./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya --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 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:09:05,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:09:05,622 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 04:09:05,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:09:05,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:09:05,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:09:05,652 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:09:05,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:09:05,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:09:05,654 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:09:05,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:09:05,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:09:05,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:09:05,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:09:05,657 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:09:05,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:09:05,658 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:09:05,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:09:05,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:09:05,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:09:05,660 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:09:05,660 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:09:05,661 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:09:05,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:09:05,661 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:09:05,662 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:09:05,662 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:09:05,662 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:09:05,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:09:05,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:09:05,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:09:05,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:09:05,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:09:05,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:09:05,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:09:05,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:09:05,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:09:05,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:09:05,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:09:05,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:09:05,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:09:05,666 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_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 [2023-11-29 04:09:05,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:09:05,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:09:05,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:09:05,915 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:09:05,916 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:09:05,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2023-11-29 04:09:08,724 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:09:08,893 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:09:08,894 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2023-11-29 04:09:08,902 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/data/5fb8913cb/2e55d37d07304af39311de4b5ae983ab/FLAG2e853c63f [2023-11-29 04:09:08,914 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/data/5fb8913cb/2e55d37d07304af39311de4b5ae983ab [2023-11-29 04:09:08,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:09:08,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:09:08,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:09:08,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:09:08,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:09:08,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:09:08" (1/1) ... [2023-11-29 04:09:08,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db196e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:08, skipping insertion in model container [2023-11-29 04:09:08,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:09:08" (1/1) ... [2023-11-29 04:09:08,954 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:09:09,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:09:09,131 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) [2023-11-29 04:09:09,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39735b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:09, skipping insertion in model container [2023-11-29 04:09:09,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:09:09,132 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 04:09:09,134 INFO L158 Benchmark]: Toolchain (without parser) took 214.72ms. Allocated memory is still 165.7MB. Free memory was 120.5MB in the beginning and 110.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 04:09:09,135 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:09:09,135 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.15ms. Allocated memory is still 165.7MB. Free memory was 120.5MB in the beginning and 110.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 04:09:09,137 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.15ms. Allocated memory is still 165.7MB. Free memory was 120.5MB in the beginning and 110.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 123]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya --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 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:09:10,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:09:10,973 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 04:09:10,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:09:10,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:09:11,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:09:11,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:09:11,005 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:09:11,006 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:09:11,007 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:09:11,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:09:11,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:09:11,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:09:11,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:09:11,010 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:09:11,010 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:09:11,011 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:09:11,011 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:09:11,012 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:09:11,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:09:11,013 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:09:11,013 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:09:11,014 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:09:11,014 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:09:11,015 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:09:11,015 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:09:11,016 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:09:11,016 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:09:11,016 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:09:11,017 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:09:11,017 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:09:11,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:09:11,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:09:11,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:09:11,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:09:11,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:09:11,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:09:11,019 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:09:11,019 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:09:11,020 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:09:11,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:09:11,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:09:11,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:09:11,021 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:09:11,021 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_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 [2023-11-29 04:09:11,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:09:11,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:09:11,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:09:11,332 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:09:11,333 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:09:11,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2023-11-29 04:09:14,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:09:14,230 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:09:14,231 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2023-11-29 04:09:14,240 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/data/d9dae021a/18345232dbf44076b9b5a1b3745f8752/FLAG25c048973 [2023-11-29 04:09:14,255 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/data/d9dae021a/18345232dbf44076b9b5a1b3745f8752 [2023-11-29 04:09:14,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:09:14,259 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:09:14,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:09:14,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:09:14,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:09:14,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14593e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14, skipping insertion in model container [2023-11-29 04:09:14,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,287 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:09:14,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:09:14,462 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 04:09:14,468 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:09:14,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:09:14,495 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:09:14,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:09:14,541 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:09:14,541 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:09:14,549 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:09:14,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14 WrapperNode [2023-11-29 04:09:14,550 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:09:14,551 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:09:14,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:09:14,551 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:09:14,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,614 INFO L138 Inliner]: procedures = 28, calls = 58, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 235 [2023-11-29 04:09:14,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:09:14,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:09:14,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:09:14,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:09:14,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,655 INFO L175 MemorySlicer]: Split 24 memory accesses to 5 slices as follows [2, 2, 2, 2, 16]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 4]. [2023-11-29 04:09:14,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,674 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,679 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,686 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:09:14,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:09:14,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:09:14,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:09:14,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (1/1) ... [2023-11-29 04:09:14,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:09:14,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:09:14,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:09:14,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:09:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:09:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:09:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 04:09:14,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 04:09:14,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 04:09:14,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 04:09:14,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:09:14,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 04:09:14,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 04:09:14,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 04:09:14,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 04:09:14,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 04:09:14,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 04:09:14,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 04:09:14,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 04:09:14,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 04:09:14,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 04:09:14,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 04:09:14,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 04:09:14,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 04:09:14,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:09:14,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:09:14,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:09:14,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:09:14,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 04:09:14,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 04:09:14,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 04:09:14,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 04:09:14,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 04:09:14,771 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:09:14,903 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:09:14,905 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:09:15,706 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:09:16,075 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:09:16,075 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 04:09:16,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:09:16 BoogieIcfgContainer [2023-11-29 04:09:16,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:09:16,078 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:09:16,078 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:09:16,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:09:16,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:09:14" (1/3) ... [2023-11-29 04:09:16,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3423f7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:09:16, skipping insertion in model container [2023-11-29 04:09:16,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:14" (2/3) ... [2023-11-29 04:09:16,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3423f7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:09:16, skipping insertion in model container [2023-11-29 04:09:16,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:09:16" (3/3) ... [2023-11-29 04:09:16,083 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2023-11-29 04:09:16,099 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:09:16,099 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-11-29 04:09:16,099 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:09:16,171 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 04:09:16,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 109 transitions, 239 flow [2023-11-29 04:09:16,250 INFO L124 PetriNetUnfolderBase]: 9/106 cut-off events. [2023-11-29 04:09:16,251 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 04:09:16,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 9/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 294 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-11-29 04:09:16,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 109 transitions, 239 flow [2023-11-29 04:09:16,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 105 transitions, 228 flow [2023-11-29 04:09:16,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:09:16,275 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;@11ce79d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:09:16,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2023-11-29 04:09:16,278 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:09:16,278 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-29 04:09:16,279 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:09:16,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:09:16,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:09:16,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:09:16,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:09:16,284 INFO L85 PathProgramCache]: Analyzing trace with hash 906199, now seen corresponding path program 1 times [2023-11-29 04:09:16,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:09:16,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126191677] [2023-11-29 04:09:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:16,294 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 [2023-11-29 04:09:16,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:09:16,297 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:09:16,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:09:16,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:09:16,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:16,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:09:16,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:09:16,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:09:16,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,544 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 [2023-11-29 04:09:16,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,554 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 [2023-11-29 04:09:16,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,560 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 [2023-11-29 04:09:16,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,573 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 [2023-11-29 04:09:16,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,579 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 [2023-11-29 04:09:16,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,598 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 [2023-11-29 04:09:16,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,607 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 [2023-11-29 04:09:16,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,618 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 [2023-11-29 04:09:16,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,623 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 [2023-11-29 04:09:16,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:09:16,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,641 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 [2023-11-29 04:09:16,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,653 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 [2023-11-29 04:09:16,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,668 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 [2023-11-29 04:09:16,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,678 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 [2023-11-29 04:09:16,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,683 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 [2023-11-29 04:09:16,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,708 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 [2023-11-29 04:09:16,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,734 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 [2023-11-29 04:09:16,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,752 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 [2023-11-29 04:09:16,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,761 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 [2023-11-29 04:09:16,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,780 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 [2023-11-29 04:09:16,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:16,789 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 [2023-11-29 04:09:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:09:16,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:09:16,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:09:16,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126191677] [2023-11-29 04:09:16,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126191677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:09:16,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:09:16,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:09:16,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262858337] [2023-11-29 04:09:16,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:09:16,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:09:16,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:09:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:09:16,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:09:16,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 04:09:16,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 105 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-11-29 04:09:16,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:09:16,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 04:09:16,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:09:18,020 INFO L124 PetriNetUnfolderBase]: 2959/4983 cut-off events. [2023-11-29 04:09:18,020 INFO L125 PetriNetUnfolderBase]: For 281/283 co-relation queries the response was YES. [2023-11-29 04:09:18,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9091 conditions, 4983 events. 2959/4983 cut-off events. For 281/283 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 34924 event pairs, 2124 based on Foata normal form. 1/3393 useless extension candidates. Maximal degree in co-relation 8893. Up to 3872 conditions per place. [2023-11-29 04:09:18,086 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 46 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-11-29 04:09:18,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 98 transitions, 310 flow [2023-11-29 04:09:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:09:18,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:09:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2023-11-29 04:09:18,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6605504587155964 [2023-11-29 04:09:18,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2023-11-29 04:09:18,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2023-11-29 04:09:18,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:09:18,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2023-11-29 04:09:18,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-11-29 04:09:18,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-11-29 04:09:18,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-11-29 04:09:18,114 INFO L175 Difference]: Start difference. First operand has 106 places, 105 transitions, 228 flow. Second operand 3 states and 216 transitions. [2023-11-29 04:09:18,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 98 transitions, 310 flow [2023-11-29 04:09:18,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 298 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 04:09:18,125 INFO L231 Difference]: Finished difference. Result has 95 places, 98 transitions, 206 flow [2023-11-29 04:09:18,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=95, PETRI_TRANSITIONS=98} [2023-11-29 04:09:18,131 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -11 predicate places. [2023-11-29 04:09:18,131 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 98 transitions, 206 flow [2023-11-29 04:09:18,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-11-29 04:09:18,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:09:18,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:09:18,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:18,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:18,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:09:18,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:09:18,333 INFO L85 PathProgramCache]: Analyzing trace with hash 906200, now seen corresponding path program 1 times [2023-11-29 04:09:18,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:09:18,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753983746] [2023-11-29 04:09:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:18,335 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 [2023-11-29 04:09:18,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:09:18,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:09:18,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:09:18,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:09:18,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:18,455 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 23 treesize of output 7 [2023-11-29 04:09:18,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,481 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 [2023-11-29 04:09:18,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,505 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 [2023-11-29 04:09:18,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,515 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 [2023-11-29 04:09:18,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,536 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 [2023-11-29 04:09:18,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,546 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 [2023-11-29 04:09:18,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,570 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 [2023-11-29 04:09:18,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,582 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 [2023-11-29 04:09:18,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,592 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 [2023-11-29 04:09:18,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,603 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 [2023-11-29 04:09:18,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,614 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 [2023-11-29 04:09:18,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,621 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 [2023-11-29 04:09:18,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,633 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 [2023-11-29 04:09:18,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,645 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 [2023-11-29 04:09:18,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,657 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 [2023-11-29 04:09:18,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,664 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 [2023-11-29 04:09:18,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,684 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 [2023-11-29 04:09:18,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,715 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 [2023-11-29 04:09:18,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,730 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 [2023-11-29 04:09:18,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,738 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 [2023-11-29 04:09:18,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,752 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 [2023-11-29 04:09:18,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,771 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 [2023-11-29 04:09:18,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,784 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 [2023-11-29 04:09:18,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:18,792 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 [2023-11-29 04:09:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:09:18,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:09:18,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:09:18,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753983746] [2023-11-29 04:09:18,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753983746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:09:18,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:09:18,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:09:18,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286932309] [2023-11-29 04:09:18,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:09:18,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:09:18,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:09:18,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:09:18,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:09:19,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 04:09:19,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 98 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2023-11-29 04:09:19,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:09:19,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 04:09:19,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:09:20,295 INFO L124 PetriNetUnfolderBase]: 2959/4985 cut-off events. [2023-11-29 04:09:20,295 INFO L125 PetriNetUnfolderBase]: For 67/69 co-relation queries the response was YES. [2023-11-29 04:09:20,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8953 conditions, 4985 events. 2959/4985 cut-off events. For 67/69 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 34922 event pairs, 2124 based on Foata normal form. 0/3392 useless extension candidates. Maximal degree in co-relation 8918. Up to 3884 conditions per place. [2023-11-29 04:09:20,339 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 51 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2023-11-29 04:09:20,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 100 transitions, 316 flow [2023-11-29 04:09:20,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:09:20,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:09:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-11-29 04:09:20,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6636085626911316 [2023-11-29 04:09:20,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-11-29 04:09:20,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-11-29 04:09:20,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:09:20,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-11-29 04:09:20,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2023-11-29 04:09:20,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-11-29 04:09:20,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-11-29 04:09:20,346 INFO L175 Difference]: Start difference. First operand has 95 places, 98 transitions, 206 flow. Second operand 3 states and 217 transitions. [2023-11-29 04:09:20,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 100 transitions, 316 flow [2023-11-29 04:09:20,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 100 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:09:20,349 INFO L231 Difference]: Finished difference. Result has 96 places, 99 transitions, 216 flow [2023-11-29 04:09:20,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=96, PETRI_TRANSITIONS=99} [2023-11-29 04:09:20,350 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -10 predicate places. [2023-11-29 04:09:20,351 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 99 transitions, 216 flow [2023-11-29 04:09:20,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2023-11-29 04:09:20,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:09:20,351 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-29 04:09:20,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 04:09:20,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:20,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:09:20,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:09:20,552 INFO L85 PathProgramCache]: Analyzing trace with hash 870888929, now seen corresponding path program 1 times [2023-11-29 04:09:20,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:09:20,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528834057] [2023-11-29 04:09:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:20,553 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 [2023-11-29 04:09:20,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:09:20,554 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:09:20,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:09:20,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:09:20,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:20,652 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 [2023-11-29 04:09:20,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,666 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 [2023-11-29 04:09:20,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,687 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 [2023-11-29 04:09:20,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,697 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 [2023-11-29 04:09:20,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,708 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 [2023-11-29 04:09:20,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,715 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 [2023-11-29 04:09:20,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,728 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 [2023-11-29 04:09:20,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 04:09:20,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,755 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 [2023-11-29 04:09:20,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,766 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 [2023-11-29 04:09:20,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,774 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 [2023-11-29 04:09:20,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,784 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 [2023-11-29 04:09:20,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 04:09:20,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,818 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 [2023-11-29 04:09:20,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,835 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 [2023-11-29 04:09:20,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,853 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 [2023-11-29 04:09:20,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,885 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 [2023-11-29 04:09:20,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,905 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 [2023-11-29 04:09:20,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,913 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 [2023-11-29 04:09:20,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,923 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 [2023-11-29 04:09:20,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,932 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 [2023-11-29 04:09:20,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,942 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 [2023-11-29 04:09:20,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,954 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 [2023-11-29 04:09:20,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:20,972 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 [2023-11-29 04:09:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:09:21,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:09:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:09:21,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:09:21,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528834057] [2023-11-29 04:09:21,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528834057] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:09:21,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:09:21,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2023-11-29 04:09:21,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037820108] [2023-11-29 04:09:21,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:09:21,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:09:21,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:09:21,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:09:21,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:09:22,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 04:09:22,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 99 transitions, 216 flow. Second operand has 9 states, 9 states have (on average 55.111111111111114) internal successors, (496), 9 states have internal predecessors, (496), 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) [2023-11-29 04:09:22,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:09:22,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 04:09:22,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:09:24,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:09:26,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:09:27,747 INFO L124 PetriNetUnfolderBase]: 2966/5006 cut-off events. [2023-11-29 04:09:27,747 INFO L125 PetriNetUnfolderBase]: For 67/69 co-relation queries the response was YES. [2023-11-29 04:09:27,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9006 conditions, 5006 events. 2966/5006 cut-off events. For 67/69 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 34958 event pairs, 2124 based on Foata normal form. 0/3409 useless extension candidates. Maximal degree in co-relation 8993. Up to 3886 conditions per place. [2023-11-29 04:09:27,786 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 51 selfloop transitions, 23 changer transitions 0/121 dead transitions. [2023-11-29 04:09:27,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 121 transitions, 420 flow [2023-11-29 04:09:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:09:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:09:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 567 transitions. [2023-11-29 04:09:27,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5779816513761468 [2023-11-29 04:09:27,791 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 567 transitions. [2023-11-29 04:09:27,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 567 transitions. [2023-11-29 04:09:27,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:09:27,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 567 transitions. [2023-11-29 04:09:27,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.0) internal successors, (567), 9 states have internal predecessors, (567), 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) [2023-11-29 04:09:27,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 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) [2023-11-29 04:09:27,798 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 109.0) internal successors, (1090), 10 states have internal predecessors, (1090), 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) [2023-11-29 04:09:27,798 INFO L175 Difference]: Start difference. First operand has 96 places, 99 transitions, 216 flow. Second operand 9 states and 567 transitions. [2023-11-29 04:09:27,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 121 transitions, 420 flow [2023-11-29 04:09:27,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 121 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:09:27,802 INFO L231 Difference]: Finished difference. Result has 106 places, 121 transitions, 364 flow [2023-11-29 04:09:27,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=364, PETRI_PLACES=106, PETRI_TRANSITIONS=121} [2023-11-29 04:09:27,804 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 0 predicate places. [2023-11-29 04:09:27,804 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 121 transitions, 364 flow [2023-11-29 04:09:27,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 55.111111111111114) internal successors, (496), 9 states have internal predecessors, (496), 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) [2023-11-29 04:09:27,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:09:27,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:09:27,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 04:09:28,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:28,006 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:09:28,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:09:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash -594250888, now seen corresponding path program 1 times [2023-11-29 04:09:28,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:09:28,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268260872] [2023-11-29 04:09:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:28,008 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 [2023-11-29 04:09:28,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:09:28,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:09:28,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:09:28,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:09:28,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:09:28,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:09:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:09:28,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:09:28,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268260872] [2023-11-29 04:09:28,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268260872] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:09:28,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:09:28,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-11-29 04:09:28,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046603661] [2023-11-29 04:09:28,357 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:09:28,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:09:28,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:09:28,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:09:28,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:09:28,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 109 [2023-11-29 04:09:28,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 121 transitions, 364 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 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) [2023-11-29 04:09:28,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:09:28,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 109 [2023-11-29 04:09:28,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:09:30,826 INFO L124 PetriNetUnfolderBase]: 5927/10310 cut-off events. [2023-11-29 04:09:30,826 INFO L125 PetriNetUnfolderBase]: For 144/148 co-relation queries the response was YES. [2023-11-29 04:09:30,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18362 conditions, 10310 events. 5927/10310 cut-off events. For 144/148 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 83784 event pairs, 4248 based on Foata normal form. 4/6921 useless extension candidates. Maximal degree in co-relation 9182. Up to 3879 conditions per place. [2023-11-29 04:09:30,882 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 84 selfloop transitions, 49 changer transitions 0/183 dead transitions. [2023-11-29 04:09:30,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 183 transitions, 820 flow [2023-11-29 04:09:30,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:09:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:09:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 755 transitions. [2023-11-29 04:09:30,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296914095079232 [2023-11-29 04:09:30,887 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 755 transitions. [2023-11-29 04:09:30,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 755 transitions. [2023-11-29 04:09:30,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:09:30,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 755 transitions. [2023-11-29 04:09:30,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 68.63636363636364) internal successors, (755), 11 states have internal predecessors, (755), 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) [2023-11-29 04:09:30,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 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) [2023-11-29 04:09:30,895 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 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) [2023-11-29 04:09:30,895 INFO L175 Difference]: Start difference. First operand has 106 places, 121 transitions, 364 flow. Second operand 11 states and 755 transitions. [2023-11-29 04:09:30,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 183 transitions, 820 flow [2023-11-29 04:09:30,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 183 transitions, 806 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 04:09:30,903 INFO L231 Difference]: Finished difference. Result has 119 places, 142 transitions, 585 flow [2023-11-29 04:09:30,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=585, PETRI_PLACES=119, PETRI_TRANSITIONS=142} [2023-11-29 04:09:30,904 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 13 predicate places. [2023-11-29 04:09:30,904 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 142 transitions, 585 flow [2023-11-29 04:09:30,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 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) [2023-11-29 04:09:30,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:09:30,905 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-11-29 04:09:30,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:31,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:31,106 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:09:31,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:09:31,106 INFO L85 PathProgramCache]: Analyzing trace with hash 554085083, now seen corresponding path program 1 times [2023-11-29 04:09:31,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:09:31,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045009972] [2023-11-29 04:09:31,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:31,107 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 [2023-11-29 04:09:31,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:09:31,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:09:31,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:09:31,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:09:31,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:31,262 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 [2023-11-29 04:09:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:09:31,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:09:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:09:31,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:09:31,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045009972] [2023-11-29 04:09:31,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045009972] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:09:31,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:09:31,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-29 04:09:31,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641115445] [2023-11-29 04:09:31,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:09:31,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:09:31,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:09:31,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:09:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:09:34,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 04:09:34,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 142 transitions, 585 flow. Second operand has 11 states, 11 states have (on average 55.81818181818182) internal successors, (614), 11 states have internal predecessors, (614), 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) [2023-11-29 04:09:34,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:09:34,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 04:09:34,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:09:36,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:09:37,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:09:40,813 INFO L124 PetriNetUnfolderBase]: 11842/20581 cut-off events. [2023-11-29 04:09:40,813 INFO L125 PetriNetUnfolderBase]: For 289/297 co-relation queries the response was YES. [2023-11-29 04:09:40,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36687 conditions, 20581 events. 11842/20581 cut-off events. For 289/297 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 180403 event pairs, 8496 based on Foata normal form. 4/13810 useless extension candidates. Maximal degree in co-relation 27535. Up to 7760 conditions per place. [2023-11-29 04:09:40,950 INFO L140 encePairwiseOnDemand]: 98/109 looper letters, 98 selfloop transitions, 56 changer transitions 2/203 dead transitions. [2023-11-29 04:09:40,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 203 transitions, 1139 flow [2023-11-29 04:09:40,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:09:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:09:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 772 transitions. [2023-11-29 04:09:40,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902140672782875 [2023-11-29 04:09:40,983 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 772 transitions. [2023-11-29 04:09:40,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 772 transitions. [2023-11-29 04:09:40,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:09:40,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 772 transitions. [2023-11-29 04:09:40,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 64.33333333333333) internal successors, (772), 12 states have internal predecessors, (772), 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) [2023-11-29 04:09:40,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 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) [2023-11-29 04:09:40,992 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 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) [2023-11-29 04:09:40,992 INFO L175 Difference]: Start difference. First operand has 119 places, 142 transitions, 585 flow. Second operand 12 states and 772 transitions. [2023-11-29 04:09:40,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 203 transitions, 1139 flow [2023-11-29 04:09:40,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 203 transitions, 1137 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-29 04:09:41,004 INFO L231 Difference]: Finished difference. Result has 133 places, 157 transitions, 819 flow [2023-11-29 04:09:41,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=819, PETRI_PLACES=133, PETRI_TRANSITIONS=157} [2023-11-29 04:09:41,009 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 27 predicate places. [2023-11-29 04:09:41,009 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 157 transitions, 819 flow [2023-11-29 04:09:41,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 55.81818181818182) internal successors, (614), 11 states have internal predecessors, (614), 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) [2023-11-29 04:09:41,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:09:41,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:09:41,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 04:09:41,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:41,214 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:09:41,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:09:41,215 INFO L85 PathProgramCache]: Analyzing trace with hash -4100272, now seen corresponding path program 1 times [2023-11-29 04:09:41,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:09:41,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138601990] [2023-11-29 04:09:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:41,216 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 [2023-11-29 04:09:41,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:09:41,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:09:41,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:09:41,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:09:41,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:41,412 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 [2023-11-29 04:09:41,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,418 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 [2023-11-29 04:09:41,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,427 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 [2023-11-29 04:09:41,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,441 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 [2023-11-29 04:09:41,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,447 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 [2023-11-29 04:09:41,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,454 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 [2023-11-29 04:09:41,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,466 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 [2023-11-29 04:09:41,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,483 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 [2023-11-29 04:09:41,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,510 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 [2023-11-29 04:09:41,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,527 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 [2023-11-29 04:09:41,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,538 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 [2023-11-29 04:09:41,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,553 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 [2023-11-29 04:09:41,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,572 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 [2023-11-29 04:09:41,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,579 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 [2023-11-29 04:09:41,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,587 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 [2023-11-29 04:09:41,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,592 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 [2023-11-29 04:09:41,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,600 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 [2023-11-29 04:09:41,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,607 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 [2023-11-29 04:09:41,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,614 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 [2023-11-29 04:09:41,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,622 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 [2023-11-29 04:09:41,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:09:41,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:09:41,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,647 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 [2023-11-29 04:09:41,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:41,663 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 [2023-11-29 04:09:41,703 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-29 04:09:41,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 04:09:41,734 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:09:41,735 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 [2023-11-29 04:09:41,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:09:41,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:09:41,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:09:41,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138601990] [2023-11-29 04:09:41,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138601990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:09:41,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:09:41,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:09:41,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942550028] [2023-11-29 04:09:41,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:09:41,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:09:41,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:09:41,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:09:41,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:09:41,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 109 [2023-11-29 04:09:41,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 157 transitions, 819 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2023-11-29 04:09:41,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:09:41,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 109 [2023-11-29 04:09:41,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:09:44,266 INFO L124 PetriNetUnfolderBase]: 11974/20989 cut-off events. [2023-11-29 04:09:44,267 INFO L125 PetriNetUnfolderBase]: For 284/292 co-relation queries the response was YES. [2023-11-29 04:09:44,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37397 conditions, 20989 events. 11974/20989 cut-off events. For 284/292 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 180065 event pairs, 8716 based on Foata normal form. 0/14345 useless extension candidates. Maximal degree in co-relation 37355. Up to 15712 conditions per place. [2023-11-29 04:09:44,384 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 93 selfloop transitions, 15 changer transitions 0/152 dead transitions. [2023-11-29 04:09:44,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 152 transitions, 1025 flow [2023-11-29 04:09:44,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:09:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:09:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2023-11-29 04:09:44,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394495412844037 [2023-11-29 04:09:44,386 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 294 transitions. [2023-11-29 04:09:44,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 294 transitions. [2023-11-29 04:09:44,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:09:44,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 294 transitions. [2023-11-29 04:09:44,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.8) internal successors, (294), 5 states have internal predecessors, (294), 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) [2023-11-29 04:09:44,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2023-11-29 04:09:44,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2023-11-29 04:09:44,389 INFO L175 Difference]: Start difference. First operand has 133 places, 157 transitions, 819 flow. Second operand 5 states and 294 transitions. [2023-11-29 04:09:44,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 152 transitions, 1025 flow [2023-11-29 04:09:44,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 152 transitions, 1000 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-29 04:09:44,397 INFO L231 Difference]: Finished difference. Result has 129 places, 152 transitions, 814 flow [2023-11-29 04:09:44,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=814, PETRI_PLACES=129, PETRI_TRANSITIONS=152} [2023-11-29 04:09:44,398 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 23 predicate places. [2023-11-29 04:09:44,398 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 152 transitions, 814 flow [2023-11-29 04:09:44,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2023-11-29 04:09:44,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:09:44,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:09:44,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 04:09:44,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:44,602 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:09:44,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:09:44,602 INFO L85 PathProgramCache]: Analyzing trace with hash -4100271, now seen corresponding path program 1 times [2023-11-29 04:09:44,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:09:44,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889244025] [2023-11-29 04:09:44,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:44,603 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 [2023-11-29 04:09:44,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:09:44,603 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:09:44,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:09:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:09:44,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:09:44,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:44,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-29 04:09:44,764 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 [2023-11-29 04:09:44,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:09:44,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,787 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 [2023-11-29 04:09:44,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,801 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 [2023-11-29 04:09:44,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,818 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 [2023-11-29 04:09:44,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 04:09:44,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:09:44,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,844 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 [2023-11-29 04:09:44,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,868 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 [2023-11-29 04:09:44,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,877 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 [2023-11-29 04:09:44,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,898 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 [2023-11-29 04:09:44,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,908 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 [2023-11-29 04:09:44,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,943 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 [2023-11-29 04:09:44,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,963 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 [2023-11-29 04:09:44,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,976 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 [2023-11-29 04:09:44,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:09:44,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:44,992 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 [2023-11-29 04:09:45,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:45,004 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 [2023-11-29 04:09:45,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:45,023 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 [2023-11-29 04:09:45,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:45,035 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 [2023-11-29 04:09:45,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:09:45,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:45,051 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 [2023-11-29 04:09:45,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:45,065 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 [2023-11-29 04:09:45,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:09:45,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:45,080 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 [2023-11-29 04:09:45,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:45,093 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 [2023-11-29 04:09:45,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:45,113 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 [2023-11-29 04:09:45,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:45,126 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 [2023-11-29 04:09:45,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:09:45,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:45,145 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 [2023-11-29 04:09:45,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:09:45,275 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 11 [2023-11-29 04:09:45,289 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:09:45,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 04:09:45,357 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-29 04:09:45,357 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 16 treesize of output 18 [2023-11-29 04:09:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:09:45,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:09:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:09:46,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:09:46,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889244025] [2023-11-29 04:09:46,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889244025] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:09:46,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:09:46,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-29 04:09:46,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690600316] [2023-11-29 04:09:46,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:09:46,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:09:46,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:09:46,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:09:46,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:09:54,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:09:58,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:10:02,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 109 [2023-11-29 04:10:02,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 152 transitions, 814 flow. Second operand has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:02,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:02,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 109 [2023-11-29 04:10:02,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:07,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:10:10,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:10:13,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:10:18,929 INFO L124 PetriNetUnfolderBase]: 21326/37002 cut-off events. [2023-11-29 04:10:18,929 INFO L125 PetriNetUnfolderBase]: For 557/573 co-relation queries the response was YES. [2023-11-29 04:10:19,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65989 conditions, 37002 events. 21326/37002 cut-off events. For 557/573 co-relation queries the response was YES. Maximal size of possible extension queue 2086. Compared 347851 event pairs, 15224 based on Foata normal form. 3/25263 useless extension candidates. Maximal degree in co-relation 65947. Up to 13956 conditions per place. [2023-11-29 04:10:19,162 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 150 selfloop transitions, 69 changer transitions 0/259 dead transitions. [2023-11-29 04:10:19,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 259 transitions, 1679 flow [2023-11-29 04:10:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:10:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 04:10:19,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 967 transitions. [2023-11-29 04:10:19,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5544724770642202 [2023-11-29 04:10:19,167 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 967 transitions. [2023-11-29 04:10:19,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 967 transitions. [2023-11-29 04:10:19,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:19,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 967 transitions. [2023-11-29 04:10:19,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 60.4375) internal successors, (967), 16 states have internal predecessors, (967), 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) [2023-11-29 04:10:19,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 109.0) internal successors, (1853), 17 states have internal predecessors, (1853), 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) [2023-11-29 04:10:19,173 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 109.0) internal successors, (1853), 17 states have internal predecessors, (1853), 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) [2023-11-29 04:10:19,174 INFO L175 Difference]: Start difference. First operand has 129 places, 152 transitions, 814 flow. Second operand 16 states and 967 transitions. [2023-11-29 04:10:19,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 259 transitions, 1679 flow [2023-11-29 04:10:19,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 259 transitions, 1651 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:10:19,181 INFO L231 Difference]: Finished difference. Result has 147 places, 171 transitions, 1181 flow [2023-11-29 04:10:19,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1181, PETRI_PLACES=147, PETRI_TRANSITIONS=171} [2023-11-29 04:10:19,181 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 41 predicate places. [2023-11-29 04:10:19,181 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 171 transitions, 1181 flow [2023-11-29 04:10:19,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 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) [2023-11-29 04:10:19,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:19,182 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-29 04:10:19,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 04:10:19,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:10:19,383 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:10:19,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:19,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1989319044, now seen corresponding path program 2 times [2023-11-29 04:10:19,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:10:19,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116119234] [2023-11-29 04:10:19,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:10:19,384 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 [2023-11-29 04:10:19,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:10:19,384 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:10:19,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:10:19,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:10:19,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:10:19,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:10:19,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:19,505 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 [2023-11-29 04:10:19,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,519 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 [2023-11-29 04:10:19,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,542 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 [2023-11-29 04:10:19,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,570 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 [2023-11-29 04:10:19,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,585 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 [2023-11-29 04:10:19,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,594 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 [2023-11-29 04:10:19,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,603 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 [2023-11-29 04:10:19,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,610 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 [2023-11-29 04:10:19,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,621 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 [2023-11-29 04:10:19,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,628 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 [2023-11-29 04:10:19,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,640 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 [2023-11-29 04:10:19,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-29 04:10:19,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,682 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 [2023-11-29 04:10:19,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,696 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 [2023-11-29 04:10:19,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,703 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 [2023-11-29 04:10:19,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,713 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 [2023-11-29 04:10:19,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,725 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 [2023-11-29 04:10:19,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,731 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 [2023-11-29 04:10:19,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,745 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 [2023-11-29 04:10:19,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,762 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 [2023-11-29 04:10:19,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,772 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 [2023-11-29 04:10:19,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,778 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 [2023-11-29 04:10:19,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,785 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 [2023-11-29 04:10:19,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:19,794 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 [2023-11-29 04:10:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:20,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:10:20,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:10:20,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116119234] [2023-11-29 04:10:20,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116119234] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:10:20,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:10:20,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-29 04:10:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080327911] [2023-11-29 04:10:20,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:20,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:10:20,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:10:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:10:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:10:25,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 04:10:25,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 171 transitions, 1181 flow. Second operand has 14 states, 14 states have (on average 55.57142857142857) internal successors, (778), 14 states have internal predecessors, (778), 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) [2023-11-29 04:10:25,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:25,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 04:10:25,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:28,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:10:31,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:10:33,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:10:35,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:10:39,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:10:42,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:10:44,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:10:48,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:10:51,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:10:52,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:10:54,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:10:56,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:10:58,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:11:01,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:11:03,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:11:06,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:11:08,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:11:10,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:11:14,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.47s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:11:16,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:11:22,517 INFO L124 PetriNetUnfolderBase]: 21340/37043 cut-off events. [2023-11-29 04:11:22,517 INFO L125 PetriNetUnfolderBase]: For 722/738 co-relation queries the response was YES. [2023-11-29 04:11:22,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66404 conditions, 37043 events. 21340/37043 cut-off events. For 722/738 co-relation queries the response was YES. Maximal size of possible extension queue 2109. Compared 348802 event pairs, 15224 based on Foata normal form. 19/25142 useless extension candidates. Maximal degree in co-relation 66227. Up to 27948 conditions per place. [2023-11-29 04:11:22,848 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 55 selfloop transitions, 118 changer transitions 0/215 dead transitions. [2023-11-29 04:11:22,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 215 transitions, 2055 flow [2023-11-29 04:11:22,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:11:22,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 04:11:22,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1255 transitions. [2023-11-29 04:11:22,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482743556138051 [2023-11-29 04:11:22,855 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1255 transitions. [2023-11-29 04:11:22,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1255 transitions. [2023-11-29 04:11:22,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:22,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1255 transitions. [2023-11-29 04:11:22,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 59.76190476190476) internal successors, (1255), 21 states have internal predecessors, (1255), 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) [2023-11-29 04:11:22,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 109.0) internal successors, (2398), 22 states have internal predecessors, (2398), 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) [2023-11-29 04:11:22,863 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 109.0) internal successors, (2398), 22 states have internal predecessors, (2398), 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) [2023-11-29 04:11:22,863 INFO L175 Difference]: Start difference. First operand has 147 places, 171 transitions, 1181 flow. Second operand 21 states and 1255 transitions. [2023-11-29 04:11:22,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 215 transitions, 2055 flow [2023-11-29 04:11:22,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 215 transitions, 2043 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 04:11:22,874 INFO L231 Difference]: Finished difference. Result has 172 places, 215 transitions, 2066 flow [2023-11-29 04:11:22,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2066, PETRI_PLACES=172, PETRI_TRANSITIONS=215} [2023-11-29 04:11:22,875 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 66 predicate places. [2023-11-29 04:11:22,876 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 215 transitions, 2066 flow [2023-11-29 04:11:22,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 55.57142857142857) internal successors, (778), 14 states have internal predecessors, (778), 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) [2023-11-29 04:11:22,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:22,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:22,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-29 04:11:23,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:11:23,078 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:11:23,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash -127107476, now seen corresponding path program 1 times [2023-11-29 04:11:23,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:11:23,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423717006] [2023-11-29 04:11:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:23,079 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 [2023-11-29 04:11:23,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:11:23,079 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:11:23,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:11:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:23,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:11:23,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:23,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:11:23,258 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:11:23,258 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 [2023-11-29 04:11:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:11:23,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:11:23,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:11:23,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423717006] [2023-11-29 04:11:23,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423717006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:23,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:23,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:11:23,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337888548] [2023-11-29 04:11:23,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:23,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:11:23,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:11:23,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:11:23,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:11:23,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 109 [2023-11-29 04:11:23,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 215 transitions, 2066 flow. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-29 04:11:23,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:23,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 109 [2023-11-29 04:11:23,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:27,941 INFO L124 PetriNetUnfolderBase]: 21316/36699 cut-off events. [2023-11-29 04:11:27,941 INFO L125 PetriNetUnfolderBase]: For 735/751 co-relation queries the response was YES. [2023-11-29 04:11:28,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66332 conditions, 36699 events. 21316/36699 cut-off events. For 735/751 co-relation queries the response was YES. Maximal size of possible extension queue 2020. Compared 334735 event pairs, 15408 based on Foata normal form. 0/25843 useless extension candidates. Maximal degree in co-relation 66123. Up to 27975 conditions per place. [2023-11-29 04:11:28,261 INFO L140 encePairwiseOnDemand]: 101/109 looper letters, 137 selfloop transitions, 33 changer transitions 0/210 dead transitions. [2023-11-29 04:11:28,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 210 transitions, 2396 flow [2023-11-29 04:11:28,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:11:28,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:11:28,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 297 transitions. [2023-11-29 04:11:28,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.544954128440367 [2023-11-29 04:11:28,263 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 297 transitions. [2023-11-29 04:11:28,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 297 transitions. [2023-11-29 04:11:28,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:28,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 297 transitions. [2023-11-29 04:11:28,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.4) internal successors, (297), 5 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) [2023-11-29 04:11:28,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2023-11-29 04:11:28,266 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2023-11-29 04:11:28,266 INFO L175 Difference]: Start difference. First operand has 172 places, 215 transitions, 2066 flow. Second operand 5 states and 297 transitions. [2023-11-29 04:11:28,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 210 transitions, 2396 flow [2023-11-29 04:11:28,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 210 transitions, 2258 flow, removed 63 selfloop flow, removed 4 redundant places. [2023-11-29 04:11:28,281 INFO L231 Difference]: Finished difference. Result has 167 places, 210 transitions, 1984 flow [2023-11-29 04:11:28,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1984, PETRI_PLACES=167, PETRI_TRANSITIONS=210} [2023-11-29 04:11:28,282 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 61 predicate places. [2023-11-29 04:11:28,282 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 210 transitions, 1984 flow [2023-11-29 04:11:28,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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) [2023-11-29 04:11:28,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:28,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:28,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-29 04:11:28,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:11:28,483 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:11:28,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:28,483 INFO L85 PathProgramCache]: Analyzing trace with hash -127107475, now seen corresponding path program 1 times [2023-11-29 04:11:28,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:11:28,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945535978] [2023-11-29 04:11:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:28,484 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 [2023-11-29 04:11:28,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:11:28,484 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:11:28,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 04:11:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:28,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 04:11:28,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:28,693 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 [2023-11-29 04:11:28,757 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-29 04:11:28,758 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 16 treesize of output 18 [2023-11-29 04:11:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:11:28,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:11:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:11:29,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:11:29,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945535978] [2023-11-29 04:11:29,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945535978] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:11:29,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:11:29,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-29 04:11:29,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453616622] [2023-11-29 04:11:29,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:11:29,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:11:29,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:11:29,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:11:29,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:11:31,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 109 [2023-11-29 04:11:31,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 210 transitions, 1984 flow. Second operand has 11 states, 11 states have (on average 57.18181818181818) internal successors, (629), 11 states have internal predecessors, (629), 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) [2023-11-29 04:11:31,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:31,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 109 [2023-11-29 04:11:31,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:37,106 INFO L124 PetriNetUnfolderBase]: 14248/24718 cut-off events. [2023-11-29 04:11:37,107 INFO L125 PetriNetUnfolderBase]: For 596/608 co-relation queries the response was YES. [2023-11-29 04:11:37,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44623 conditions, 24718 events. 14248/24718 cut-off events. For 596/608 co-relation queries the response was YES. Maximal size of possible extension queue 1200. Compared 215908 event pairs, 10092 based on Foata normal form. 4/17203 useless extension candidates. Maximal degree in co-relation 44557. Up to 15545 conditions per place. [2023-11-29 04:11:37,366 INFO L140 encePairwiseOnDemand]: 99/109 looper letters, 140 selfloop transitions, 51 changer transitions 0/230 dead transitions. [2023-11-29 04:11:37,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 230 transitions, 2231 flow [2023-11-29 04:11:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:11:37,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 04:11:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 993 transitions. [2023-11-29 04:11:37,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5693807339449541 [2023-11-29 04:11:37,372 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 993 transitions. [2023-11-29 04:11:37,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 993 transitions. [2023-11-29 04:11:37,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:37,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 993 transitions. [2023-11-29 04:11:37,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 62.0625) internal successors, (993), 16 states have internal predecessors, (993), 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) [2023-11-29 04:11:37,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 109.0) internal successors, (1853), 17 states have internal predecessors, (1853), 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) [2023-11-29 04:11:37,379 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 109.0) internal successors, (1853), 17 states have internal predecessors, (1853), 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) [2023-11-29 04:11:37,379 INFO L175 Difference]: Start difference. First operand has 167 places, 210 transitions, 1984 flow. Second operand 16 states and 993 transitions. [2023-11-29 04:11:37,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 230 transitions, 2231 flow [2023-11-29 04:11:37,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 230 transitions, 2095 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-29 04:11:37,392 INFO L231 Difference]: Finished difference. Result has 172 places, 191 transitions, 1711 flow [2023-11-29 04:11:37,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1711, PETRI_PLACES=172, PETRI_TRANSITIONS=191} [2023-11-29 04:11:37,393 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 66 predicate places. [2023-11-29 04:11:37,393 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 191 transitions, 1711 flow [2023-11-29 04:11:37,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 57.18181818181818) internal successors, (629), 11 states have internal predecessors, (629), 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) [2023-11-29 04:11:37,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:37,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:37,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 04:11:37,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:11:37,594 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:11:37,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:37,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1503335787, now seen corresponding path program 1 times [2023-11-29 04:11:37,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:11:37,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290366714] [2023-11-29 04:11:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:37,595 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 [2023-11-29 04:11:37,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:11:37,596 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:11:37,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (12)] Waiting until timeout for monitored process [2023-11-29 04:11:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:37,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:11:37,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:37,850 INFO L349 Elim1Store]: treesize reduction 99, result has 18.9 percent of original size [2023-11-29 04:11:37,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 41 [2023-11-29 04:11:37,892 INFO L349 Elim1Store]: treesize reduction 78, result has 1.3 percent of original size [2023-11-29 04:11:37,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 1 [2023-11-29 04:11:38,026 INFO L349 Elim1Store]: treesize reduction 28, result has 54.1 percent of original size [2023-11-29 04:11:38,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 57 [2023-11-29 04:11:38,244 INFO L349 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-11-29 04:11:38,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 71 [2023-11-29 04:11:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:11:40,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:11:40,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:11:40,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290366714] [2023-11-29 04:11:40,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290366714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:40,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:40,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:11:40,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183438118] [2023-11-29 04:11:40,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:40,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:11:40,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:11:40,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:11:40,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:11:41,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 109 [2023-11-29 04:11:41,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 191 transitions, 1711 flow. Second operand has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 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) [2023-11-29 04:11:41,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:41,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 109 [2023-11-29 04:11:41,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:45,152 INFO L124 PetriNetUnfolderBase]: 17728/30130 cut-off events. [2023-11-29 04:11:45,152 INFO L125 PetriNetUnfolderBase]: For 635/647 co-relation queries the response was YES. [2023-11-29 04:11:45,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54804 conditions, 30130 events. 17728/30130 cut-off events. For 635/647 co-relation queries the response was YES. Maximal size of possible extension queue 1310. Compared 253895 event pairs, 13020 based on Foata normal form. 2598/24334 useless extension candidates. Maximal degree in co-relation 54742. Up to 23421 conditions per place. [2023-11-29 04:11:45,400 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 154 selfloop transitions, 1 changer transitions 0/189 dead transitions. [2023-11-29 04:11:45,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 189 transitions, 2017 flow [2023-11-29 04:11:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:11:45,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:11:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2023-11-29 04:11:45,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6330275229357798 [2023-11-29 04:11:45,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 207 transitions. [2023-11-29 04:11:45,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 207 transitions. [2023-11-29 04:11:45,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:45,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 207 transitions. [2023-11-29 04:11:45,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2023-11-29 04:11:45,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-11-29 04:11:45,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-11-29 04:11:45,405 INFO L175 Difference]: Start difference. First operand has 172 places, 191 transitions, 1711 flow. Second operand 3 states and 207 transitions. [2023-11-29 04:11:45,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 189 transitions, 2017 flow [2023-11-29 04:11:45,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 189 transitions, 2000 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 04:11:45,414 INFO L231 Difference]: Finished difference. Result has 167 places, 189 transitions, 1692 flow [2023-11-29 04:11:45,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1692, PETRI_PLACES=167, PETRI_TRANSITIONS=189} [2023-11-29 04:11:45,415 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 61 predicate places. [2023-11-29 04:11:45,415 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 189 transitions, 1692 flow [2023-11-29 04:11:45,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 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) [2023-11-29 04:11:45,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:45,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:45,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (12)] Forceful destruction successful, exit code 0 [2023-11-29 04:11:45,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:11:45,616 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:11:45,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:45,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1503335788, now seen corresponding path program 1 times [2023-11-29 04:11:45,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:11:45,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390958017] [2023-11-29 04:11:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:45,617 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 [2023-11-29 04:11:45,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:11:45,617 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:11:45,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (13)] Waiting until timeout for monitored process [2023-11-29 04:11:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:45,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 04:11:45,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:45,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 04:11:45,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-29 04:11:45,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:45,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:45,875 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 13 [2023-11-29 04:11:45,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:45,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:45,881 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:11:45,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:45,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:45,921 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 13 [2023-11-29 04:11:45,925 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:11:45,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:45,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:45,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:45,987 INFO L349 Elim1Store]: treesize reduction 19, result has 13.6 percent of original size [2023-11-29 04:11:45,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 11 [2023-11-29 04:11:45,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:45,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:46,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:46,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:11:46,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:11:46,046 INFO L349 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-11-29 04:11:46,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:11:46,069 INFO L349 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-11-29 04:11:46,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:11:46,318 INFO L349 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2023-11-29 04:11:46,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 37 [2023-11-29 04:11:46,510 INFO L349 Elim1Store]: treesize reduction 72, result has 18.2 percent of original size [2023-11-29 04:11:46,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 36 [2023-11-29 04:11:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:11:46,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:11:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:11:48,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:11:48,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390958017] [2023-11-29 04:11:48,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390958017] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:11:48,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:11:48,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2023-11-29 04:11:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069980567] [2023-11-29 04:11:48,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:11:48,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:11:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:11:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:11:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:11:54,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 109 [2023-11-29 04:11:54,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 189 transitions, 1692 flow. Second operand has 13 states, 13 states have (on average 49.30769230769231) internal successors, (641), 13 states have internal predecessors, (641), 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) [2023-11-29 04:11:54,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:54,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 109 [2023-11-29 04:11:54,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:12:04,517 INFO L124 PetriNetUnfolderBase]: 21688/34410 cut-off events. [2023-11-29 04:12:04,517 INFO L125 PetriNetUnfolderBase]: For 435/435 co-relation queries the response was YES. [2023-11-29 04:12:04,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63838 conditions, 34410 events. 21688/34410 cut-off events. For 435/435 co-relation queries the response was YES. Maximal size of possible extension queue 1630. Compared 282020 event pairs, 15942 based on Foata normal form. 0/24173 useless extension candidates. Maximal degree in co-relation 63803. Up to 23457 conditions per place. [2023-11-29 04:12:04,802 INFO L140 encePairwiseOnDemand]: 95/109 looper letters, 117 selfloop transitions, 94 changer transitions 0/239 dead transitions. [2023-11-29 04:12:04,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 239 transitions, 2292 flow [2023-11-29 04:12:04,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 04:12:04,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 04:12:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 982 transitions. [2023-11-29 04:12:04,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005096839959225 [2023-11-29 04:12:04,806 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 982 transitions. [2023-11-29 04:12:04,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 982 transitions. [2023-11-29 04:12:04,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:12:04,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 982 transitions. [2023-11-29 04:12:04,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 54.55555555555556) internal successors, (982), 18 states have internal predecessors, (982), 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) [2023-11-29 04:12:04,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 109.0) internal successors, (2071), 19 states have internal predecessors, (2071), 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) [2023-11-29 04:12:04,813 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 109.0) internal successors, (2071), 19 states have internal predecessors, (2071), 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) [2023-11-29 04:12:04,813 INFO L175 Difference]: Start difference. First operand has 167 places, 189 transitions, 1692 flow. Second operand 18 states and 982 transitions. [2023-11-29 04:12:04,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 239 transitions, 2292 flow [2023-11-29 04:12:04,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 239 transitions, 2291 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:12:04,823 INFO L231 Difference]: Finished difference. Result has 186 places, 191 transitions, 1951 flow [2023-11-29 04:12:04,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1951, PETRI_PLACES=186, PETRI_TRANSITIONS=191} [2023-11-29 04:12:04,823 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 80 predicate places. [2023-11-29 04:12:04,824 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 191 transitions, 1951 flow [2023-11-29 04:12:04,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 49.30769230769231) internal successors, (641), 13 states have internal predecessors, (641), 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) [2023-11-29 04:12:04,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:12:04,824 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:04,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (13)] Ended with exit code 0 [2023-11-29 04:12:05,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:12:05,025 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:12:05,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:05,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1919418284, now seen corresponding path program 2 times [2023-11-29 04:12:05,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:05,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155300693] [2023-11-29 04:12:05,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:12:05,026 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 [2023-11-29 04:12:05,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:05,027 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:12:05,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (14)] Waiting until timeout for monitored process [2023-11-29 04:12:05,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:12:05,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:12:05,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 04:12:05,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:05,129 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 [2023-11-29 04:12:05,142 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 7 [2023-11-29 04:12:05,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,157 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 [2023-11-29 04:12:05,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-29 04:12:05,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,211 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 [2023-11-29 04:12:05,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,232 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 [2023-11-29 04:12:05,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,242 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 [2023-11-29 04:12:05,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,254 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 [2023-11-29 04:12:05,261 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 [2023-11-29 04:12:05,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,270 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 [2023-11-29 04:12:05,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 04:12:05,288 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 [2023-11-29 04:12:05,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:12:05,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,317 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 [2023-11-29 04:12:05,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,326 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 [2023-11-29 04:12:05,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,338 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 [2023-11-29 04:12:05,345 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 [2023-11-29 04:12:05,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,355 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 [2023-11-29 04:12:05,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,366 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 [2023-11-29 04:12:05,372 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 [2023-11-29 04:12:05,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,381 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 [2023-11-29 04:12:05,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,401 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 [2023-11-29 04:12:05,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,411 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 [2023-11-29 04:12:05,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,423 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 [2023-11-29 04:12:05,429 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 [2023-11-29 04:12:05,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,438 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 [2023-11-29 04:12:05,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,448 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 [2023-11-29 04:12:05,455 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 [2023-11-29 04:12:05,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,464 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 [2023-11-29 04:12:05,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,483 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 [2023-11-29 04:12:05,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,493 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 [2023-11-29 04:12:05,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:05,664 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 11 [2023-11-29 04:12:05,675 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:12:05,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 04:12:05,738 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-29 04:12:05,738 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 16 treesize of output 18 [2023-11-29 04:12:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:12:05,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:05,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:05,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155300693] [2023-11-29 04:12:05,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155300693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:05,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:05,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:12:05,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270004660] [2023-11-29 04:12:05,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:05,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:12:05,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:05,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:12:05,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:12:06,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 109 [2023-11-29 04:12:06,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 191 transitions, 1951 flow. Second operand has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 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) [2023-11-29 04:12:06,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:12:06,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 109 [2023-11-29 04:12:06,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:12:09,227 INFO L124 PetriNetUnfolderBase]: 14248/24034 cut-off events. [2023-11-29 04:12:09,228 INFO L125 PetriNetUnfolderBase]: For 714/726 co-relation queries the response was YES. [2023-11-29 04:12:09,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44063 conditions, 24034 events. 14248/24034 cut-off events. For 714/726 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 202576 event pairs, 10092 based on Foata normal form. 2/17076 useless extension candidates. Maximal degree in co-relation 44023. Up to 18652 conditions per place. [2023-11-29 04:12:09,428 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 130 selfloop transitions, 24 changer transitions 0/190 dead transitions. [2023-11-29 04:12:09,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 190 transitions, 2253 flow [2023-11-29 04:12:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:12:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:12:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 307 transitions. [2023-11-29 04:12:09,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563302752293578 [2023-11-29 04:12:09,431 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 307 transitions. [2023-11-29 04:12:09,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 307 transitions. [2023-11-29 04:12:09,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:12:09,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 307 transitions. [2023-11-29 04:12:09,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 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) [2023-11-29 04:12:09,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2023-11-29 04:12:09,433 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2023-11-29 04:12:09,433 INFO L175 Difference]: Start difference. First operand has 186 places, 191 transitions, 1951 flow. Second operand 5 states and 307 transitions. [2023-11-29 04:12:09,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 190 transitions, 2253 flow [2023-11-29 04:12:09,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 190 transitions, 2161 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-11-29 04:12:09,444 INFO L231 Difference]: Finished difference. Result has 180 places, 190 transitions, 1901 flow [2023-11-29 04:12:09,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1901, PETRI_PLACES=180, PETRI_TRANSITIONS=190} [2023-11-29 04:12:09,445 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 74 predicate places. [2023-11-29 04:12:09,445 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 190 transitions, 1901 flow [2023-11-29 04:12:09,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 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) [2023-11-29 04:12:09,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:12:09,445 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 2, 2, 1, 1, 1] [2023-11-29 04:12:09,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (14)] Ended with exit code 0 [2023-11-29 04:12:09,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:12:09,646 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:12:09,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:09,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1582470302, now seen corresponding path program 2 times [2023-11-29 04:12:09,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:09,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243985578] [2023-11-29 04:12:09,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:12:09,646 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 [2023-11-29 04:12:09,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:09,647 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:12:09,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (15)] Waiting until timeout for monitored process [2023-11-29 04:12:09,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:12:09,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:12:09,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 04:12:09,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:09,876 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 [2023-11-29 04:12:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:12:10,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:11,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:11,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243985578] [2023-11-29 04:12:11,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243985578] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:11,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:12:11,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2023-11-29 04:12:11,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797131473] [2023-11-29 04:12:11,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:11,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:12:11,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:11,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:12:11,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:12:18,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2023-11-29 04:12:18,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 190 transitions, 1901 flow. Second operand has 18 states, 18 states have (on average 55.94444444444444) internal successors, (1007), 18 states have internal predecessors, (1007), 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) [2023-11-29 04:12:18,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:12:18,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2023-11-29 04:12:18,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:12:21,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:12:24,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:12:26,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:12:30,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 04:12:34,687 INFO L124 PetriNetUnfolderBase]: 18999/32057 cut-off events. [2023-11-29 04:12:34,687 INFO L125 PetriNetUnfolderBase]: For 966/982 co-relation queries the response was YES. [2023-11-29 04:12:34,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58812 conditions, 32057 events. 18999/32057 cut-off events. For 966/982 co-relation queries the response was YES. Maximal size of possible extension queue 1459. Compared 279510 event pairs, 13456 based on Foata normal form. 5/22860 useless extension candidates. Maximal degree in co-relation 58774. Up to 15564 conditions per place. [2023-11-29 04:12:34,982 INFO L140 encePairwiseOnDemand]: 97/109 looper letters, 114 selfloop transitions, 131 changer transitions 2/280 dead transitions. [2023-11-29 04:12:34,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 280 transitions, 3246 flow [2023-11-29 04:12:34,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 04:12:34,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 04:12:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1355 transitions. [2023-11-29 04:12:34,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650542118432027 [2023-11-29 04:12:34,986 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1355 transitions. [2023-11-29 04:12:34,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1355 transitions. [2023-11-29 04:12:34,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:12:34,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1355 transitions. [2023-11-29 04:12:34,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 61.59090909090909) internal successors, (1355), 22 states have internal predecessors, (1355), 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) [2023-11-29 04:12:34,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 109.0) internal successors, (2507), 23 states have internal predecessors, (2507), 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) [2023-11-29 04:12:34,993 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 109.0) internal successors, (2507), 23 states have internal predecessors, (2507), 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) [2023-11-29 04:12:34,993 INFO L175 Difference]: Start difference. First operand has 180 places, 190 transitions, 1901 flow. Second operand 22 states and 1355 transitions. [2023-11-29 04:12:34,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 280 transitions, 3246 flow [2023-11-29 04:12:35,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 280 transitions, 3200 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:12:35,007 INFO L231 Difference]: Finished difference. Result has 202 places, 229 transitions, 2758 flow [2023-11-29 04:12:35,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2758, PETRI_PLACES=202, PETRI_TRANSITIONS=229} [2023-11-29 04:12:35,007 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 96 predicate places. [2023-11-29 04:12:35,007 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 229 transitions, 2758 flow [2023-11-29 04:12:35,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.94444444444444) internal successors, (1007), 18 states have internal predecessors, (1007), 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) [2023-11-29 04:12:35,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:12:35,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:35,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (15)] Ended with exit code 0 [2023-11-29 04:12:35,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:12:35,209 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:12:35,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:35,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2041558920, now seen corresponding path program 1 times [2023-11-29 04:12:35,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:35,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014214325] [2023-11-29 04:12:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:35,209 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 [2023-11-29 04:12:35,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:35,210 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:12:35,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (16)] Waiting until timeout for monitored process [2023-11-29 04:12:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:35,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:12:35,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:35,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,413 INFO L349 Elim1Store]: treesize reduction 35, result has 23.9 percent of original size [2023-11-29 04:12:35,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 19 [2023-11-29 04:12:35,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,428 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 [2023-11-29 04:12:35,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,447 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 [2023-11-29 04:12:35,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,482 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-29 04:12:35,482 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 [2023-11-29 04:12:35,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,492 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 [2023-11-29 04:12:35,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,514 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-29 04:12:35,514 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 [2023-11-29 04:12:35,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,538 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-29 04:12:35,538 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 [2023-11-29 04:12:35,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:35,548 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 [2023-11-29 04:12:35,583 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-11-29 04:12:35,583 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 20 treesize of output 21 [2023-11-29 04:12:35,639 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-29 04:12:35,639 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 21 treesize of output 31 [2023-11-29 04:12:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:12:35,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:12:35,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:35,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014214325] [2023-11-29 04:12:35,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014214325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:35,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:35,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:12:35,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327623868] [2023-11-29 04:12:35,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:35,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:12:35,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:12:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:12:36,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 109 [2023-11-29 04:12:36,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 229 transitions, 2758 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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) [2023-11-29 04:12:36,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:12:36,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 109 [2023-11-29 04:12:36,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:12:41,767 INFO L124 PetriNetUnfolderBase]: 24551/41225 cut-off events. [2023-11-29 04:12:41,767 INFO L125 PetriNetUnfolderBase]: For 1032/1032 co-relation queries the response was YES. [2023-11-29 04:12:42,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75805 conditions, 41225 events. 24551/41225 cut-off events. For 1032/1032 co-relation queries the response was YES. Maximal size of possible extension queue 1661. Compared 353658 event pairs, 18080 based on Foata normal form. 0/30233 useless extension candidates. Maximal degree in co-relation 75763. Up to 32553 conditions per place. [2023-11-29 04:12:42,127 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 197 selfloop transitions, 1 changer transitions 0/227 dead transitions. [2023-11-29 04:12:42,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 227 transitions, 3150 flow [2023-11-29 04:12:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:12:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:12:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2023-11-29 04:12:42,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6207951070336392 [2023-11-29 04:12:42,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 203 transitions. [2023-11-29 04:12:42,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 203 transitions. [2023-11-29 04:12:42,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:12:42,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 203 transitions. [2023-11-29 04:12:42,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2023-11-29 04:12:42,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-11-29 04:12:42,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-11-29 04:12:42,131 INFO L175 Difference]: Start difference. First operand has 202 places, 229 transitions, 2758 flow. Second operand 3 states and 203 transitions. [2023-11-29 04:12:42,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 227 transitions, 3150 flow [2023-11-29 04:12:42,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 227 transitions, 3022 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-29 04:12:42,154 INFO L231 Difference]: Finished difference. Result has 198 places, 227 transitions, 2628 flow [2023-11-29 04:12:42,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=2626, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2628, PETRI_PLACES=198, PETRI_TRANSITIONS=227} [2023-11-29 04:12:42,155 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 92 predicate places. [2023-11-29 04:12:42,155 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 227 transitions, 2628 flow [2023-11-29 04:12:42,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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) [2023-11-29 04:12:42,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:12:42,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:42,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (16)] Ended with exit code 0 [2023-11-29 04:12:42,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:12:42,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:12:42,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:42,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2041558919, now seen corresponding path program 1 times [2023-11-29 04:12:42,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:12:42,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504775814] [2023-11-29 04:12:42,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:42,357 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 [2023-11-29 04:12:42,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:12:42,358 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:12:42,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (17)] Waiting until timeout for monitored process [2023-11-29 04:12:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:42,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:12:42,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:42,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:42,591 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 04:12:42,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-11-29 04:12:42,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 04:12:42,628 INFO L349 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-11-29 04:12:42,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:12:42,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:42,660 INFO L349 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-11-29 04:12:42,660 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 1 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:12:42,679 INFO L349 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-11-29 04:12:42,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:12:42,699 INFO L349 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-11-29 04:12:42,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:12:42,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:42,732 INFO L349 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-11-29 04:12:42,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:12:42,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:42,789 INFO L349 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-11-29 04:12:42,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 04:12:42,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:42,821 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 13 [2023-11-29 04:12:42,824 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:12:42,825 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:12:43,062 INFO L349 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2023-11-29 04:12:43,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 30 [2023-11-29 04:12:43,225 INFO L349 Elim1Store]: treesize reduction 72, result has 18.2 percent of original size [2023-11-29 04:12:43,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 36 [2023-11-29 04:12:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:12:43,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:12:44,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:12:44,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504775814] [2023-11-29 04:12:44,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504775814] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:44,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:12:44,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2023-11-29 04:12:44,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823376031] [2023-11-29 04:12:44,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:44,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:12:44,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:12:44,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:12:44,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:12:53,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 109 [2023-11-29 04:12:53,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 227 transitions, 2628 flow. Second operand has 13 states, 13 states have (on average 49.61538461538461) internal successors, (645), 13 states have internal predecessors, (645), 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) [2023-11-29 04:12:53,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:12:53,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 109 [2023-11-29 04:12:53,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:02,761 INFO L124 PetriNetUnfolderBase]: 19922/33582 cut-off events. [2023-11-29 04:13:02,761 INFO L125 PetriNetUnfolderBase]: For 988/988 co-relation queries the response was YES. [2023-11-29 04:13:02,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61768 conditions, 33582 events. 19922/33582 cut-off events. For 988/988 co-relation queries the response was YES. Maximal size of possible extension queue 1539. Compared 293961 event pairs, 14160 based on Foata normal form. 0/24075 useless extension candidates. Maximal degree in co-relation 61725. Up to 22779 conditions per place. [2023-11-29 04:13:03,059 INFO L140 encePairwiseOnDemand]: 95/109 looper letters, 140 selfloop transitions, 122 changer transitions 0/288 dead transitions. [2023-11-29 04:13:03,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 288 transitions, 3371 flow [2023-11-29 04:13:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 04:13:03,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 04:13:03,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 992 transitions. [2023-11-29 04:13:03,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056065239551478 [2023-11-29 04:13:03,062 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 992 transitions. [2023-11-29 04:13:03,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 992 transitions. [2023-11-29 04:13:03,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:03,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 992 transitions. [2023-11-29 04:13:03,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 55.111111111111114) internal successors, (992), 18 states have internal predecessors, (992), 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) [2023-11-29 04:13:03,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 109.0) internal successors, (2071), 19 states have internal predecessors, (2071), 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) [2023-11-29 04:13:03,067 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 109.0) internal successors, (2071), 19 states have internal predecessors, (2071), 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) [2023-11-29 04:13:03,067 INFO L175 Difference]: Start difference. First operand has 198 places, 227 transitions, 2628 flow. Second operand 18 states and 992 transitions. [2023-11-29 04:13:03,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 288 transitions, 3371 flow [2023-11-29 04:13:03,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 288 transitions, 3370 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:13:03,084 INFO L231 Difference]: Finished difference. Result has 216 places, 227 transitions, 2916 flow [2023-11-29 04:13:03,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=2625, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2916, PETRI_PLACES=216, PETRI_TRANSITIONS=227} [2023-11-29 04:13:03,084 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 110 predicate places. [2023-11-29 04:13:03,085 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 227 transitions, 2916 flow [2023-11-29 04:13:03,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 49.61538461538461) internal successors, (645), 13 states have internal predecessors, (645), 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) [2023-11-29 04:13:03,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:03,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:03,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (17)] Forceful destruction successful, exit code 0 [2023-11-29 04:13:03,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:13:03,286 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:13:03,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:03,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1136287743, now seen corresponding path program 1 times [2023-11-29 04:13:03,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:13:03,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650087623] [2023-11-29 04:13:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:03,286 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 [2023-11-29 04:13:03,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:13:03,287 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:13:03,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (18)] Waiting until timeout for monitored process [2023-11-29 04:13:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:03,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:13:03,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:13:03,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:13:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:13:03,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:13:03,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650087623] [2023-11-29 04:13:03,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650087623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:13:03,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:13:03,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 04:13:03,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69948146] [2023-11-29 04:13:03,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:13:03,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:13:03,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:13:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:13:03,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:13:03,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 109 [2023-11-29 04:13:03,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 227 transitions, 2916 flow. Second operand has 10 states, 10 states have (on average 59.2) internal successors, (592), 10 states have internal predecessors, (592), 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) [2023-11-29 04:13:03,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:03,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 109 [2023-11-29 04:13:03,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:09,309 INFO L124 PetriNetUnfolderBase]: 18674/31625 cut-off events. [2023-11-29 04:13:09,309 INFO L125 PetriNetUnfolderBase]: For 1206/1224 co-relation queries the response was YES. [2023-11-29 04:13:09,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58526 conditions, 31625 events. 18674/31625 cut-off events. For 1206/1224 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 273466 event pairs, 12942 based on Foata normal form. 0/22362 useless extension candidates. Maximal degree in co-relation 58479. Up to 21029 conditions per place. [2023-11-29 04:13:09,609 INFO L140 encePairwiseOnDemand]: 96/109 looper letters, 166 selfloop transitions, 127 changer transitions 0/326 dead transitions. [2023-11-29 04:13:09,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 326 transitions, 3750 flow [2023-11-29 04:13:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:13:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:13:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 839 transitions. [2023-11-29 04:13:09,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6414373088685015 [2023-11-29 04:13:09,611 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 839 transitions. [2023-11-29 04:13:09,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 839 transitions. [2023-11-29 04:13:09,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:09,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 839 transitions. [2023-11-29 04:13:09,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 69.91666666666667) internal successors, (839), 12 states have internal predecessors, (839), 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) [2023-11-29 04:13:09,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 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) [2023-11-29 04:13:09,615 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 109.0) internal successors, (1417), 13 states have internal predecessors, (1417), 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) [2023-11-29 04:13:09,615 INFO L175 Difference]: Start difference. First operand has 216 places, 227 transitions, 2916 flow. Second operand 12 states and 839 transitions. [2023-11-29 04:13:09,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 326 transitions, 3750 flow [2023-11-29 04:13:09,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 326 transitions, 3544 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-11-29 04:13:09,633 INFO L231 Difference]: Finished difference. Result has 215 places, 231 transitions, 2985 flow [2023-11-29 04:13:09,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=2711, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2985, PETRI_PLACES=215, PETRI_TRANSITIONS=231} [2023-11-29 04:13:09,633 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 109 predicate places. [2023-11-29 04:13:09,634 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 231 transitions, 2985 flow [2023-11-29 04:13:09,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.2) internal successors, (592), 10 states have internal predecessors, (592), 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) [2023-11-29 04:13:09,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:09,634 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:09,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (18)] Forceful destruction successful, exit code 0 [2023-11-29 04:13:09,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:13:09,835 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:13:09,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:09,835 INFO L85 PathProgramCache]: Analyzing trace with hash -75759545, now seen corresponding path program 2 times [2023-11-29 04:13:09,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:13:09,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126584896] [2023-11-29 04:13:09,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:13:09,835 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 [2023-11-29 04:13:09,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:13:09,836 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:13:09,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (19)] Waiting until timeout for monitored process [2023-11-29 04:13:09,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:13:09,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:13:09,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:13:09,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:09,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:09,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:09,992 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 13 [2023-11-29 04:13:09,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-29 04:13:10,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,068 INFO L349 Elim1Store]: treesize reduction 19, result has 13.6 percent of original size [2023-11-29 04:13:10,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 11 [2023-11-29 04:13:10,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:13:10,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,116 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 13 [2023-11-29 04:13:10,119 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:13:10,120 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:13:10,546 INFO L349 Elim1Store]: treesize reduction 28, result has 45.1 percent of original size [2023-11-29 04:13:10,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 49 [2023-11-29 04:13:10,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:13:10,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,780 INFO L349 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2023-11-29 04:13:10,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 59 [2023-11-29 04:13:10,800 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:13:10,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 04:13:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:13:11,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:13:11,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:13:11,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126584896] [2023-11-29 04:13:11,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126584896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:11,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:11,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:13:11,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253409532] [2023-11-29 04:13:11,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:11,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:13:11,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:13:11,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:13:11,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:13:13,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 109 [2023-11-29 04:13:13,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 231 transitions, 2985 flow. Second operand has 5 states, 5 states have (on average 54.8) internal successors, (274), 5 states have internal predecessors, (274), 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) [2023-11-29 04:13:13,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:13,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 109 [2023-11-29 04:13:13,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:18,081 INFO L124 PetriNetUnfolderBase]: 16958/29186 cut-off events. [2023-11-29 04:13:18,081 INFO L125 PetriNetUnfolderBase]: For 3769/3871 co-relation queries the response was YES. [2023-11-29 04:13:18,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56553 conditions, 29186 events. 16958/29186 cut-off events. For 3769/3871 co-relation queries the response was YES. Maximal size of possible extension queue 1482. Compared 252355 event pairs, 12438 based on Foata normal form. 3/21034 useless extension candidates. Maximal degree in co-relation 56503. Up to 22547 conditions per place. [2023-11-29 04:13:18,434 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 162 selfloop transitions, 35 changer transitions 0/230 dead transitions. [2023-11-29 04:13:18,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 230 transitions, 3373 flow [2023-11-29 04:13:18,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:13:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:13:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 307 transitions. [2023-11-29 04:13:18,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563302752293578 [2023-11-29 04:13:18,437 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 307 transitions. [2023-11-29 04:13:18,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 307 transitions. [2023-11-29 04:13:18,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:18,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 307 transitions. [2023-11-29 04:13:18,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 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) [2023-11-29 04:13:18,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2023-11-29 04:13:18,439 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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) [2023-11-29 04:13:18,439 INFO L175 Difference]: Start difference. First operand has 215 places, 231 transitions, 2985 flow. Second operand 5 states and 307 transitions. [2023-11-29 04:13:18,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 230 transitions, 3373 flow [2023-11-29 04:13:18,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 230 transitions, 3233 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 04:13:18,464 INFO L231 Difference]: Finished difference. Result has 210 places, 230 transitions, 2909 flow [2023-11-29 04:13:18,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=2839, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2909, PETRI_PLACES=210, PETRI_TRANSITIONS=230} [2023-11-29 04:13:18,464 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 104 predicate places. [2023-11-29 04:13:18,464 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 230 transitions, 2909 flow [2023-11-29 04:13:18,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.8) internal successors, (274), 5 states have internal predecessors, (274), 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) [2023-11-29 04:13:18,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:18,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:18,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (19)] Forceful destruction successful, exit code 0 [2023-11-29 04:13:18,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:13:18,665 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:13:18,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:18,666 INFO L85 PathProgramCache]: Analyzing trace with hash 951065961, now seen corresponding path program 1 times [2023-11-29 04:13:18,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:13:18,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748496562] [2023-11-29 04:13:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:18,666 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 [2023-11-29 04:13:18,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:13:18,667 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:13:18,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (20)] Waiting until timeout for monitored process [2023-11-29 04:13:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:18,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:13:18,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:18,878 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-11-29 04:13:18,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:13:18,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:18,888 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 [2023-11-29 04:13:18,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:18,899 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 [2023-11-29 04:13:18,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:18,918 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 [2023-11-29 04:13:18,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:18,930 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 [2023-11-29 04:13:18,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:18,941 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 16 treesize of output 1 [2023-11-29 04:13:18,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:18,949 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 [2023-11-29 04:13:18,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:18,960 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 [2023-11-29 04:13:18,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:18,969 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 [2023-11-29 04:13:18,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:18,976 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 [2023-11-29 04:13:18,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:18,989 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 [2023-11-29 04:13:18,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:18,995 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 [2023-11-29 04:13:19,020 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-11-29 04:13:19,021 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 20 treesize of output 21 [2023-11-29 04:13:19,069 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-29 04:13:19,070 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 21 treesize of output 31 [2023-11-29 04:13:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:13:19,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:13:19,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:13:19,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748496562] [2023-11-29 04:13:19,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748496562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:19,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:19,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:13:19,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662290280] [2023-11-29 04:13:19,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:19,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:13:19,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:13:19,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:13:19,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:13:19,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 109 [2023-11-29 04:13:19,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 230 transitions, 2909 flow. Second operand has 7 states, 7 states have (on average 52.714285714285715) internal successors, (369), 7 states have internal predecessors, (369), 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) [2023-11-29 04:13:19,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:19,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 109 [2023-11-29 04:13:19,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:25,180 INFO L124 PetriNetUnfolderBase]: 22397/36977 cut-off events. [2023-11-29 04:13:25,180 INFO L125 PetriNetUnfolderBase]: For 3895/3991 co-relation queries the response was YES. [2023-11-29 04:13:25,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72342 conditions, 36977 events. 22397/36977 cut-off events. For 3895/3991 co-relation queries the response was YES. Maximal size of possible extension queue 1750. Compared 312944 event pairs, 17238 based on Foata normal form. 0/27859 useless extension candidates. Maximal degree in co-relation 72293. Up to 30354 conditions per place. [2023-11-29 04:13:25,534 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 201 selfloop transitions, 1 changer transitions 0/228 dead transitions. [2023-11-29 04:13:25,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 228 transitions, 3309 flow [2023-11-29 04:13:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:13:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:13:25,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2023-11-29 04:13:25,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6207951070336392 [2023-11-29 04:13:25,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 203 transitions. [2023-11-29 04:13:25,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 203 transitions. [2023-11-29 04:13:25,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:25,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 203 transitions. [2023-11-29 04:13:25,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2023-11-29 04:13:25,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-11-29 04:13:25,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2023-11-29 04:13:25,538 INFO L175 Difference]: Start difference. First operand has 210 places, 230 transitions, 2909 flow. Second operand 3 states and 203 transitions. [2023-11-29 04:13:25,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 228 transitions, 3309 flow [2023-11-29 04:13:25,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 228 transitions, 3263 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:13:25,563 INFO L231 Difference]: Finished difference. Result has 207 places, 228 transitions, 2861 flow [2023-11-29 04:13:25,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=2859, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2861, PETRI_PLACES=207, PETRI_TRANSITIONS=228} [2023-11-29 04:13:25,564 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 101 predicate places. [2023-11-29 04:13:25,564 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 228 transitions, 2861 flow [2023-11-29 04:13:25,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.714285714285715) internal successors, (369), 7 states have internal predecessors, (369), 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) [2023-11-29 04:13:25,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:25,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:25,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (20)] Forceful destruction successful, exit code 0 [2023-11-29 04:13:25,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:13:25,765 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 64 more)] === [2023-11-29 04:13:25,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:25,765 INFO L85 PathProgramCache]: Analyzing trace with hash 951065962, now seen corresponding path program 1 times [2023-11-29 04:13:25,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:13:25,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784326484] [2023-11-29 04:13:25,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:25,766 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 [2023-11-29 04:13:25,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:13:25,766 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:13:25,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8eedd66-c9ce-4951-8313-de44bd5bca73/bin/uautomizer-verify-BQ2R08f2Ya/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 (21)] Waiting until timeout for monitored process [2023-11-29 04:13:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:25,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:13:25,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:25,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:25,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-29 04:13:26,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 04:13:26,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-29 04:13:26,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,047 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 13 [2023-11-29 04:13:26,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 04:13:26,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,091 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 [2023-11-29 04:13:26,106 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 13 [2023-11-29 04:13:26,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,129 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 13 [2023-11-29 04:13:26,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 04:13:26,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,160 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 13 [2023-11-29 04:13:26,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-29 04:13:26,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 04:13:26,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-29 04:13:26,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,237 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 13 [2023-11-29 04:13:26,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 04:13:26,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,278 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 13 [2023-11-29 04:13:26,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-29 04:13:26,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:26,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-29 04:13:26,676 INFO L349 Elim1Store]: treesize reduction 40, result has 54.5 percent of original size [2023-11-29 04:13:26,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 82 [2023-11-29 04:13:33,410 WARN L293 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 378 DAG size of output: 331 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 04:13:33,410 INFO L349 Elim1Store]: treesize reduction 160, result has 79.5 percent of original size [2023-11-29 04:13:33,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 161 treesize of output 742