./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.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_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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_18169af0-9a3f-40e8-84ee-911738105c76/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 aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:19:58,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:19:58,838 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 00:19:58,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:19:58,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:19:58,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:19:58,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:19:58,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:19:58,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:19:58,872 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:19:58,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:19:58,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:19:58,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:19:58,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:19:58,875 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:19:58,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:19:58,876 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:19:58,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:19:58,877 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:19:58,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:19:58,878 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:19:58,878 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:19:58,879 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:19:58,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:19:58,879 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:19:58,880 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:19:58,880 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:19:58,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:19:58,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:19:58,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:19:58,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:19:58,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:19:58,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:19:58,884 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:19:58,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:19:58,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:19:58,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:19:58,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:19:58,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:19:58,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:19:58,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:19:58,886 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_18169af0-9a3f-40e8-84ee-911738105c76/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 [2023-11-29 00:19:59,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:19:59,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:19:59,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:19:59,128 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:19:59,129 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:19:59,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2023-11-29 00:20:01,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:20:01,992 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:20:01,993 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2023-11-29 00:20:02,001 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/data/e79abb3f1/2952127259ca4f2e8dd89e7cab8a50ad/FLAG279e55c8e [2023-11-29 00:20:02,013 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/data/e79abb3f1/2952127259ca4f2e8dd89e7cab8a50ad [2023-11-29 00:20:02,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:20:02,016 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:20:02,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:20:02,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:20:02,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:20:02,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:20:02" (1/1) ... [2023-11-29 00:20:02,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c8c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:02, skipping insertion in model container [2023-11-29 00:20:02,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:20:02" (1/1) ... [2023-11-29 00:20:02,049 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:20:02,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:20:02,231 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 00:20:02,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@46679682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:02, skipping insertion in model container [2023-11-29 00:20:02,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:20:02,232 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 00:20:02,233 INFO L158 Benchmark]: Toolchain (without parser) took 216.37ms. Allocated memory is still 169.9MB. Free memory was 121.8MB in the beginning and 111.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:20:02,234 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 142.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:20:02,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.69ms. Allocated memory is still 169.9MB. Free memory was 121.6MB in the beginning and 111.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:20:02,236 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 142.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.69ms. Allocated memory is still 169.9MB. Free memory was 121.6MB in the beginning and 111.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 175]: 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_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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_18169af0-9a3f-40e8-84ee-911738105c76/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 aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:20:03,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:20:03,972 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 00:20:03,986 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:20:03,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:20:04,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:20:04,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:20:04,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:20:04,015 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:20:04,016 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:20:04,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:20:04,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:20:04,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:20:04,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:20:04,019 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:20:04,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:20:04,020 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:20:04,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:20:04,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:20:04,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:20:04,022 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:20:04,022 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:20:04,023 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:20:04,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:20:04,024 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:20:04,024 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:20:04,024 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:20:04,025 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:20:04,025 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:20:04,025 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:20:04,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:20:04,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:20:04,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:20:04,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:20:04,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:20:04,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:20:04,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:20:04,028 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:20:04,028 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:20:04,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:20:04,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:20:04,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:20:04,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:20:04,029 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:20:04,029 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_18169af0-9a3f-40e8-84ee-911738105c76/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 [2023-11-29 00:20:04,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:20:04,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:20:04,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:20:04,315 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:20:04,316 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:20:04,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2023-11-29 00:20:07,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:20:07,283 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:20:07,284 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2023-11-29 00:20:07,295 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/data/f66e6fc34/614d6161a97f44a3b5a00943c39c54f1/FLAGf29f0e6ac [2023-11-29 00:20:07,308 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/data/f66e6fc34/614d6161a97f44a3b5a00943c39c54f1 [2023-11-29 00:20:07,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:20:07,312 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:20:07,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:20:07,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:20:07,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:20:07,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07, skipping insertion in model container [2023-11-29 00:20:07,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,344 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:20:07,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:20:07,539 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 00:20:07,544 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:20:07,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:20:07,579 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:20:07,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:20:07,638 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:20:07,638 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:20:07,644 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:20:07,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07 WrapperNode [2023-11-29 00:20:07,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:20:07,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:20:07,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:20:07,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:20:07,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,697 INFO L138 Inliner]: procedures = 31, calls = 89, calls flagged for inlining = 23, calls inlined = 33, statements flattened = 392 [2023-11-29 00:20:07,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:20:07,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:20:07,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:20:07,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:20:07,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,743 INFO L175 MemorySlicer]: Split 19 memory accesses to 8 slices as follows [2, 2, 2, 2, 5, 2, 2, 2]. 26 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1]. [2023-11-29 00:20:07,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:20:07,784 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:20:07,784 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:20:07,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:20:07,785 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (1/1) ... [2023-11-29 00:20:07,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:20:07,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:20:07,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:20:07,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:20:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:20:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:20:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 00:20:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 00:20:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 00:20:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 00:20:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-11-29 00:20:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-11-29 00:20:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2023-11-29 00:20:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:20:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 00:20:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 00:20:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 00:20:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 00:20:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 00:20:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-11-29 00:20:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-11-29 00:20:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2023-11-29 00:20:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:20:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:20:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:20:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:20:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 00:20:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 00:20:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 00:20:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 00:20:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-29 00:20:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-29 00:20:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-29 00:20:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-29 00:20:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 00:20:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 00:20:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:20:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:20:07,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:20:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:20:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 00:20:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 00:20:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 00:20:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 00:20:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 00:20:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-11-29 00:20:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-11-29 00:20:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7 [2023-11-29 00:20:07,863 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 00:20:08,022 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:20:08,024 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:20:08,772 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:20:09,212 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:20:09,212 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 00:20:09,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:20:09 BoogieIcfgContainer [2023-11-29 00:20:09,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:20:09,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:20:09,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:20:09,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:20:09,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:20:07" (1/3) ... [2023-11-29 00:20:09,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b6dbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:20:09, skipping insertion in model container [2023-11-29 00:20:09,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:20:07" (2/3) ... [2023-11-29 00:20:09,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b6dbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:20:09, skipping insertion in model container [2023-11-29 00:20:09,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:20:09" (3/3) ... [2023-11-29 00:20:09,231 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2023-11-29 00:20:09,250 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:20:09,251 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-29 00:20:09,251 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:20:09,399 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-29 00:20:09,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 144 transitions, 354 flow [2023-11-29 00:20:09,501 INFO L124 PetriNetUnfolderBase]: 13/120 cut-off events. [2023-11-29 00:20:09,501 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 00:20:09,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 120 events. 13/120 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 373 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 117. Up to 3 conditions per place. [2023-11-29 00:20:09,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 144 transitions, 354 flow [2023-11-29 00:20:09,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 119 transitions, 286 flow [2023-11-29 00:20:09,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:20:09,529 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;@3104bdbb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:20:09,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2023-11-29 00:20:09,533 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:20:09,533 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-29 00:20:09,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:20:09,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:20:09,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:20:09,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-29 00:20:09,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:20:09,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1118653, now seen corresponding path program 1 times [2023-11-29 00:20:09,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:20:09,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756176695] [2023-11-29 00:20:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:20:09,552 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 00:20:09,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:20:09,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:20:09,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:20:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:09,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:20:09,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:20:09,801 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 00:20:09,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:09,816 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 00:20:09,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:09,824 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 00:20:09,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:09,833 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 00:20:09,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:09,852 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 00:20:09,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:09,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:20:09,870 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 00:20:09,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:20:09,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:20:09,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756176695] [2023-11-29 00:20:09,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756176695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:20:09,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:20:09,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:20:09,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367545841] [2023-11-29 00:20:09,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:20:09,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:20:09,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:20:09,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:20:09,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:20:10,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-11-29 00:20:10,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 119 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 00:20:10,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:20:10,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-11-29 00:20:10,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:20:36,389 INFO L124 PetriNetUnfolderBase]: 239352/314064 cut-off events. [2023-11-29 00:20:36,389 INFO L125 PetriNetUnfolderBase]: For 23545/25983 co-relation queries the response was YES. [2023-11-29 00:20:37,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626952 conditions, 314064 events. 239352/314064 cut-off events. For 23545/25983 co-relation queries the response was YES. Maximal size of possible extension queue 14703. Compared 2189869 event pairs, 189332 based on Foata normal form. 43680/251904 useless extension candidates. Maximal degree in co-relation 624944. Up to 289611 conditions per place. [2023-11-29 00:20:38,946 INFO L140 encePairwiseOnDemand]: 140/148 looper letters, 61 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-11-29 00:20:38,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 112 transitions, 398 flow [2023-11-29 00:20:38,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:20:38,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:20:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-11-29 00:20:38,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878378378378378 [2023-11-29 00:20:38,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-11-29 00:20:38,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-11-29 00:20:38,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:20:38,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-11-29 00:20:38,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 00:20:38,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 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 00:20:38,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 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 00:20:38,971 INFO L175 Difference]: Start difference. First operand has 125 places, 119 transitions, 286 flow. Second operand 3 states and 261 transitions. [2023-11-29 00:20:38,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 112 transitions, 398 flow [2023-11-29 00:20:40,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 366 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-29 00:20:40,243 INFO L231 Difference]: Finished difference. Result has 112 places, 112 transitions, 244 flow [2023-11-29 00:20:40,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=112, PETRI_TRANSITIONS=112} [2023-11-29 00:20:40,248 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, -13 predicate places. [2023-11-29 00:20:40,248 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 112 transitions, 244 flow [2023-11-29 00:20:40,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 00:20:40,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:20:40,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:20:40,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:20:40,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:20:40,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-29 00:20:40,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:20:40,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1118654, now seen corresponding path program 1 times [2023-11-29 00:20:40,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:20:40,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063311421] [2023-11-29 00:20:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:20:40,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:20:40,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:20:40,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:20:40,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:20:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:40,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:20:40,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:20:40,597 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 00:20:40,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:40,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 00:20:40,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:40,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 00:20:40,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:40,631 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 00:20:40,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:40,646 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 00:20:40,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:40,665 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 00:20:40,742 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 00:20:40,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:20:40,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:20:40,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063311421] [2023-11-29 00:20:40,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063311421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:20:40,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:20:40,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:20:40,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649572449] [2023-11-29 00:20:40,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:20:40,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:20:40,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:20:40,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:20:40,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:20:41,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-11-29 00:20:41,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 112 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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 00:20:41,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:20:41,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-11-29 00:20:41,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:21:03,680 INFO L124 PetriNetUnfolderBase]: 239353/314067 cut-off events. [2023-11-29 00:21:03,680 INFO L125 PetriNetUnfolderBase]: For 5655/8093 co-relation queries the response was YES. [2023-11-29 00:21:04,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609529 conditions, 314067 events. 239353/314067 cut-off events. For 5655/8093 co-relation queries the response was YES. Maximal size of possible extension queue 14703. Compared 2190064 event pairs, 189332 based on Foata normal form. 0/208227 useless extension candidates. Maximal degree in co-relation 609507. Up to 289616 conditions per place. [2023-11-29 00:21:05,983 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 63 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2023-11-29 00:21:05,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 115 transitions, 386 flow [2023-11-29 00:21:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:21:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:21:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2023-11-29 00:21:05,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5472972972972973 [2023-11-29 00:21:05,986 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 324 transitions. [2023-11-29 00:21:05,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 324 transitions. [2023-11-29 00:21:05,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:21:05,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 324 transitions. [2023-11-29 00:21:05,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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 00:21:05,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 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 00:21:05,992 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 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 00:21:05,992 INFO L175 Difference]: Start difference. First operand has 112 places, 112 transitions, 244 flow. Second operand 4 states and 324 transitions. [2023-11-29 00:21:05,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 115 transitions, 386 flow [2023-11-29 00:21:05,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 115 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:21:05,996 INFO L231 Difference]: Finished difference. Result has 115 places, 115 transitions, 267 flow [2023-11-29 00:21:05,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2023-11-29 00:21:05,997 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, -10 predicate places. [2023-11-29 00:21:05,997 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 267 flow [2023-11-29 00:21:05,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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 00:21:05,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:21:05,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:21:06,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:21:06,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:21:06,198 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-29 00:21:06,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1118702, now seen corresponding path program 1 times [2023-11-29 00:21:06,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:06,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740660917] [2023-11-29 00:21:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:06,200 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 00:21:06,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:06,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:21:06,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:21:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:06,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:21:06,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:06,328 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-29 00:21:06,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-29 00:21:06,351 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:21:06,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-29 00:21:06,434 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 00:21:06,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:06,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:06,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740660917] [2023-11-29 00:21:06,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740660917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:06,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:06,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:21:06,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242070076] [2023-11-29 00:21:06,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:06,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:21:06,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:06,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:21:06,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:06,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 148 [2023-11-29 00:21:06,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 115 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:06,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:21:06,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 148 [2023-11-29 00:21:06,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:21:42,739 INFO L124 PetriNetUnfolderBase]: 372751/485426 cut-off events. [2023-11-29 00:21:42,740 INFO L125 PetriNetUnfolderBase]: For 8513/12170 co-relation queries the response was YES. [2023-11-29 00:21:43,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942876 conditions, 485426 events. 372751/485426 cut-off events. For 8513/12170 co-relation queries the response was YES. Maximal size of possible extension queue 21561. Compared 3442027 event pairs, 294056 based on Foata normal form. 0/325883 useless extension candidates. Maximal degree in co-relation 942852. Up to 443217 conditions per place. [2023-11-29 00:21:46,372 INFO L140 encePairwiseOnDemand]: 142/148 looper letters, 124 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2023-11-29 00:21:46,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 173 transitions, 654 flow [2023-11-29 00:21:46,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:21:46,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:21:46,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-11-29 00:21:46,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2023-11-29 00:21:46,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-11-29 00:21:46,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-11-29 00:21:46,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:21:46,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-11-29 00:21:46,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 00:21:46,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 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 00:21:46,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 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 00:21:46,380 INFO L175 Difference]: Start difference. First operand has 115 places, 115 transitions, 267 flow. Second operand 3 states and 310 transitions. [2023-11-29 00:21:46,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 173 transitions, 654 flow [2023-11-29 00:21:46,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 173 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:21:46,385 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 292 flow [2023-11-29 00:21:46,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2023-11-29 00:21:46,387 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, -8 predicate places. [2023-11-29 00:21:46,387 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 292 flow [2023-11-29 00:21:46,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:46,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:21:46,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:21:46,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:21:46,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:21:46,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-29 00:21:46,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:46,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1118703, now seen corresponding path program 1 times [2023-11-29 00:21:46,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:46,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953475595] [2023-11-29 00:21:46,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:46,591 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 00:21:46,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:46,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:21:46,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:21:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:46,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:21:46,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:46,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:21:46,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 00:21:46,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:21:46,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 00:21:46,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:21:46,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:21:46,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 00:21:46,779 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 00:21:46,827 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 00:21:46,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:46,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:46,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953475595] [2023-11-29 00:21:46,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953475595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:46,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:46,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:21:46,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202532102] [2023-11-29 00:21:46,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:46,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:21:46,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:46,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:21:46,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:47,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-11-29 00:21:47,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 00:21:47,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:21:47,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-11-29 00:21:47,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:22:09,370 INFO L124 PetriNetUnfolderBase]: 240610/316994 cut-off events. [2023-11-29 00:22:09,370 INFO L125 PetriNetUnfolderBase]: For 6803/9242 co-relation queries the response was YES. [2023-11-29 00:22:10,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617092 conditions, 316994 events. 240610/316994 cut-off events. For 6803/9242 co-relation queries the response was YES. Maximal size of possible extension queue 14714. Compared 2224122 event pairs, 190345 based on Foata normal form. 24899/235032 useless extension candidates. Maximal degree in co-relation 617068. Up to 291348 conditions per place. [2023-11-29 00:22:11,672 INFO L140 encePairwiseOnDemand]: 145/148 looper letters, 67 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2023-11-29 00:22:11,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 115 transitions, 424 flow [2023-11-29 00:22:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:22:11,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:22:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-11-29 00:22:11,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5720720720720721 [2023-11-29 00:22:11,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-11-29 00:22:11,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-11-29 00:22:11,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:22:11,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-11-29 00:22:11,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 00:22:11,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 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 00:22:11,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 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 00:22:11,677 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 292 flow. Second operand 3 states and 254 transitions. [2023-11-29 00:22:11,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 115 transitions, 424 flow [2023-11-29 00:22:11,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 115 transitions, 416 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:22:11,704 INFO L231 Difference]: Finished difference. Result has 115 places, 115 transitions, 282 flow [2023-11-29 00:22:11,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2023-11-29 00:22:11,705 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, -10 predicate places. [2023-11-29 00:22:11,705 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 282 flow [2023-11-29 00:22:11,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 00:22:11,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:22:11,705 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-29 00:22:11,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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)] Ended with exit code 0 [2023-11-29 00:22:11,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:22:11,906 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-29 00:22:11,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:11,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1075064984, now seen corresponding path program 1 times [2023-11-29 00:22:11,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:11,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994632387] [2023-11-29 00:22:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:11,907 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 00:22:11,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:11,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:22:11,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:22:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:11,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:22:11,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:12,004 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 00:22:12,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:22:12,016 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 00:22:12,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:22:12,037 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 00:22:12,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:22:12,049 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 00:22:12,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:22:12,060 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 00:22:12,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:22:12,066 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 00:22:12,206 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 00:22:12,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:12,551 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 00:22:12,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:12,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994632387] [2023-11-29 00:22:12,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994632387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:12,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:12,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 00:22:12,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313528289] [2023-11-29 00:22:12,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:12,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:22:12,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:12,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:22:12,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:22:14,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-11-29 00:22:14,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 115 transitions, 282 flow. Second operand has 10 states, 10 states have (on average 65.0) internal successors, (650), 10 states have internal predecessors, (650), 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 00:22:14,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:22:14,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-11-29 00:22:14,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:22:37,221 INFO L124 PetriNetUnfolderBase]: 240613/317003 cut-off events. [2023-11-29 00:22:37,221 INFO L125 PetriNetUnfolderBase]: For 5850/8289 co-relation queries the response was YES. [2023-11-29 00:22:38,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615860 conditions, 317003 events. 240613/317003 cut-off events. For 5850/8289 co-relation queries the response was YES. Maximal size of possible extension queue 14714. Compared 2224341 event pairs, 190345 based on Foata normal form. 0/209825 useless extension candidates. Maximal degree in co-relation 615849. Up to 291351 conditions per place. [2023-11-29 00:22:39,558 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 65 selfloop transitions, 13 changer transitions 0/124 dead transitions. [2023-11-29 00:22:39,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 124 transitions, 474 flow [2023-11-29 00:22:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:22:39,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:22:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 719 transitions. [2023-11-29 00:22:39,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858108108108108 [2023-11-29 00:22:39,563 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 719 transitions. [2023-11-29 00:22:39,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 719 transitions. [2023-11-29 00:22:39,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:22:39,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 719 transitions. [2023-11-29 00:22:39,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.9) internal successors, (719), 10 states have internal predecessors, (719), 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 00:22:39,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 148.0) internal successors, (1628), 11 states have internal predecessors, (1628), 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 00:22:39,571 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 148.0) internal successors, (1628), 11 states have internal predecessors, (1628), 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 00:22:39,571 INFO L175 Difference]: Start difference. First operand has 115 places, 115 transitions, 282 flow. Second operand 10 states and 719 transitions. [2023-11-29 00:22:39,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 124 transitions, 474 flow [2023-11-29 00:22:39,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 124 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:22:39,578 INFO L231 Difference]: Finished difference. Result has 126 places, 124 transitions, 361 flow [2023-11-29 00:22:39,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=361, PETRI_PLACES=126, PETRI_TRANSITIONS=124} [2023-11-29 00:22:39,580 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 1 predicate places. [2023-11-29 00:22:39,580 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 124 transitions, 361 flow [2023-11-29 00:22:39,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.0) internal successors, (650), 10 states have internal predecessors, (650), 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 00:22:39,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:22:39,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:22:39,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:22:39,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:22:39,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-29 00:22:39,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:39,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1031252267, now seen corresponding path program 1 times [2023-11-29 00:22:39,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:39,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205555936] [2023-11-29 00:22:39,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:39,783 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 00:22:39,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:39,784 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:22:39,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18169af0-9a3f-40e8-84ee-911738105c76/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 00:22:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:39,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:22:39,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:39,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:22:39,913 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 11 treesize of output 5 [2023-11-29 00:22:39,918 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 00:22:39,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:22:39,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:22:39,941 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 00:22:39,945 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:22:39,973 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 00:22:39,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:39,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:39,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205555936] [2023-11-29 00:22:39,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205555936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:39,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:39,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:22:39,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533551268] [2023-11-29 00:22:39,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:39,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:22:39,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:39,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:22:39,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:22:40,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-11-29 00:22:40,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 124 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 00:22:40,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:22:40,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-11-29 00:22:40,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand