24 21:44:40,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 644 flow [2023-11-24 21:44:40,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-11-24 21:44:40,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2023-11-24 21:44:40,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-11-24 21:44:40,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-11-24 21:44:40,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:40,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-11-24 21:44:40,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 21:44:40,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 21:44:40,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 21:44:40,357 INFO L175 Difference]: Start difference. First operand has 99 places, 132 transitions, 486 flow. Second operand 3 states and 224 transitions. [2023-11-24 21:44:40,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 644 flow [2023-11-24 21:44:40,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 130 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:44:40,362 INFO L231 Difference]: Finished difference. Result has 98 places, 130 transitions, 483 flow [2023-11-24 21:44:40,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=98, PETRI_TRANSITIONS=130} [2023-11-24 21:44:40,363 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -1 predicate places. [2023-11-24 21:44:40,364 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 130 transitions, 483 flow [2023-11-24 21:44:40,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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 21:44:40,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:40,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:40,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:40,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:40,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-24 21:44:40,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:40,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1150813936, now seen corresponding path program 1 times [2023-11-24 21:44:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:40,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362921191] [2023-11-24 21:44:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:40,569 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 21:44:40,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:40,571 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:40,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:40,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:44:40,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:40,775 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 21:44:40,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:44:40,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:40,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362921191] [2023-11-24 21:44:40,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362921191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:40,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:40,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:44:40,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953773319] [2023-11-24 21:44:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:40,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:44:40,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:40,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:44:40,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:44:40,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 100 [2023-11-24 21:44:40,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 130 transitions, 483 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 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 21:44:40,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:40,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 100 [2023-11-24 21:44:40,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:41,522 INFO L124 PetriNetUnfolderBase]: 450/1444 cut-off events. [2023-11-24 21:44:41,522 INFO L125 PetriNetUnfolderBase]: For 53/57 co-relation queries the response was YES. [2023-11-24 21:44:41,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 1444 events. 450/1444 cut-off events. For 53/57 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 10466 event pairs, 244 based on Foata normal form. 4/988 useless extension candidates. Maximal degree in co-relation 2288. Up to 418 conditions per place. [2023-11-24 21:44:41,536 INFO L140 encePairwiseOnDemand]: 84/100 looper letters, 88 selfloop transitions, 24 changer transitions 1/161 dead transitions. [2023-11-24 21:44:41,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 161 transitions, 786 flow [2023-11-24 21:44:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:44:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:44:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2023-11-24 21:44:41,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7766666666666666 [2023-11-24 21:44:41,540 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2023-11-24 21:44:41,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2023-11-24 21:44:41,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:41,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2023-11-24 21:44:41,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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 21:44:41,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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 21:44:41,544 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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 21:44:41,544 INFO L175 Difference]: Start difference. First operand has 98 places, 130 transitions, 483 flow. Second operand 6 states and 466 transitions. [2023-11-24 21:44:41,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 161 transitions, 786 flow [2023-11-24 21:44:41,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 161 transitions, 785 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:44:41,550 INFO L231 Difference]: Finished difference. Result has 106 places, 135 transitions, 596 flow [2023-11-24 21:44:41,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=596, PETRI_PLACES=106, PETRI_TRANSITIONS=135} [2023-11-24 21:44:41,551 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 7 predicate places. [2023-11-24 21:44:41,551 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 135 transitions, 596 flow [2023-11-24 21:44:41,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 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 21:44:41,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:41,552 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-24 21:44:41,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:41,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:41,755 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-24 21:44:41,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1089479408, now seen corresponding path program 2 times [2023-11-24 21:44:41,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:41,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476292956] [2023-11-24 21:44:41,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:44:41,756 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 21:44:41,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:41,757 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:41,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1d3b969-ae62-4968-b90f-a5dd3ea2c795/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 21:44:41,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:44:41,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:44:41,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:44:41,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:41,892 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 8 treesize of output 7 [2023-11-24 21:44:41,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:41,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:41,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:41,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:41,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:41,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:41,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:41,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:41,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:41,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:41,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:41,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:41,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:41,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:41,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:42,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:42,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:42,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:42,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:42,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 21:44:42,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:42,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:42,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:42,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:42,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:42,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:42,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:42,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:42,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:42,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:42,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:42,532 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:42,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:44:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:43,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:43,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476292956] [2023-11-24 21:44:43,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476292956] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:44:43,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:44:43,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-24 21:44:43,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903372431] [2023-11-24 21:44:43,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:44:43,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:44:43,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:43,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:44:43,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:44:51,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 100 [2023-11-24 21:44:51,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 135 transitions, 596 flow. Second operand has 14 states, 14 states have (on average 62.57142857142857) internal successors, (876), 14 states have internal predecessors, (876), 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 21:44:51,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:51,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 100 [2023-11-24 21:44:51,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:59,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 21:45:00,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 21:45:02,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []