./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.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_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:48:33,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:48:33,623 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 05:48:33,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:48:33,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:48:33,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:48:33,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:48:33,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:48:33,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:48:33,657 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:48:33,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:48:33,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:48:33,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:48:33,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:48:33,660 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:48:33,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:48:33,661 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:48:33,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:48:33,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:48:33,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:48:33,663 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 05:48:33,664 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 05:48:33,664 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 05:48:33,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:48:33,665 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 05:48:33,666 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:48:33,666 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:48:33,667 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:48:33,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:48:33,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:48:33,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:48:33,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:48:33,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:48:33,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:48:33,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:48:33,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:48:33,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:48:33,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:48:33,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:48:33,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:48:33,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:48:33,672 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_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2023-11-29 05:48:33,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:48:33,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:48:33,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:48:33,917 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:48:33,918 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:48:33,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2023-11-29 05:48:36,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:48:36,903 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:48:36,904 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2023-11-29 05:48:36,914 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/data/6ef392dd1/a7cf46e57d0f447ea2d945aa869c93e2/FLAG1ab506320 [2023-11-29 05:48:36,930 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/data/6ef392dd1/a7cf46e57d0f447ea2d945aa869c93e2 [2023-11-29 05:48:36,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:48:36,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:48:36,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:48:36,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:48:36,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:48:36,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:48:36" (1/1) ... [2023-11-29 05:48:36,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c99f0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:36, skipping insertion in model container [2023-11-29 05:48:36,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:48:36" (1/1) ... [2023-11-29 05:48:36,975 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:48:37,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:48:37,192 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 05:48:37,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b8071dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:37, skipping insertion in model container [2023-11-29 05:48:37,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:48:37,193 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 05:48:37,195 INFO L158 Benchmark]: Toolchain (without parser) took 260.30ms. Allocated memory is still 213.9MB. Free memory was 173.6MB in the beginning and 163.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 05:48:37,196 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:48:37,197 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.72ms. Allocated memory is still 213.9MB. Free memory was 173.6MB in the beginning and 163.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 05:48:37,198 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.72ms. Allocated memory is still 213.9MB. Free memory was 173.6MB in the beginning and 163.1MB 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: 151]: 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_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:48:38,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:48:39,051 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 05:48:39,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:48:39,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:48:39,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:48:39,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:48:39,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:48:39,095 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:48:39,095 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:48:39,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:48:39,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:48:39,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:48:39,098 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:48:39,098 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:48:39,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:48:39,099 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:48:39,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:48:39,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:48:39,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:48:39,101 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 05:48:39,102 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 05:48:39,102 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 05:48:39,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:48:39,103 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 05:48:39,103 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 05:48:39,104 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 05:48:39,104 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:48:39,104 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:48:39,105 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:48:39,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:48:39,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:48:39,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:48:39,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:48:39,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:48:39,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:48:39,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:48:39,107 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 05:48:39,108 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 05:48:39,108 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:48:39,108 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:48:39,108 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:48:39,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:48:39,109 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 05:48:39,109 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_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2023-11-29 05:48:39,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:48:39,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:48:39,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:48:39,424 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:48:39,424 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:48:39,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2023-11-29 05:48:42,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:48:42,404 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:48:42,405 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2023-11-29 05:48:42,415 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/data/ae30de319/940921d67d064df991b3a0ebf433e7cd/FLAG237b13c01 [2023-11-29 05:48:42,430 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/data/ae30de319/940921d67d064df991b3a0ebf433e7cd [2023-11-29 05:48:42,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:48:42,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:48:42,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:48:42,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:48:42,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:48:42,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec88393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42, skipping insertion in model container [2023-11-29 05:48:42,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:48:42,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:48:42,702 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 05:48:42,708 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:48:42,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:48:42,741 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:48:42,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:48:42,813 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:48:42,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42 WrapperNode [2023-11-29 05:48:42,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:48:42,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:48:42,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:48:42,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:48:42,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,869 INFO L138 Inliner]: procedures = 28, calls = 45, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 302 [2023-11-29 05:48:42,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:48:42,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:48:42,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:48:42,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:48:42,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,888 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,909 INFO L175 MemorySlicer]: Split 12 memory accesses to 5 slices as follows [2, 2, 4, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-29 05:48:42,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,926 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,931 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:48:42,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:48:42,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:48:42,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:48:42,946 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (1/1) ... [2023-11-29 05:48:42,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:48:42,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:48:42,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:48:42,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 05:48:43,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 05:48:43,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 05:48:43,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:48:43,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:48:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:48:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 05:48:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 05:48:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 05:48:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 05:48:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 05:48:43,017 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 05:48:43,155 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:48:43,157 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:48:43,768 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:48:44,175 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:48:44,175 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 05:48:44,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:48:44 BoogieIcfgContainer [2023-11-29 05:48:44,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:48:44,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:48:44,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:48:44,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:48:44,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:48:42" (1/3) ... [2023-11-29 05:48:44,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317f3ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:48:44, skipping insertion in model container [2023-11-29 05:48:44,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:48:42" (2/3) ... [2023-11-29 05:48:44,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317f3ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:48:44, skipping insertion in model container [2023-11-29 05:48:44,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:48:44" (3/3) ... [2023-11-29 05:48:44,184 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-11-29 05:48:44,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:48:44,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-29 05:48:44,200 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:48:44,272 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 05:48:44,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 70 transitions, 161 flow [2023-11-29 05:48:44,347 INFO L124 PetriNetUnfolderBase]: 7/67 cut-off events. [2023-11-29 05:48:44,347 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:48:44,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 7/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-29 05:48:44,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 70 transitions, 161 flow [2023-11-29 05:48:44,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 66 transitions, 150 flow [2023-11-29 05:48:44,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:48:44,371 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;@437c4ef2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:48:44,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-29 05:48:44,374 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:48:44,374 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-29 05:48:44,374 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:48:44,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:44,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 05:48:44,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:48:44,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:44,379 INFO L85 PathProgramCache]: Analyzing trace with hash 901133, now seen corresponding path program 1 times [2023-11-29 05:48:44,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:48:44,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676193480] [2023-11-29 05:48:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:44,390 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 05:48:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:48:44,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:44,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:44,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:48:44,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:44,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2023-11-29 05:48:44,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,659 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 05:48:44,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,668 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 05:48:44,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,681 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 05:48:44,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,690 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 05:48:44,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,699 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 05:48:44,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,714 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 05:48:44,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,731 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 05:48:44,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:48:44,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,746 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 05:48:44,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,756 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 05:48:44,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,765 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 05:48:44,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,775 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 05:48:44,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,783 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 05:48:44,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,802 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 05:48:44,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,811 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 05:48:44,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,818 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 05:48:44,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,826 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 05:48:44,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:48:44,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,878 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 05:48:44,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,896 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 05:48:44,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:48:44,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,919 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 05:48:44,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:44,933 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 05:48:44,943 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 05:48:44,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:48:44,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:48:44,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676193480] [2023-11-29 05:48:44,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676193480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:48:44,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:48:44,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:48:44,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214965933] [2023-11-29 05:48:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:48:44,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:48:44,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:48:45,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:48:45,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:48:45,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:48:45,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 05:48:45,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:45,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:48:45,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:48:45,585 INFO L124 PetriNetUnfolderBase]: 792/1499 cut-off events. [2023-11-29 05:48:45,585 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-29 05:48:45,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 1499 events. 792/1499 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8858 event pairs, 608 based on Foata normal form. 184/1313 useless extension candidates. Maximal degree in co-relation 2465. Up to 1135 conditions per place. [2023-11-29 05:48:45,605 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 27 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-29 05:48:45,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 60 transitions, 196 flow [2023-11-29 05:48:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:48:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:48:45,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2023-11-29 05:48:45,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6619047619047619 [2023-11-29 05:48:45,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 139 transitions. [2023-11-29 05:48:45,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 139 transitions. [2023-11-29 05:48:45,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:48:45,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 139 transitions. [2023-11-29 05:48:45,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 05:48:45,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:45,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:45,634 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 150 flow. Second operand 3 states and 139 transitions. [2023-11-29 05:48:45,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 60 transitions, 196 flow [2023-11-29 05:48:45,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 05:48:45,643 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 130 flow [2023-11-29 05:48:45,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-11-29 05:48:45,649 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -7 predicate places. [2023-11-29 05:48:45,650 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 130 flow [2023-11-29 05:48:45,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 05:48:45,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:45,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 05:48:45,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:45,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:45,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:48:45,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:45,857 INFO L85 PathProgramCache]: Analyzing trace with hash 901134, now seen corresponding path program 1 times [2023-11-29 05:48:45,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:48:45,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371799544] [2023-11-29 05:48:45,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:45,859 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 05:48:45,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:48:45,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:45,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:45,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:48:45,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:45,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 05:48:45,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:45,999 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 05:48:46,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:48:46,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,016 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 05:48:46,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,029 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 05:48:46,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,045 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 05:48:46,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:48:46,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,100 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 05:48:46,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,120 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 05:48:46,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,129 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 05:48:46,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,150 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 05:48:46,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,160 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 05:48:46,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,185 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 05:48:46,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,204 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 05:48:46,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,214 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 05:48:46,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,220 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 05:48:46,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,230 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 05:48:46,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,246 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 05:48:46,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,267 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 05:48:46,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,277 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 05:48:46,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,285 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 05:48:46,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,293 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 05:48:46,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,303 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 05:48:46,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:46,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:48:46,335 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 05:48:46,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:48:46,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:48:46,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371799544] [2023-11-29 05:48:46,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371799544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:48:46,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:48:46,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:48:46,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768874611] [2023-11-29 05:48:46,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:48:46,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:48:46,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:48:46,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:48:46,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:48:46,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:48:46,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 05:48:46,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:46,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:48:46,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:48:46,842 INFO L124 PetriNetUnfolderBase]: 793/1502 cut-off events. [2023-11-29 05:48:46,842 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 05:48:46,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2680 conditions, 1502 events. 793/1502 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8840 event pairs, 608 based on Foata normal form. 0/1132 useless extension candidates. Maximal degree in co-relation 2658. Up to 1140 conditions per place. [2023-11-29 05:48:46,864 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 30 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-11-29 05:48:46,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 204 flow [2023-11-29 05:48:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:48:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:48:46,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2023-11-29 05:48:46,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6619047619047619 [2023-11-29 05:48:46,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 139 transitions. [2023-11-29 05:48:46,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 139 transitions. [2023-11-29 05:48:46,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:48:46,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 139 transitions. [2023-11-29 05:48:46,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 05:48:46,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:46,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:46,871 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 130 flow. Second operand 3 states and 139 transitions. [2023-11-29 05:48:46,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 204 flow [2023-11-29 05:48:46,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:48:46,874 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 145 flow [2023-11-29 05:48:46,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2023-11-29 05:48:46,876 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2023-11-29 05:48:46,876 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 145 flow [2023-11-29 05:48:46,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 05:48:46,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:46,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 05:48:46,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:47,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:47,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:48:47,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:47,078 INFO L85 PathProgramCache]: Analyzing trace with hash 901212, now seen corresponding path program 1 times [2023-11-29 05:48:47,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:48:47,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623874670] [2023-11-29 05:48:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:47,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:48:47,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:48:47,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:47,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:47,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:48:47,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:47,174 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 05:48:47,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:48:47,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:48:47,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623874670] [2023-11-29 05:48:47,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623874670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:48:47,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:48:47,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:48:47,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702608767] [2023-11-29 05:48:47,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:48:47,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:48:47,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:48:47,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:48:47,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:48:47,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:48:47,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 05:48:47,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:47,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:48:47,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:48:47,548 INFO L124 PetriNetUnfolderBase]: 792/1501 cut-off events. [2023-11-29 05:48:47,549 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 05:48:47,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 1501 events. 792/1501 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8833 event pairs, 608 based on Foata normal form. 1/1133 useless extension candidates. Maximal degree in co-relation 2668. Up to 1138 conditions per place. [2023-11-29 05:48:47,562 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 29 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-29 05:48:47,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 204 flow [2023-11-29 05:48:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:48:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:48:47,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2023-11-29 05:48:47,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 05:48:47,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2023-11-29 05:48:47,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2023-11-29 05:48:47,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:48:47,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2023-11-29 05:48:47,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 05:48:47,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:47,567 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:47,567 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 145 flow. Second operand 3 states and 140 transitions. [2023-11-29 05:48:47,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 204 flow [2023-11-29 05:48:47,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:48:47,570 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 142 flow [2023-11-29 05:48:47,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-11-29 05:48:47,571 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2023-11-29 05:48:47,571 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 142 flow [2023-11-29 05:48:47,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 05:48:47,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:47,571 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-29 05:48:47,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:47,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:47,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:48:47,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash 866019281, now seen corresponding path program 1 times [2023-11-29 05:48:47,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:48:47,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505289394] [2023-11-29 05:48:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:47,773 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 05:48:47,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:48:47,774 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:47,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:47,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:48:47,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:47,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 05:48:47,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:47,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:48:47,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:47,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:48:47,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:47,907 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 05:48:47,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:47,913 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 6 treesize of output 1 [2023-11-29 05:48:47,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:47,921 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 05:48:47,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:47,932 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 05:48:47,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:47,938 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 05:48:47,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:47,962 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 05:48:47,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:47,970 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 05:48:47,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:47,978 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 05:48:47,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:47,986 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 05:48:47,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:47,998 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 05:48:48,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:48,004 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 05:48:48,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:48,016 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 05:48:48,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:48,024 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 05:48:48,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:48,040 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 05:48:48,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:48,049 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 11 treesize of output 1 [2023-11-29 05:48:48,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:48,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:48:48,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:48,079 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 05:48:48,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:48,091 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 05:48:48,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:48,106 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 05:48:48,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:48,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:48:48,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:48,155 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 05:48:48,203 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 05:48:48,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:48:48,366 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 05:48:48,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:48:48,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505289394] [2023-11-29 05:48:48,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505289394] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:48:48,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:48:48,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-29 05:48:48,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292228297] [2023-11-29 05:48:48,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:48:48,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:48:48,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:48:48,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:48:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:48:49,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:48:49,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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 05:48:49,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:49,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:48:49,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:48:49,651 INFO L124 PetriNetUnfolderBase]: 794/1507 cut-off events. [2023-11-29 05:48:49,651 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-29 05:48:49,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1507 events. 794/1507 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8853 event pairs, 608 based on Foata normal form. 0/1137 useless extension candidates. Maximal degree in co-relation 2685. Up to 1141 conditions per place. [2023-11-29 05:48:49,660 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 32 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-11-29 05:48:49,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 240 flow [2023-11-29 05:48:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:48:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:48:49,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 215 transitions. [2023-11-29 05:48:49,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2023-11-29 05:48:49,663 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 215 transitions. [2023-11-29 05:48:49,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 215 transitions. [2023-11-29 05:48:49,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:48:49,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 215 transitions. [2023-11-29 05:48:49,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 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 05:48:49,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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 05:48:49,666 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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 05:48:49,666 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 142 flow. Second operand 5 states and 215 transitions. [2023-11-29 05:48:49,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 240 flow [2023-11-29 05:48:49,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:48:49,669 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 180 flow [2023-11-29 05:48:49,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2023-11-29 05:48:49,670 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2023-11-29 05:48:49,670 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 180 flow [2023-11-29 05:48:49,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 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 05:48:49,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:49,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:48:49,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:49,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:49,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:48:49,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:49,871 INFO L85 PathProgramCache]: Analyzing trace with hash 866019359, now seen corresponding path program 1 times [2023-11-29 05:48:49,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:48:49,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881331441] [2023-11-29 05:48:49,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:49,872 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 05:48:49,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:48:49,873 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:49,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:49,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:48:49,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:48:49,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:48:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:48:50,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:48:50,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881331441] [2023-11-29 05:48:50,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881331441] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:48:50,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:48:50,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 05:48:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900069549] [2023-11-29 05:48:50,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:48:50,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:48:50,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:48:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:48:50,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:48:50,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:48:50,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:50,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:50,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:48:50,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:48:50,477 INFO L124 PetriNetUnfolderBase]: 792/1505 cut-off events. [2023-11-29 05:48:50,477 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-29 05:48:50,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2702 conditions, 1505 events. 792/1505 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8773 event pairs, 608 based on Foata normal form. 2/1138 useless extension candidates. Maximal degree in co-relation 2675. Up to 1137 conditions per place. [2023-11-29 05:48:50,488 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 29 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-11-29 05:48:50,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 242 flow [2023-11-29 05:48:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:48:50,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:48:50,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 216 transitions. [2023-11-29 05:48:50,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171428571428571 [2023-11-29 05:48:50,489 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 216 transitions. [2023-11-29 05:48:50,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 216 transitions. [2023-11-29 05:48:50,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:48:50,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 216 transitions. [2023-11-29 05:48:50,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:50,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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 05:48:50,493 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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 05:48:50,493 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 180 flow. Second operand 5 states and 216 transitions. [2023-11-29 05:48:50,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 242 flow [2023-11-29 05:48:50,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 236 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 05:48:50,496 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 180 flow [2023-11-29 05:48:50,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2023-11-29 05:48:50,498 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2023-11-29 05:48:50,498 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 180 flow [2023-11-29 05:48:50,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:50,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:50,499 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1] [2023-11-29 05:48:50,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:50,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:50,702 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:48:50,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:50,702 INFO L85 PathProgramCache]: Analyzing trace with hash -314230505, now seen corresponding path program 2 times [2023-11-29 05:48:50,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:48:50,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48589281] [2023-11-29 05:48:50,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:48:50,703 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 05:48:50,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:48:50,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:50,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:50,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:48:50,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:48:50,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:48:50,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:50,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 05:48:50,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:48:50,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,855 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 05:48:50,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,861 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 05:48:50,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,871 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 05:48:50,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,887 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 05:48:50,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,909 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 05:48:50,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,917 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 05:48:50,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,926 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 05:48:50,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:48:50,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,941 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 05:48:50,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,947 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 05:48:50,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,968 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 05:48:50,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:50,979 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 05:48:51,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:51,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:48:51,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:51,030 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 05:48:51,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:51,049 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 05:48:51,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:51,058 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 05:48:51,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:51,068 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 05:48:51,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:51,077 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 05:48:51,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:51,098 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 05:48:51,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:51,108 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 05:48:51,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:51,117 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 05:48:51,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:51,123 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 05:48:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:48:51,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:48:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:48:51,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:48:51,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48589281] [2023-11-29 05:48:51,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48589281] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:48:51,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:48:51,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-29 05:48:51,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207306430] [2023-11-29 05:48:51,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:48:51,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:48:51,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:48:51,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:48:51,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:48:53,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:48:53,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 180 flow. Second operand has 11 states, 11 states have (on average 36.63636363636363) internal successors, (403), 11 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:53,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:53,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:48:53,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:48:54,412 INFO L124 PetriNetUnfolderBase]: 791/1502 cut-off events. [2023-11-29 05:48:54,412 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-29 05:48:54,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2698 conditions, 1502 events. 791/1502 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8776 event pairs, 608 based on Foata normal form. 1/1134 useless extension candidates. Maximal degree in co-relation 2670. Up to 1135 conditions per place. [2023-11-29 05:48:54,425 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 28 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2023-11-29 05:48:54,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 232 flow [2023-11-29 05:48:54,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:48:54,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:48:54,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 244 transitions. [2023-11-29 05:48:54,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2023-11-29 05:48:54,427 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 244 transitions. [2023-11-29 05:48:54,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 244 transitions. [2023-11-29 05:48:54,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:48:54,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 244 transitions. [2023-11-29 05:48:54,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.666666666666664) internal successors, (244), 6 states have internal predecessors, (244), 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 05:48:54,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:48:54,429 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:48:54,429 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 180 flow. Second operand 6 states and 244 transitions. [2023-11-29 05:48:54,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 63 transitions, 232 flow [2023-11-29 05:48:54,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 216 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-29 05:48:54,431 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 152 flow [2023-11-29 05:48:54,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-11-29 05:48:54,432 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2023-11-29 05:48:54,432 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 152 flow [2023-11-29 05:48:54,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 36.63636363636363) internal successors, (403), 11 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:48:54,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:54,432 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1] [2023-11-29 05:48:54,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 05:48:54,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:54,633 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:48:54,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:54,633 INFO L85 PathProgramCache]: Analyzing trace with hash -314230427, now seen corresponding path program 2 times [2023-11-29 05:48:54,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:48:54,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782107936] [2023-11-29 05:48:54,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:48:54,634 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 05:48:54,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:48:54,635 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:54,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 05:48:54,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:48:54,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:48:54,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:48:54,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:54,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:54,747 INFO L349 Elim1Store]: treesize reduction 60, result has 10.4 percent of original size [2023-11-29 05:48:54,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-29 05:48:54,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:54,774 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-29 05:48:54,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-29 05:48:54,797 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:48:54,797 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 05:48:54,826 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-29 05:48:54,826 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 05:48:54,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:54,856 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-29 05:48:54,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-29 05:48:54,878 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:48:54,878 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 05:48:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:48:55,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:48:55,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:48:55,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782107936] [2023-11-29 05:48:55,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782107936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:48:55,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:48:55,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:48:55,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181431319] [2023-11-29 05:48:55,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:48:55,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:48:55,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:48:55,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:48:55,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:48:55,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2023-11-29 05:48:55,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 05:48:55,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:55,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2023-11-29 05:48:55,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:48:55,761 INFO L124 PetriNetUnfolderBase]: 1166/2029 cut-off events. [2023-11-29 05:48:55,761 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 05:48:55,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 2029 events. 1166/2029 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11266 event pairs, 908 based on Foata normal form. 0/1576 useless extension candidates. Maximal degree in co-relation 3686. Up to 1642 conditions per place. [2023-11-29 05:48:55,777 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 32 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-11-29 05:48:55,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 59 transitions, 214 flow [2023-11-29 05:48:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:48:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:48:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2023-11-29 05:48:55,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2023-11-29 05:48:55,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2023-11-29 05:48:55,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2023-11-29 05:48:55,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:48:55,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2023-11-29 05:48:55,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 05:48:55,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:55,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:55,781 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 152 flow. Second operand 3 states and 129 transitions. [2023-11-29 05:48:55,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 59 transitions, 214 flow [2023-11-29 05:48:55,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 202 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-29 05:48:55,783 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 138 flow [2023-11-29 05:48:55,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2023-11-29 05:48:55,784 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2023-11-29 05:48:55,784 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 138 flow [2023-11-29 05:48:55,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 05:48:55,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:55,785 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1] [2023-11-29 05:48:55,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-29 05:48:55,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:55,985 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:48:55,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:55,986 INFO L85 PathProgramCache]: Analyzing trace with hash -314230426, now seen corresponding path program 1 times [2023-11-29 05:48:55,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:48:55,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121494835] [2023-11-29 05:48:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:55,987 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 05:48:55,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:48:55,988 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:55,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 05:48:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:56,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:48:56,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:56,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-29 05:48:56,143 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 14 treesize of output 11 [2023-11-29 05:48:56,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2023-11-29 05:48:56,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,163 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 05:48:56,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,174 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 9 treesize of output 11 [2023-11-29 05:48:56,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,180 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 05:48:56,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,204 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-29 05:48:56,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 05:48:56,212 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 05:48:56,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,266 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-29 05:48:56,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 05:48:56,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-29 05:48:56,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-29 05:48:56,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:56,325 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-29 05:48:56,325 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 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-29 05:48:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:48:56,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:48:56,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:48:56,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121494835] [2023-11-29 05:48:56,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121494835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:48:56,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:48:56,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:48:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144745463] [2023-11-29 05:48:56,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:48:56,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:48:56,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:48:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:48:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:48:56,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2023-11-29 05:48:56,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 05:48:56,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:56,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2023-11-29 05:48:56,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:48:57,028 INFO L124 PetriNetUnfolderBase]: 791/1450 cut-off events. [2023-11-29 05:48:57,028 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 05:48:57,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2634 conditions, 1450 events. 791/1450 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8101 event pairs, 608 based on Foata normal form. 126/1259 useless extension candidates. Maximal degree in co-relation 2626. Up to 1141 conditions per place. [2023-11-29 05:48:57,040 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 30 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-11-29 05:48:57,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 196 flow [2023-11-29 05:48:57,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:48:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:48:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2023-11-29 05:48:57,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-29 05:48:57,042 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 133 transitions. [2023-11-29 05:48:57,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 133 transitions. [2023-11-29 05:48:57,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:48:57,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 133 transitions. [2023-11-29 05:48:57,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 05:48:57,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:57,044 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:57,044 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 138 flow. Second operand 3 states and 133 transitions. [2023-11-29 05:48:57,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 196 flow [2023-11-29 05:48:57,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:48:57,046 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 135 flow [2023-11-29 05:48:57,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-11-29 05:48:57,046 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2023-11-29 05:48:57,047 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 135 flow [2023-11-29 05:48:57,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 05:48:57,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:57,047 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2023-11-29 05:48:57,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 05:48:57,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:57,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:48:57,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:57,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1790957696, now seen corresponding path program 1 times [2023-11-29 05:48:57,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:48:57,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994467445] [2023-11-29 05:48:57,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:57,252 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 05:48:57,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:48:57,253 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:57,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 05:48:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:57,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:48:57,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:57,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,417 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-29 05:48:57,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-29 05:48:57,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 05:48:57,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2023-11-29 05:48:57,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,472 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 5 treesize of output 3 [2023-11-29 05:48:57,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,509 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-29 05:48:57,509 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 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-29 05:48:57,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,539 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-29 05:48:57,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-29 05:48:57,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,571 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-29 05:48:57,571 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 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-29 05:48:57,576 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 05:48:57,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,591 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 9 treesize of output 11 [2023-11-29 05:48:57,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,596 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 05:48:57,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,631 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-29 05:48:57,631 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 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-29 05:48:57,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,639 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 05:48:57,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:57,658 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 9 treesize of output 11 [2023-11-29 05:48:57,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:48:58,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:48:58,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:48:58,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994467445] [2023-11-29 05:48:58,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994467445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:48:58,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:48:58,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:48:58,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236129933] [2023-11-29 05:48:58,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:48:58,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:48:58,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:48:58,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:48:58,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:48:58,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2023-11-29 05:48:58,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 05:48:58,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:58,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2023-11-29 05:48:58,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:48:58,391 INFO L124 PetriNetUnfolderBase]: 791/1441 cut-off events. [2023-11-29 05:48:58,392 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 05:48:58,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2626 conditions, 1441 events. 791/1441 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8033 event pairs, 608 based on Foata normal form. 25/1158 useless extension candidates. Maximal degree in co-relation 2617. Up to 1141 conditions per place. [2023-11-29 05:48:58,403 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 30 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-11-29 05:48:58,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 193 flow [2023-11-29 05:48:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:48:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:48:58,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2023-11-29 05:48:58,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-29 05:48:58,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 133 transitions. [2023-11-29 05:48:58,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 133 transitions. [2023-11-29 05:48:58,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:48:58,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 133 transitions. [2023-11-29 05:48:58,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 05:48:58,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:58,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:58,407 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 135 flow. Second operand 3 states and 133 transitions. [2023-11-29 05:48:58,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 193 flow [2023-11-29 05:48:58,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:48:58,409 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 132 flow [2023-11-29 05:48:58,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2023-11-29 05:48:58,410 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -7 predicate places. [2023-11-29 05:48:58,410 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 132 flow [2023-11-29 05:48:58,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 05:48:58,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:58,410 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2023-11-29 05:48:58,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 05:48:58,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:58,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:48:58,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:58,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1790957695, now seen corresponding path program 1 times [2023-11-29 05:48:58,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:48:58,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121324580] [2023-11-29 05:48:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:58,614 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 05:48:58,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:48:58,615 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:58,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 05:48:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:58,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:48:58,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:58,751 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-29 05:48:58,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2023-11-29 05:48:58,769 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:48:58,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-29 05:48:58,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:58,798 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:48:58,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-29 05:48:58,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:58,835 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-29 05:48:58,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2023-11-29 05:48:58,859 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-29 05:48:58,859 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 05:48:58,872 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:48:58,872 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 05:48:58,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:58,895 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-29 05:48:58,895 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 05:48:58,909 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:48:58,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-29 05:48:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:48:59,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:48:59,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:48:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121324580] [2023-11-29 05:48:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121324580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:48:59,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:48:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:48:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160698353] [2023-11-29 05:48:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:48:59,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:48:59,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:48:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:48:59,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:48:59,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2023-11-29 05:48:59,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 05:48:59,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:48:59,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2023-11-29 05:48:59,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:48:59,603 INFO L124 PetriNetUnfolderBase]: 846/1536 cut-off events. [2023-11-29 05:48:59,604 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 05:48:59,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1536 events. 846/1536 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8461 event pairs, 652 based on Foata normal form. 0/1210 useless extension candidates. Maximal degree in co-relation 2797. Up to 1226 conditions per place. [2023-11-29 05:48:59,613 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 32 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-11-29 05:48:59,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 194 flow [2023-11-29 05:48:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:48:59,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:48:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2023-11-29 05:48:59,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2023-11-29 05:48:59,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2023-11-29 05:48:59,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2023-11-29 05:48:59,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:48:59,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2023-11-29 05:48:59,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 05:48:59,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:59,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:48:59,616 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 132 flow. Second operand 3 states and 129 transitions. [2023-11-29 05:48:59,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 194 flow [2023-11-29 05:48:59,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:48:59,618 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 129 flow [2023-11-29 05:48:59,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-11-29 05:48:59,619 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -8 predicate places. [2023-11-29 05:48:59,620 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 129 flow [2023-11-29 05:48:59,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 05:48:59,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:48:59,620 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:48:59,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-29 05:48:59,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:59,821 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:48:59,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:48:59,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1170978100, now seen corresponding path program 1 times [2023-11-29 05:48:59,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:48:59,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145909773] [2023-11-29 05:48:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:48:59,822 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 05:48:59,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:48:59,823 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:48:59,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 05:48:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:48:59,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:48:59,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:48:59,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:48:59,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:59,924 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 05:48:59,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:59,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:48:59,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:59,933 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 05:48:59,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:59,940 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 05:48:59,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:59,951 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 05:48:59,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:59,958 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 05:48:59,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:59,970 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 05:48:59,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:59,974 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 05:48:59,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:59,979 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 05:48:59,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:59,985 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 05:48:59,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:48:59,988 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 05:49:00,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,005 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 05:49:00,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:49:00,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,037 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 16 treesize of output 1 [2023-11-29 05:49:00,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,043 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 05:49:00,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,056 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 05:49:00,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:00,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,074 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 05:49:00,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,079 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 05:49:00,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,084 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 05:49:00,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,088 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 05:49:00,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,092 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 05:49:00,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,098 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 05:49:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:00,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:49:00,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:00,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145909773] [2023-11-29 05:49:00,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145909773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:49:00,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:49:00,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:49:00,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99434889] [2023-11-29 05:49:00,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:49:00,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:49:00,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:00,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:49:00,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:49:00,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2023-11-29 05:49:00,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 05:49:00,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:00,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2023-11-29 05:49:00,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:00,511 INFO L124 PetriNetUnfolderBase]: 791/1370 cut-off events. [2023-11-29 05:49:00,512 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 05:49:00,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 1370 events. 791/1370 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7152 event pairs, 608 based on Foata normal form. 0/1133 useless extension candidates. Maximal degree in co-relation 2546. Up to 1134 conditions per place. [2023-11-29 05:49:00,517 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 29 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-11-29 05:49:00,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 185 flow [2023-11-29 05:49:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:49:00,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:49:00,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2023-11-29 05:49:00,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-11-29 05:49:00,519 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 160 transitions. [2023-11-29 05:49:00,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 160 transitions. [2023-11-29 05:49:00,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:00,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 160 transitions. [2023-11-29 05:49:00,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 05:49:00,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 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 05:49:00,521 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 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 05:49:00,521 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 129 flow. Second operand 4 states and 160 transitions. [2023-11-29 05:49:00,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 185 flow [2023-11-29 05:49:00,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 50 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:49:00,523 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 126 flow [2023-11-29 05:49:00,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2023-11-29 05:49:00,524 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -9 predicate places. [2023-11-29 05:49:00,524 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 126 flow [2023-11-29 05:49:00,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 05:49:00,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:00,524 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:00,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 05:49:00,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:00,725 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:49:00,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:00,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1170978099, now seen corresponding path program 1 times [2023-11-29 05:49:00,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:49:00,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469796457] [2023-11-29 05:49:00,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:00,725 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 05:49:00,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:49:00,726 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:00,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 05:49:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:00,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:49:00,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:00,820 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 05:49:00,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,835 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 05:49:00,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,848 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 05:49:00,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:49:00,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,882 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 05:49:00,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:00,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,896 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 05:49:00,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,908 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 05:49:00,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,915 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 05:49:00,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,919 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 05:49:00,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,923 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 05:49:00,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,929 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 05:49:00,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,937 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 05:49:00,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,949 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 05:49:00,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,953 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 05:49:00,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,959 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 05:49:00,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,964 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 05:49:00,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,971 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 05:49:00,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,981 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 05:49:00,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:00,994 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 05:49:01,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:01,000 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 05:49:01,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:01,005 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 05:49:01,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:01,010 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 05:49:01,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:01,015 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 05:49:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:01,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:49:01,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:01,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469796457] [2023-11-29 05:49:01,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469796457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:49:01,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:49:01,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:49:01,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603867432] [2023-11-29 05:49:01,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:49:01,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:49:01,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:01,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:49:01,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:49:01,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:49:01,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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 05:49:01,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:01,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:49:01,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:01,793 INFO L124 PetriNetUnfolderBase]: 1581/2645 cut-off events. [2023-11-29 05:49:01,793 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-29 05:49:01,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4996 conditions, 2645 events. 1581/2645 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15342 event pairs, 733 based on Foata normal form. 0/2162 useless extension candidates. Maximal degree in co-relation 4984. Up to 1343 conditions per place. [2023-11-29 05:49:01,804 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 51 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2023-11-29 05:49:01,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 73 transitions, 287 flow [2023-11-29 05:49:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:49:01,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:49:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2023-11-29 05:49:01,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6542857142857142 [2023-11-29 05:49:01,806 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 229 transitions. [2023-11-29 05:49:01,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 229 transitions. [2023-11-29 05:49:01,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:01,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 229 transitions. [2023-11-29 05:49:01,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 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 05:49:01,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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 05:49:01,808 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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 05:49:01,809 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 126 flow. Second operand 5 states and 229 transitions. [2023-11-29 05:49:01,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 73 transitions, 287 flow [2023-11-29 05:49:01,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 73 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:49:01,811 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 139 flow [2023-11-29 05:49:01,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-11-29 05:49:01,811 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2023-11-29 05:49:01,811 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 139 flow [2023-11-29 05:49:01,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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 05:49:01,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:01,812 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:01,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 05:49:02,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:02,012 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:49:02,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:02,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1957120538, now seen corresponding path program 1 times [2023-11-29 05:49:02,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:49:02,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099356181] [2023-11-29 05:49:02,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:02,013 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 05:49:02,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:49:02,014 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:02,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 05:49:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:02,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:49:02,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:02,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,163 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 05:49:02,169 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:49:02,172 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:49:02,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,181 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:49:02,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,188 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:49:02,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,196 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:49:02,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,205 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 05:49:02,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,212 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 05:49:02,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,229 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 05:49:02,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,241 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 05:49:02,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,250 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 05:49:02,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:02,263 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 05:49:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:02,316 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:49:02,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:02,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099356181] [2023-11-29 05:49:02,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099356181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:49:02,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:49:02,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:49:02,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878726128] [2023-11-29 05:49:02,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:49:02,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:49:02,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:02,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:49:02,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:49:02,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2023-11-29 05:49:02,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 05:49:02,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:02,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2023-11-29 05:49:02,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:02,711 INFO L124 PetriNetUnfolderBase]: 1434/2443 cut-off events. [2023-11-29 05:49:02,711 INFO L125 PetriNetUnfolderBase]: For 364/421 co-relation queries the response was YES. [2023-11-29 05:49:02,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4832 conditions, 2443 events. 1434/2443 cut-off events. For 364/421 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14084 event pairs, 1152 based on Foata normal form. 53/2092 useless extension candidates. Maximal degree in co-relation 4819. Up to 2064 conditions per place. [2023-11-29 05:49:02,722 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 31 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-11-29 05:49:02,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 49 transitions, 199 flow [2023-11-29 05:49:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:49:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:49:02,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2023-11-29 05:49:02,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-29 05:49:02,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 133 transitions. [2023-11-29 05:49:02,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 133 transitions. [2023-11-29 05:49:02,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:02,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 133 transitions. [2023-11-29 05:49:02,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 05:49:02,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:49:02,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:49:02,724 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 139 flow. Second operand 3 states and 133 transitions. [2023-11-29 05:49:02,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 49 transitions, 199 flow [2023-11-29 05:49:02,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 193 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 05:49:02,726 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 131 flow [2023-11-29 05:49:02,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-11-29 05:49:02,726 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -9 predicate places. [2023-11-29 05:49:02,726 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 131 flow [2023-11-29 05:49:02,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 05:49:02,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:02,727 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:02,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 05:49:02,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:02,927 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:49:02,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:02,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1957120539, now seen corresponding path program 1 times [2023-11-29 05:49:02,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:49:02,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82937300] [2023-11-29 05:49:02,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:02,928 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 05:49:02,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:49:02,929 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:02,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 05:49:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:03,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:49:03,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:03,075 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:49:03,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 05:49:03,097 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:49:03,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-29 05:49:03,118 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:49:03,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 05:49:03,134 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:49:03,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 05:49:03,155 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:49:03,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 05:49:03,171 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:49:03,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 05:49:03,194 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:49:03,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 05:49:03,210 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:49:03,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 05:49:03,226 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:49:03,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 05:49:03,242 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:49:03,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 05:49:03,266 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:49:03,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 05:49:03,282 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:49:03,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 05:49:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:03,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:49:03,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:03,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82937300] [2023-11-29 05:49:03,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82937300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:49:03,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:49:03,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:49:03,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936420650] [2023-11-29 05:49:03,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:49:03,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:49:03,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:03,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:49:03,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:49:03,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2023-11-29 05:49:03,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 05:49:03,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:03,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2023-11-29 05:49:03,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:03,908 INFO L124 PetriNetUnfolderBase]: 1534/2526 cut-off events. [2023-11-29 05:49:03,908 INFO L125 PetriNetUnfolderBase]: For 256/318 co-relation queries the response was YES. [2023-11-29 05:49:03,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5022 conditions, 2526 events. 1534/2526 cut-off events. For 256/318 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14016 event pairs, 1236 based on Foata normal form. 0/2137 useless extension candidates. Maximal degree in co-relation 5009. Up to 2219 conditions per place. [2023-11-29 05:49:03,917 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 33 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-11-29 05:49:03,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 47 transitions, 195 flow [2023-11-29 05:49:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:49:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:49:03,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2023-11-29 05:49:03,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2023-11-29 05:49:03,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2023-11-29 05:49:03,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2023-11-29 05:49:03,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:03,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2023-11-29 05:49:03,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 05:49:03,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:49:03,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 05:49:03,920 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 131 flow. Second operand 3 states and 129 transitions. [2023-11-29 05:49:03,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 47 transitions, 195 flow [2023-11-29 05:49:03,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 47 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:49:03,921 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 128 flow [2023-11-29 05:49:03,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2023-11-29 05:49:03,922 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -10 predicate places. [2023-11-29 05:49:03,922 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 128 flow [2023-11-29 05:49:03,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 05:49:03,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:03,922 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:03,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 05:49:04,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:04,123 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:49:04,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:04,123 INFO L85 PathProgramCache]: Analyzing trace with hash -883231705, now seen corresponding path program 1 times [2023-11-29 05:49:04,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:49:04,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538036729] [2023-11-29 05:49:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:04,124 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 05:49:04,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:49:04,125 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:04,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 05:49:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:04,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:49:04,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:04,227 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 05:49:04,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,240 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 05:49:04,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,246 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 05:49:04,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,250 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 05:49:04,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,257 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 05:49:04,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,261 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 05:49:04,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:04,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,273 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 05:49:04,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:49:04,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,293 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 05:49:04,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,298 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 05:49:04,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,303 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 05:49:04,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,308 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 05:49:04,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,313 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 05:49:04,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,318 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 05:49:04,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,321 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 05:49:04,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,333 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 05:49:04,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,339 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 05:49:04,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:49:04,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,374 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 05:49:04,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,382 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 05:49:04,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,393 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 05:49:04,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,410 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 05:49:04,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:04,416 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 05:49:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:04,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:49:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:04,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:04,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538036729] [2023-11-29 05:49:04,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538036729] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:49:04,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:49:04,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 05:49:04,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208960656] [2023-11-29 05:49:04,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:49:04,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:49:04,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:04,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:49:04,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:49:06,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:49:06,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 128 flow. Second operand has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 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 05:49:06,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:06,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:49:06,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:07,725 INFO L124 PetriNetUnfolderBase]: 2867/4679 cut-off events. [2023-11-29 05:49:07,725 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2023-11-29 05:49:07,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9298 conditions, 4679 events. 2867/4679 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 28626 event pairs, 733 based on Foata normal form. 0/3924 useless extension candidates. Maximal degree in co-relation 9284. Up to 1343 conditions per place. [2023-11-29 05:49:07,748 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 95 selfloop transitions, 6 changer transitions 0/115 dead transitions. [2023-11-29 05:49:07,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 115 transitions, 485 flow [2023-11-29 05:49:07,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:49:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:49:07,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 346 transitions. [2023-11-29 05:49:07,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7061224489795919 [2023-11-29 05:49:07,751 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 346 transitions. [2023-11-29 05:49:07,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 346 transitions. [2023-11-29 05:49:07,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:07,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 346 transitions. [2023-11-29 05:49:07,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 49.42857142857143) internal successors, (346), 7 states have internal predecessors, (346), 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 05:49:07,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:49:07,753 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:49:07,753 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 128 flow. Second operand 7 states and 346 transitions. [2023-11-29 05:49:07,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 115 transitions, 485 flow [2023-11-29 05:49:07,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 115 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:49:07,755 INFO L231 Difference]: Finished difference. Result has 66 places, 49 transitions, 157 flow [2023-11-29 05:49:07,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=157, PETRI_PLACES=66, PETRI_TRANSITIONS=49} [2023-11-29 05:49:07,756 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-11-29 05:49:07,756 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 49 transitions, 157 flow [2023-11-29 05:49:07,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 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 05:49:07,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:07,756 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:07,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 05:49:07,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:07,957 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:49:07,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash 404726839, now seen corresponding path program 1 times [2023-11-29 05:49:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:49:07,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620691405] [2023-11-29 05:49:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:07,957 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 05:49:07,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:49:07,958 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:07,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 05:49:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:08,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:49:08,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:08,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 05:49:08,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,087 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 05:49:08,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,091 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 05:49:08,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,097 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 05:49:08,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,104 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 05:49:08,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,116 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 05:49:08,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,125 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 05:49:08,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,136 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 05:49:08,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,149 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 05:49:08,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,154 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 05:49:08,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:49:08,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,188 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 05:49:08,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,192 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 05:49:08,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:08,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,206 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 05:49:08,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:49:08,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:08,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,230 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 05:49:08,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,239 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 05:49:08,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,251 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 05:49:08,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,259 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 05:49:08,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,264 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 05:49:08,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,271 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 05:49:08,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:08,275 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 05:49:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:08,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:49:08,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:08,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620691405] [2023-11-29 05:49:08,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620691405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:49:08,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:49:08,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:49:08,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967692559] [2023-11-29 05:49:08,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:49:08,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:49:08,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:08,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:49:08,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:49:08,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:49:08,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 49 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 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 05:49:08,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:08,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:49:08,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:09,707 INFO L124 PetriNetUnfolderBase]: 5405/8774 cut-off events. [2023-11-29 05:49:09,707 INFO L125 PetriNetUnfolderBase]: For 2784/2852 co-relation queries the response was YES. [2023-11-29 05:49:09,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18318 conditions, 8774 events. 5405/8774 cut-off events. For 2784/2852 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 58902 event pairs, 3387 based on Foata normal form. 0/7181 useless extension candidates. Maximal degree in co-relation 18301. Up to 4660 conditions per place. [2023-11-29 05:49:09,744 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 55 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2023-11-29 05:49:09,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 351 flow [2023-11-29 05:49:09,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:49:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:49:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2023-11-29 05:49:09,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6485714285714286 [2023-11-29 05:49:09,745 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 227 transitions. [2023-11-29 05:49:09,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 227 transitions. [2023-11-29 05:49:09,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:09,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 227 transitions. [2023-11-29 05:49:09,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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 05:49:09,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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 05:49:09,747 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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 05:49:09,747 INFO L175 Difference]: Start difference. First operand has 66 places, 49 transitions, 157 flow. Second operand 5 states and 227 transitions. [2023-11-29 05:49:09,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 351 flow [2023-11-29 05:49:09,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 336 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-29 05:49:09,750 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 164 flow [2023-11-29 05:49:09,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2023-11-29 05:49:09,750 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2023-11-29 05:49:09,750 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 164 flow [2023-11-29 05:49:09,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 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 05:49:09,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:09,751 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:09,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 05:49:09,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:09,951 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:49:09,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:09,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1245007206, now seen corresponding path program 1 times [2023-11-29 05:49:09,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:49:09,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130641345] [2023-11-29 05:49:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:09,952 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 05:49:09,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:49:09,953 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:09,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 05:49:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:10,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:49:10,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:10,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 05:49:10,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,094 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 05:49:10,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,100 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 05:49:10,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,103 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 05:49:10,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,109 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 05:49:10,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,122 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 05:49:10,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,130 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 05:49:10,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,143 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 05:49:10,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,158 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 05:49:10,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:49:10,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,184 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 05:49:10,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,197 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 05:49:10,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,202 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 05:49:10,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,208 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 05:49:10,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,221 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 05:49:10,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,227 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 05:49:10,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,232 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 05:49:10,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,238 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 05:49:10,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:10,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,280 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 05:49:10,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,284 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 05:49:10,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,289 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 05:49:10,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,295 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 05:49:10,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:10,298 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 05:49:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:10,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:49:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:10,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:10,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130641345] [2023-11-29 05:49:10,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130641345] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:49:10,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:49:10,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 05:49:10,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510362251] [2023-11-29 05:49:10,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:49:10,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:49:10,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:49:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:49:12,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:49:12,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 164 flow. Second operand has 10 states, 10 states have (on average 37.4) internal successors, (374), 10 states have internal predecessors, (374), 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 05:49:12,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:12,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:49:12,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:14,695 INFO L124 PetriNetUnfolderBase]: 9709/15424 cut-off events. [2023-11-29 05:49:14,695 INFO L125 PetriNetUnfolderBase]: For 4290/4479 co-relation queries the response was YES. [2023-11-29 05:49:14,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33324 conditions, 15424 events. 9709/15424 cut-off events. For 4290/4479 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 107468 event pairs, 3387 based on Foata normal form. 0/12696 useless extension candidates. Maximal degree in co-relation 33306. Up to 4660 conditions per place. [2023-11-29 05:49:14,783 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 101 selfloop transitions, 6 changer transitions 0/121 dead transitions. [2023-11-29 05:49:14,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 121 transitions, 590 flow [2023-11-29 05:49:14,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:49:14,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:49:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2023-11-29 05:49:14,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6938775510204082 [2023-11-29 05:49:14,785 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 340 transitions. [2023-11-29 05:49:14,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 340 transitions. [2023-11-29 05:49:14,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:14,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 340 transitions. [2023-11-29 05:49:14,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 48.57142857142857) internal successors, (340), 7 states have internal predecessors, (340), 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 05:49:14,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:49:14,788 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:49:14,788 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 164 flow. Second operand 7 states and 340 transitions. [2023-11-29 05:49:14,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 121 transitions, 590 flow [2023-11-29 05:49:14,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 121 transitions, 584 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 05:49:14,792 INFO L231 Difference]: Finished difference. Result has 73 places, 52 transitions, 188 flow [2023-11-29 05:49:14,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=73, PETRI_TRANSITIONS=52} [2023-11-29 05:49:14,792 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 4 predicate places. [2023-11-29 05:49:14,792 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 52 transitions, 188 flow [2023-11-29 05:49:14,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.4) internal successors, (374), 10 states have internal predecessors, (374), 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 05:49:14,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:14,792 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:14,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 05:49:14,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:14,993 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:49:14,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:14,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1669284303, now seen corresponding path program 1 times [2023-11-29 05:49:14,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:49:14,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521078886] [2023-11-29 05:49:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:14,994 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 05:49:14,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:49:14,995 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:14,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 05:49:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:15,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:49:15,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:15,120 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 05:49:15,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,128 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 05:49:15,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,134 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 05:49:15,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,138 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 05:49:15,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,144 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 05:49:15,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,148 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 05:49:15,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,163 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 05:49:15,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,169 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 05:49:15,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:49:15,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:49:15,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,213 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 05:49:15,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,226 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 05:49:15,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,231 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 05:49:15,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,237 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 05:49:15,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,245 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 05:49:15,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,257 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 05:49:15,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,264 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 05:49:15,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,268 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 05:49:15,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:15,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,289 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 05:49:15,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,294 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 05:49:15,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:15,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,307 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 05:49:15,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:15,311 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 05:49:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:15,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:49:15,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:15,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521078886] [2023-11-29 05:49:15,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521078886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:49:15,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:49:15,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:49:15,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271632722] [2023-11-29 05:49:15,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:49:15,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:49:15,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:15,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:49:15,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:49:15,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:49:15,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 52 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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 05:49:15,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:15,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:49:15,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:19,089 INFO L124 PetriNetUnfolderBase]: 17161/26726 cut-off events. [2023-11-29 05:49:19,089 INFO L125 PetriNetUnfolderBase]: For 13910/14289 co-relation queries the response was YES. [2023-11-29 05:49:19,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60939 conditions, 26726 events. 17161/26726 cut-off events. For 13910/14289 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 198330 event pairs, 9609 based on Foata normal form. 0/21500 useless extension candidates. Maximal degree in co-relation 60919. Up to 15390 conditions per place. [2023-11-29 05:49:19,272 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 59 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-11-29 05:49:19,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 77 transitions, 409 flow [2023-11-29 05:49:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:49:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:49:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2023-11-29 05:49:19,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2023-11-29 05:49:19,274 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 225 transitions. [2023-11-29 05:49:19,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 225 transitions. [2023-11-29 05:49:19,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:19,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 225 transitions. [2023-11-29 05:49:19,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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 05:49:19,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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 05:49:19,276 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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 05:49:19,276 INFO L175 Difference]: Start difference. First operand has 73 places, 52 transitions, 188 flow. Second operand 5 states and 225 transitions. [2023-11-29 05:49:19,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 77 transitions, 409 flow [2023-11-29 05:49:19,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 394 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-29 05:49:19,297 INFO L231 Difference]: Finished difference. Result has 75 places, 53 transitions, 195 flow [2023-11-29 05:49:19,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=75, PETRI_TRANSITIONS=53} [2023-11-29 05:49:19,297 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 6 predicate places. [2023-11-29 05:49:19,298 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 53 transitions, 195 flow [2023-11-29 05:49:19,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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 05:49:19,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:19,298 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:19,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-29 05:49:19,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:19,498 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:49:19,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1613058663, now seen corresponding path program 2 times [2023-11-29 05:49:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:49:19,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78488118] [2023-11-29 05:49:19,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:49:19,499 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 05:49:19,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:49:19,500 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:19,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 05:49:19,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:49:19,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:49:19,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:49:19,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:19,667 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 05:49:19,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:49:19,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:19,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:49:19,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,721 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 05:49:19,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,727 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 05:49:19,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,735 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 05:49:19,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,740 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 05:49:19,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,748 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 05:49:19,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,761 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 05:49:19,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,769 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 05:49:19,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,773 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 05:49:19,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,783 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 05:49:19,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,797 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 05:49:19,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,802 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 05:49:19,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,809 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 05:49:19,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,817 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 05:49:19,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,821 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 05:49:19,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,827 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 05:49:19,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,834 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 05:49:19,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,850 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 05:49:19,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,857 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 05:49:19,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,865 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 05:49:19,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:19,869 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 05:49:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:20,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:49:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:20,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:20,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78488118] [2023-11-29 05:49:20,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78488118] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:49:20,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:49:20,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2023-11-29 05:49:20,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782754601] [2023-11-29 05:49:20,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:49:20,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 05:49:20,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:20,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 05:49:20,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:49:23,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:49:23,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 53 transitions, 195 flow. Second operand has 13 states, 13 states have (on average 37.15384615384615) internal successors, (483), 13 states have internal predecessors, (483), 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 05:49:23,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:23,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:49:23,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:26,922 INFO L124 PetriNetUnfolderBase]: 14387/23731 cut-off events. [2023-11-29 05:49:26,922 INFO L125 PetriNetUnfolderBase]: For 9916/10822 co-relation queries the response was YES. [2023-11-29 05:49:26,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52924 conditions, 23731 events. 14387/23731 cut-off events. For 9916/10822 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 187379 event pairs, 440 based on Foata normal form. 0/20018 useless extension candidates. Maximal degree in co-relation 52903. Up to 5255 conditions per place. [2023-11-29 05:49:27,037 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 127 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2023-11-29 05:49:27,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 147 transitions, 760 flow [2023-11-29 05:49:27,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:49:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 05:49:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 392 transitions. [2023-11-29 05:49:27,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-29 05:49:27,039 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 392 transitions. [2023-11-29 05:49:27,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 392 transitions. [2023-11-29 05:49:27,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:27,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 392 transitions. [2023-11-29 05:49:27,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 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 05:49:27,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 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 05:49:27,041 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 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 05:49:27,041 INFO L175 Difference]: Start difference. First operand has 75 places, 53 transitions, 195 flow. Second operand 8 states and 392 transitions. [2023-11-29 05:49:27,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 147 transitions, 760 flow [2023-11-29 05:49:27,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 147 transitions, 737 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 05:49:27,086 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 181 flow [2023-11-29 05:49:27,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=181, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2023-11-29 05:49:27,087 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 6 predicate places. [2023-11-29 05:49:27,087 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 181 flow [2023-11-29 05:49:27,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.15384615384615) internal successors, (483), 13 states have internal predecessors, (483), 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 05:49:27,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:27,087 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:27,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-29 05:49:27,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:27,288 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:49:27,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1776694345, now seen corresponding path program 1 times [2023-11-29 05:49:27,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:49:27,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552281768] [2023-11-29 05:49:27,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:27,288 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 05:49:27,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:49:27,289 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:27,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 05:49:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:27,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:49:27,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:27,422 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 05:49:27,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,431 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 05:49:27,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,436 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 05:49:27,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:27,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:49:27,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,453 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 05:49:27,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,461 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 05:49:27,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,465 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 05:49:27,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,479 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 05:49:27,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,486 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 05:49:27,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,490 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 05:49:27,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,497 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 05:49:27,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,503 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 05:49:27,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:27,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,516 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 05:49:27,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,520 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 05:49:27,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,535 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 05:49:27,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,541 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 05:49:27,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,558 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 05:49:27,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:49:27,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,595 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 05:49:27,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,601 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 05:49:27,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,609 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 05:49:27,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:27,622 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 05:49:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:27,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:49:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:28,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:28,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552281768] [2023-11-29 05:49:28,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552281768] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:49:28,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:49:28,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 05:49:28,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171161604] [2023-11-29 05:49:28,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:49:28,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:49:28,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:28,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:49:28,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:49:29,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:49:29,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 51 transitions, 181 flow. Second operand has 10 states, 10 states have (on average 37.8) internal successors, (378), 10 states have internal predecessors, (378), 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 05:49:29,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:29,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:49:29,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:35,912 INFO L124 PetriNetUnfolderBase]: 27689/43416 cut-off events. [2023-11-29 05:49:35,912 INFO L125 PetriNetUnfolderBase]: For 21918/22409 co-relation queries the response was YES. [2023-11-29 05:49:36,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100332 conditions, 43416 events. 27689/43416 cut-off events. For 21918/22409 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 340970 event pairs, 8973 based on Foata normal form. 0/37481 useless extension candidates. Maximal degree in co-relation 100313. Up to 14330 conditions per place. [2023-11-29 05:49:36,201 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 103 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2023-11-29 05:49:36,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 659 flow [2023-11-29 05:49:36,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:49:36,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:49:36,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 334 transitions. [2023-11-29 05:49:36,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6816326530612244 [2023-11-29 05:49:36,204 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 334 transitions. [2023-11-29 05:49:36,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 334 transitions. [2023-11-29 05:49:36,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:36,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 334 transitions. [2023-11-29 05:49:36,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 47.714285714285715) internal successors, (334), 7 states have internal predecessors, (334), 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 05:49:36,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:49:36,206 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:49:36,206 INFO L175 Difference]: Start difference. First operand has 75 places, 51 transitions, 181 flow. Second operand 7 states and 334 transitions. [2023-11-29 05:49:36,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 659 flow [2023-11-29 05:49:36,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 122 transitions, 627 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 05:49:36,392 INFO L231 Difference]: Finished difference. Result has 77 places, 53 transitions, 200 flow [2023-11-29 05:49:36,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=77, PETRI_TRANSITIONS=53} [2023-11-29 05:49:36,393 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 8 predicate places. [2023-11-29 05:49:36,393 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 53 transitions, 200 flow [2023-11-29 05:49:36,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.8) internal successors, (378), 10 states have internal predecessors, (378), 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 05:49:36,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:36,394 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:36,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 05:49:36,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:36,594 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:49:36,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:36,594 INFO L85 PathProgramCache]: Analyzing trace with hash -224384058, now seen corresponding path program 2 times [2023-11-29 05:49:36,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:49:36,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260779840] [2023-11-29 05:49:36,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:49:36,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:49:36,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:49:36,596 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:36,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (22)] Waiting until timeout for monitored process [2023-11-29 05:49:36,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:49:36,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:49:36,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:49:36,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:36,757 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 05:49:36,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,767 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 05:49:36,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,771 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 05:49:36,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,778 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 05:49:36,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,781 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 05:49:36,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,787 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 05:49:36,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:36,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,797 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 05:49:36,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,801 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 05:49:36,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,807 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 05:49:36,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,813 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 05:49:36,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,824 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 05:49:36,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,834 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 05:49:36,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,845 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 05:49:36,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,858 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 05:49:36,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:49:36,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,884 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 05:49:36,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,895 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 05:49:36,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,900 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 05:49:36,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:36,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,921 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 05:49:36,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,926 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 05:49:36,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,933 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 05:49:36,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:36,936 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 05:49:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:37,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:49:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:37,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260779840] [2023-11-29 05:49:37,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260779840] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:49:37,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:49:37,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2023-11-29 05:49:37,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563491023] [2023-11-29 05:49:37,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:49:37,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 05:49:37,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:37,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 05:49:37,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:49:40,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:49:40,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 53 transitions, 200 flow. Second operand has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 13 states have internal predecessors, (487), 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 05:49:40,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:40,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:49:40,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:46,749 INFO L124 PetriNetUnfolderBase]: 24043/38215 cut-off events. [2023-11-29 05:49:46,749 INFO L125 PetriNetUnfolderBase]: For 22191/22711 co-relation queries the response was YES. [2023-11-29 05:49:46,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89069 conditions, 38215 events. 24043/38215 cut-off events. For 22191/22711 co-relation queries the response was YES. Maximal size of possible extension queue 1282. Compared 303364 event pairs, 875 based on Foata normal form. 0/33910 useless extension candidates. Maximal degree in co-relation 89048. Up to 8840 conditions per place. [2023-11-29 05:49:46,967 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 125 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2023-11-29 05:49:46,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 144 transitions, 784 flow [2023-11-29 05:49:46,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:49:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 05:49:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 385 transitions. [2023-11-29 05:49:46,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2023-11-29 05:49:46,970 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 385 transitions. [2023-11-29 05:49:46,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 385 transitions. [2023-11-29 05:49:46,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:46,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 385 transitions. [2023-11-29 05:49:46,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 48.125) internal successors, (385), 8 states have internal predecessors, (385), 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 05:49:46,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 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 05:49:46,973 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 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 05:49:46,973 INFO L175 Difference]: Start difference. First operand has 77 places, 53 transitions, 200 flow. Second operand 8 states and 385 transitions. [2023-11-29 05:49:46,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 144 transitions, 784 flow [2023-11-29 05:49:47,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 144 transitions, 742 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-11-29 05:49:47,154 INFO L231 Difference]: Finished difference. Result has 77 places, 51 transitions, 183 flow [2023-11-29 05:49:47,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=183, PETRI_PLACES=77, PETRI_TRANSITIONS=51} [2023-11-29 05:49:47,155 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 8 predicate places. [2023-11-29 05:49:47,155 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 51 transitions, 183 flow [2023-11-29 05:49:47,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 13 states have internal predecessors, (487), 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 05:49:47,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:47,155 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:47,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (22)] Ended with exit code 0 [2023-11-29 05:49:47,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:47,355 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:49:47,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:47,356 INFO L85 PathProgramCache]: Analyzing trace with hash -513436489, now seen corresponding path program 2 times [2023-11-29 05:49:47,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:49:47,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808207863] [2023-11-29 05:49:47,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:49:47,356 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 05:49:47,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:49:47,357 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:47,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (23)] Waiting until timeout for monitored process [2023-11-29 05:49:47,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:49:47,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:49:47,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:49:47,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:47,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 05:49:47,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:47,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,545 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 05:49:47,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:49:47,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,562 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 05:49:47,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,569 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 05:49:47,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,578 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 05:49:47,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:49:47,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,586 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 05:49:47,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:47,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,599 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 05:49:47,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,611 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 05:49:47,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,619 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 05:49:47,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,624 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 05:49:47,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:49:47,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:49:47,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,650 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 05:49:47,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,656 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 05:49:47,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,665 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 05:49:47,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,678 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 05:49:47,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:49:47,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,698 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 05:49:47,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 05:49:47,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:49:47,735 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 05:49:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:47,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:49:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:48,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:48,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808207863] [2023-11-29 05:49:48,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808207863] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:49:48,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:49:48,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2023-11-29 05:49:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19880734] [2023-11-29 05:49:48,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:49:48,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 05:49:48,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:48,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 05:49:48,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:49:50,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2023-11-29 05:49:50,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 51 transitions, 183 flow. Second operand has 13 states, 13 states have (on average 37.76923076923077) internal successors, (491), 13 states have internal predecessors, (491), 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 05:49:50,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:50,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2023-11-29 05:49:50,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:49:55,634 INFO L124 PetriNetUnfolderBase]: 22095/35100 cut-off events. [2023-11-29 05:49:55,634 INFO L125 PetriNetUnfolderBase]: For 17750/17756 co-relation queries the response was YES. [2023-11-29 05:49:55,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81692 conditions, 35100 events. 22095/35100 cut-off events. For 17750/17756 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 273289 event pairs, 1755 based on Foata normal form. 0/33307 useless extension candidates. Maximal degree in co-relation 81673. Up to 7824 conditions per place. [2023-11-29 05:49:55,833 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 113 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2023-11-29 05:49:55,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 131 transitions, 690 flow [2023-11-29 05:49:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:49:55,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 05:49:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 378 transitions. [2023-11-29 05:49:55,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2023-11-29 05:49:55,835 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 378 transitions. [2023-11-29 05:49:55,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 378 transitions. [2023-11-29 05:49:55,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:49:55,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 378 transitions. [2023-11-29 05:49:55,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 47.25) internal successors, (378), 8 states have internal predecessors, (378), 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 05:49:55,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 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 05:49:55,837 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 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 05:49:55,837 INFO L175 Difference]: Start difference. First operand has 77 places, 51 transitions, 183 flow. Second operand 8 states and 378 transitions. [2023-11-29 05:49:55,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 131 transitions, 690 flow [2023-11-29 05:49:55,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 131 transitions, 642 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-29 05:49:55,988 INFO L231 Difference]: Finished difference. Result has 74 places, 49 transitions, 164 flow [2023-11-29 05:49:55,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=164, PETRI_PLACES=74, PETRI_TRANSITIONS=49} [2023-11-29 05:49:55,988 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 5 predicate places. [2023-11-29 05:49:55,988 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 49 transitions, 164 flow [2023-11-29 05:49:55,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.76923076923077) internal successors, (491), 13 states have internal predecessors, (491), 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 05:49:55,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:49:55,989 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:49:55,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (23)] Ended with exit code 0 [2023-11-29 05:49:56,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:56,189 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:49:56,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:49:56,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2048545187, now seen corresponding path program 1 times [2023-11-29 05:49:56,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:49:56,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255911943] [2023-11-29 05:49:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:49:56,190 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 05:49:56,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:49:56,191 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:49:56,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (24)] Waiting until timeout for monitored process [2023-11-29 05:49:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:49:56,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:49:56,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:49:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:49:56,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:49:56,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:49:56,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255911943] [2023-11-29 05:49:56,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255911943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:49:56,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:49:56,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:49:56,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847560758] [2023-11-29 05:49:56,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:49:56,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:49:56,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:49:56,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:49:56,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:49:56,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:49:56,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 49 transitions, 164 flow. Second operand has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:49:56,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:49:56,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:49:56,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:50:01,622 INFO L124 PetriNetUnfolderBase]: 22431/37112 cut-off events. [2023-11-29 05:50:01,622 INFO L125 PetriNetUnfolderBase]: For 15859/15899 co-relation queries the response was YES. [2023-11-29 05:50:01,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84460 conditions, 37112 events. 22431/37112 cut-off events. For 15859/15899 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 308932 event pairs, 19174 based on Foata normal form. 41/36909 useless extension candidates. Maximal degree in co-relation 84443. Up to 24052 conditions per place. [2023-11-29 05:50:01,859 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 102 selfloop transitions, 6 changer transitions 9/129 dead transitions. [2023-11-29 05:50:01,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 129 transitions, 668 flow [2023-11-29 05:50:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:50:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:50:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 352 transitions. [2023-11-29 05:50:01,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183673469387755 [2023-11-29 05:50:01,862 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 352 transitions. [2023-11-29 05:50:01,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 352 transitions. [2023-11-29 05:50:01,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:50:01,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 352 transitions. [2023-11-29 05:50:01,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 50.285714285714285) internal successors, (352), 7 states have internal predecessors, (352), 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 05:50:01,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:50:01,864 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:50:01,864 INFO L175 Difference]: Start difference. First operand has 74 places, 49 transitions, 164 flow. Second operand 7 states and 352 transitions. [2023-11-29 05:50:01,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 129 transitions, 668 flow [2023-11-29 05:50:01,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 129 transitions, 629 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 05:50:01,877 INFO L231 Difference]: Finished difference. Result has 79 places, 53 transitions, 200 flow [2023-11-29 05:50:01,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=79, PETRI_TRANSITIONS=53} [2023-11-29 05:50:01,877 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2023-11-29 05:50:01,877 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 53 transitions, 200 flow [2023-11-29 05:50:01,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:50:01,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:50:01,878 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:50:01,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (24)] Ended with exit code 0 [2023-11-29 05:50:02,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:02,078 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:50:02,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:02,079 INFO L85 PathProgramCache]: Analyzing trace with hash -979573343, now seen corresponding path program 2 times [2023-11-29 05:50:02,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:02,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574234592] [2023-11-29 05:50:02,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:50:02,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:50:02,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:02,080 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:02,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (25)] Waiting until timeout for monitored process [2023-11-29 05:50:02,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:50:02,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:50:02,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:50:02,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:50:02,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:02,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:02,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574234592] [2023-11-29 05:50:02,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574234592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:02,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:02,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:50:02,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111570496] [2023-11-29 05:50:02,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:02,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:50:02,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:02,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:50:02,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:50:02,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:50:02,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 53 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 05:50:02,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:50:02,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:50:02,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:50:07,478 INFO L124 PetriNetUnfolderBase]: 22638/36701 cut-off events. [2023-11-29 05:50:07,479 INFO L125 PetriNetUnfolderBase]: For 25385/25419 co-relation queries the response was YES. [2023-11-29 05:50:07,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93581 conditions, 36701 events. 22638/36701 cut-off events. For 25385/25419 co-relation queries the response was YES. Maximal size of possible extension queue 1272. Compared 299872 event pairs, 16477 based on Foata normal form. 20/36696 useless extension candidates. Maximal degree in co-relation 93560. Up to 24102 conditions per place. [2023-11-29 05:50:07,735 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 90 selfloop transitions, 8 changer transitions 14/124 dead transitions. [2023-11-29 05:50:07,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 705 flow [2023-11-29 05:50:07,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:50:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:50:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 302 transitions. [2023-11-29 05:50:07,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.719047619047619 [2023-11-29 05:50:07,737 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 302 transitions. [2023-11-29 05:50:07,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 302 transitions. [2023-11-29 05:50:07,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:50:07,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 302 transitions. [2023-11-29 05:50:07,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.333333333333336) internal successors, (302), 6 states have internal predecessors, (302), 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 05:50:07,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:50:07,739 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:50:07,739 INFO L175 Difference]: Start difference. First operand has 79 places, 53 transitions, 200 flow. Second operand 6 states and 302 transitions. [2023-11-29 05:50:07,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 705 flow [2023-11-29 05:50:07,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 124 transitions, 673 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-29 05:50:07,844 INFO L231 Difference]: Finished difference. Result has 84 places, 56 transitions, 243 flow [2023-11-29 05:50:07,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=84, PETRI_TRANSITIONS=56} [2023-11-29 05:50:07,844 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 15 predicate places. [2023-11-29 05:50:07,844 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 56 transitions, 243 flow [2023-11-29 05:50:07,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 05:50:07,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:50:07,845 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:50:07,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (25)] Ended with exit code 0 [2023-11-29 05:50:08,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:08,045 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:50:08,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash -130985061, now seen corresponding path program 3 times [2023-11-29 05:50:08,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:08,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065653132] [2023-11-29 05:50:08,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:50:08,046 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 05:50:08,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:08,047 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:08,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (26)] Waiting until timeout for monitored process [2023-11-29 05:50:08,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 05:50:08,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:50:08,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:50:08,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:50:08,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:08,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:08,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065653132] [2023-11-29 05:50:08,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065653132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:08,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:08,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:50:08,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128167918] [2023-11-29 05:50:08,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:08,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:50:08,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:08,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:50:08,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:50:08,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:50:08,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 56 transitions, 243 flow. Second operand has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:50:08,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:50:08,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:50:08,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:50:14,015 INFO L124 PetriNetUnfolderBase]: 23004/38128 cut-off events. [2023-11-29 05:50:14,016 INFO L125 PetriNetUnfolderBase]: For 35705/35728 co-relation queries the response was YES. [2023-11-29 05:50:14,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102124 conditions, 38128 events. 23004/38128 cut-off events. For 35705/35728 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 322382 event pairs, 16613 based on Foata normal form. 11/38033 useless extension candidates. Maximal degree in co-relation 102100. Up to 24262 conditions per place. [2023-11-29 05:50:14,323 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 117 selfloop transitions, 8 changer transitions 7/144 dead transitions. [2023-11-29 05:50:14,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 144 transitions, 940 flow [2023-11-29 05:50:14,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:50:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:50:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 349 transitions. [2023-11-29 05:50:14,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7122448979591837 [2023-11-29 05:50:14,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 349 transitions. [2023-11-29 05:50:14,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 349 transitions. [2023-11-29 05:50:14,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:50:14,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 349 transitions. [2023-11-29 05:50:14,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 49.857142857142854) internal successors, (349), 7 states have internal predecessors, (349), 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 05:50:14,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:50:14,326 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:50:14,326 INFO L175 Difference]: Start difference. First operand has 84 places, 56 transitions, 243 flow. Second operand 7 states and 349 transitions. [2023-11-29 05:50:14,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 144 transitions, 940 flow [2023-11-29 05:50:14,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 144 transitions, 892 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-29 05:50:14,360 INFO L231 Difference]: Finished difference. Result has 90 places, 61 transitions, 304 flow [2023-11-29 05:50:14,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=304, PETRI_PLACES=90, PETRI_TRANSITIONS=61} [2023-11-29 05:50:14,360 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 21 predicate places. [2023-11-29 05:50:14,360 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 61 transitions, 304 flow [2023-11-29 05:50:14,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:50:14,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:50:14,361 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:50:14,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (26)] Ended with exit code 0 [2023-11-29 05:50:14,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:14,561 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:50:14,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:14,562 INFO L85 PathProgramCache]: Analyzing trace with hash -150119791, now seen corresponding path program 4 times [2023-11-29 05:50:14,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:14,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000191789] [2023-11-29 05:50:14,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:50:14,562 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 05:50:14,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:14,563 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:14,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (27)] Waiting until timeout for monitored process [2023-11-29 05:50:14,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:50:14,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:50:14,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:50:14,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:50:15,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:15,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:15,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000191789] [2023-11-29 05:50:15,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000191789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:15,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:15,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:50:15,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483758044] [2023-11-29 05:50:15,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:15,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:50:15,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:50:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:50:15,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:50:15,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 61 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 05:50:15,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:50:15,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:50:15,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:50:21,635 INFO L124 PetriNetUnfolderBase]: 24486/39904 cut-off events. [2023-11-29 05:50:21,636 INFO L125 PetriNetUnfolderBase]: For 48045/48071 co-relation queries the response was YES. [2023-11-29 05:50:21,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112783 conditions, 39904 events. 24486/39904 cut-off events. For 48045/48071 co-relation queries the response was YES. Maximal size of possible extension queue 1381. Compared 332187 event pairs, 16761 based on Foata normal form. 18/39883 useless extension candidates. Maximal degree in co-relation 112756. Up to 24672 conditions per place. [2023-11-29 05:50:22,007 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 97 selfloop transitions, 18 changer transitions 15/142 dead transitions. [2023-11-29 05:50:22,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 142 transitions, 971 flow [2023-11-29 05:50:22,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:50:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:50:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 306 transitions. [2023-11-29 05:50:22,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2023-11-29 05:50:22,008 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 306 transitions. [2023-11-29 05:50:22,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 306 transitions. [2023-11-29 05:50:22,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:50:22,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 306 transitions. [2023-11-29 05:50:22,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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 05:50:22,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:50:22,010 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:50:22,010 INFO L175 Difference]: Start difference. First operand has 90 places, 61 transitions, 304 flow. Second operand 6 states and 306 transitions. [2023-11-29 05:50:22,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 142 transitions, 971 flow [2023-11-29 05:50:22,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 142 transitions, 934 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-29 05:50:22,223 INFO L231 Difference]: Finished difference. Result has 95 places, 71 transitions, 469 flow [2023-11-29 05:50:22,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=95, PETRI_TRANSITIONS=71} [2023-11-29 05:50:22,224 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 26 predicate places. [2023-11-29 05:50:22,224 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 71 transitions, 469 flow [2023-11-29 05:50:22,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 05:50:22,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:50:22,224 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:50:22,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (27)] Ended with exit code 0 [2023-11-29 05:50:22,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:22,425 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:50:22,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:22,425 INFO L85 PathProgramCache]: Analyzing trace with hash -314700099, now seen corresponding path program 5 times [2023-11-29 05:50:22,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:22,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530509107] [2023-11-29 05:50:22,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:50:22,426 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 05:50:22,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:22,427 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:22,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (28)] Waiting until timeout for monitored process [2023-11-29 05:50:22,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 05:50:22,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:50:22,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:50:22,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:50:23,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:23,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:23,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530509107] [2023-11-29 05:50:23,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530509107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:23,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:23,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:50:23,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659157450] [2023-11-29 05:50:23,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:23,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:50:23,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:23,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:50:23,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:50:23,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:50:23,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 71 transitions, 469 flow. Second operand has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:50:23,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:50:23,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:50:23,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:50:29,901 INFO L124 PetriNetUnfolderBase]: 26334/43298 cut-off events. [2023-11-29 05:50:29,901 INFO L125 PetriNetUnfolderBase]: For 73960/74021 co-relation queries the response was YES. [2023-11-29 05:50:30,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128196 conditions, 43298 events. 26334/43298 cut-off events. For 73960/74021 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 365778 event pairs, 21360 based on Foata normal form. 10/43185 useless extension candidates. Maximal degree in co-relation 128166. Up to 25884 conditions per place. [2023-11-29 05:50:30,252 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 138 selfloop transitions, 23 changer transitions 7/180 dead transitions. [2023-11-29 05:50:30,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 180 transitions, 1534 flow [2023-11-29 05:50:30,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:50:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:50:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 354 transitions. [2023-11-29 05:50:30,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7224489795918367 [2023-11-29 05:50:30,254 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 354 transitions. [2023-11-29 05:50:30,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 354 transitions. [2023-11-29 05:50:30,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:50:30,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 354 transitions. [2023-11-29 05:50:30,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 50.57142857142857) internal successors, (354), 7 states have internal predecessors, (354), 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 05:50:30,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:50:30,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:50:30,255 INFO L175 Difference]: Start difference. First operand has 95 places, 71 transitions, 469 flow. Second operand 7 states and 354 transitions. [2023-11-29 05:50:30,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 180 transitions, 1534 flow [2023-11-29 05:50:30,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 180 transitions, 1492 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-29 05:50:30,389 INFO L231 Difference]: Finished difference. Result has 103 places, 85 transitions, 730 flow [2023-11-29 05:50:30,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=730, PETRI_PLACES=103, PETRI_TRANSITIONS=85} [2023-11-29 05:50:30,390 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 34 predicate places. [2023-11-29 05:50:30,390 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 85 transitions, 730 flow [2023-11-29 05:50:30,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:50:30,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:50:30,390 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:50:30,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (28)] Ended with exit code 0 [2023-11-29 05:50:30,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:30,591 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:50:30,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2009929633, now seen corresponding path program 6 times [2023-11-29 05:50:30,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:30,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694509411] [2023-11-29 05:50:30,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:50:30,592 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 05:50:30,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:30,593 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:30,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (29)] Waiting until timeout for monitored process [2023-11-29 05:50:30,744 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 05:50:30,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:50:30,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:50:30,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:50:31,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:31,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:31,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694509411] [2023-11-29 05:50:31,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694509411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:31,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:31,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:50:31,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952609050] [2023-11-29 05:50:31,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:31,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:50:31,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:31,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:50:31,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:50:31,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:50:31,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 85 transitions, 730 flow. Second operand has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:50:31,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:50:31,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:50:31,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:50:39,431 INFO L124 PetriNetUnfolderBase]: 28261/46456 cut-off events. [2023-11-29 05:50:39,431 INFO L125 PetriNetUnfolderBase]: For 121288/121329 co-relation queries the response was YES. [2023-11-29 05:50:39,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149892 conditions, 46456 events. 28261/46456 cut-off events. For 121288/121329 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 396111 event pairs, 22710 based on Foata normal form. 5/46361 useless extension candidates. Maximal degree in co-relation 149858. Up to 26058 conditions per place. [2023-11-29 05:50:39,817 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 160 selfloop transitions, 23 changer transitions 4/199 dead transitions. [2023-11-29 05:50:39,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 199 transitions, 2015 flow [2023-11-29 05:50:39,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:50:39,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:50:39,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 360 transitions. [2023-11-29 05:50:39,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7346938775510204 [2023-11-29 05:50:39,819 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 360 transitions. [2023-11-29 05:50:39,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 360 transitions. [2023-11-29 05:50:39,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:50:39,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 360 transitions. [2023-11-29 05:50:39,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 51.42857142857143) internal successors, (360), 7 states have internal predecessors, (360), 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 05:50:39,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:50:39,821 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:50:39,821 INFO L175 Difference]: Start difference. First operand has 103 places, 85 transitions, 730 flow. Second operand 7 states and 360 transitions. [2023-11-29 05:50:39,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 199 transitions, 2015 flow [2023-11-29 05:50:40,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 199 transitions, 1968 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-11-29 05:50:40,145 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 1039 flow [2023-11-29 05:50:40,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1039, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2023-11-29 05:50:40,146 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 42 predicate places. [2023-11-29 05:50:40,146 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 1039 flow [2023-11-29 05:50:40,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:50:40,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:50:40,146 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:50:40,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (29)] Ended with exit code 0 [2023-11-29 05:50:40,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:40,347 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:50:40,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2109448175, now seen corresponding path program 7 times [2023-11-29 05:50:40,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:40,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595025815] [2023-11-29 05:50:40,348 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:50:40,348 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 05:50:40,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:40,348 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:40,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (30)] Waiting until timeout for monitored process [2023-11-29 05:50:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:50:40,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:50:40,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:50:41,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:41,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:41,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595025815] [2023-11-29 05:50:41,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595025815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:41,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:41,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:50:41,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254216138] [2023-11-29 05:50:41,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:41,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:50:41,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:41,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:50:41,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:50:41,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:50:41,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 1039 flow. Second operand has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:50:41,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:50:41,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:50:41,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:50:49,147 INFO L124 PetriNetUnfolderBase]: 28257/46901 cut-off events. [2023-11-29 05:50:49,147 INFO L125 PetriNetUnfolderBase]: For 141174/141211 co-relation queries the response was YES. [2023-11-29 05:50:49,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155910 conditions, 46901 events. 28257/46901 cut-off events. For 141174/141211 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 408797 event pairs, 18301 based on Foata normal form. 8/46822 useless extension candidates. Maximal degree in co-relation 155872. Up to 26058 conditions per place. [2023-11-29 05:50:49,631 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 145 selfloop transitions, 26 changer transitions 3/186 dead transitions. [2023-11-29 05:50:49,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 186 transitions, 1933 flow [2023-11-29 05:50:49,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:50:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:50:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 352 transitions. [2023-11-29 05:50:49,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183673469387755 [2023-11-29 05:50:49,633 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 352 transitions. [2023-11-29 05:50:49,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 352 transitions. [2023-11-29 05:50:49,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:50:49,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 352 transitions. [2023-11-29 05:50:49,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 50.285714285714285) internal successors, (352), 7 states have internal predecessors, (352), 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 05:50:49,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:50:49,635 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:50:49,635 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 1039 flow. Second operand 7 states and 352 transitions. [2023-11-29 05:50:49,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 186 transitions, 1933 flow [2023-11-29 05:50:49,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 186 transitions, 1931 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-29 05:50:49,938 INFO L231 Difference]: Finished difference. Result has 120 places, 108 transitions, 1200 flow [2023-11-29 05:50:49,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1200, PETRI_PLACES=120, PETRI_TRANSITIONS=108} [2023-11-29 05:50:49,938 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 51 predicate places. [2023-11-29 05:50:49,939 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 108 transitions, 1200 flow [2023-11-29 05:50:49,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:50:49,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:50:49,939 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:50:49,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (30)] Ended with exit code 0 [2023-11-29 05:50:50,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:50,140 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:50:50,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:50:50,140 INFO L85 PathProgramCache]: Analyzing trace with hash 9214465, now seen corresponding path program 8 times [2023-11-29 05:50:50,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:50:50,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161687728] [2023-11-29 05:50:50,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:50:50,141 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 05:50:50,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:50:50,142 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:50:50,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (31)] Waiting until timeout for monitored process [2023-11-29 05:50:50,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:50:50,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:50:50,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:50:50,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:50:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:50:50,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:50:50,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:50:50,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161687728] [2023-11-29 05:50:50,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161687728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:50:50,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:50:50,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:50:50,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096126024] [2023-11-29 05:50:50,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:50:50,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:50:50,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:50:50,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:50:50,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:50:50,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:50:50,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 108 transitions, 1200 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 05:50:50,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:50:50,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:50:50,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:50:59,103 INFO L124 PetriNetUnfolderBase]: 28275/46092 cut-off events. [2023-11-29 05:50:59,103 INFO L125 PetriNetUnfolderBase]: For 161861/161960 co-relation queries the response was YES. [2023-11-29 05:50:59,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160832 conditions, 46092 events. 28275/46092 cut-off events. For 161861/161960 co-relation queries the response was YES. Maximal size of possible extension queue 1529. Compared 391199 event pairs, 18378 based on Foata normal form. 32/46009 useless extension candidates. Maximal degree in co-relation 160790. Up to 26960 conditions per place. [2023-11-29 05:50:59,520 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 121 selfloop transitions, 50 changer transitions 20/203 dead transitions. [2023-11-29 05:50:59,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 203 transitions, 2371 flow [2023-11-29 05:50:59,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:50:59,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:50:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2023-11-29 05:50:59,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7214285714285714 [2023-11-29 05:50:59,521 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 303 transitions. [2023-11-29 05:50:59,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 303 transitions. [2023-11-29 05:50:59,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:50:59,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 303 transitions. [2023-11-29 05:50:59,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 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 05:50:59,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:50:59,523 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:50:59,523 INFO L175 Difference]: Start difference. First operand has 120 places, 108 transitions, 1200 flow. Second operand 6 states and 303 transitions. [2023-11-29 05:50:59,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 203 transitions, 2371 flow [2023-11-29 05:50:59,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 203 transitions, 2283 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-29 05:50:59,823 INFO L231 Difference]: Finished difference. Result has 126 places, 123 transitions, 1562 flow [2023-11-29 05:50:59,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1562, PETRI_PLACES=126, PETRI_TRANSITIONS=123} [2023-11-29 05:50:59,823 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 57 predicate places. [2023-11-29 05:50:59,823 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 123 transitions, 1562 flow [2023-11-29 05:50:59,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 05:50:59,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:50:59,824 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:50:59,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (31)] Ended with exit code 0 [2023-11-29 05:51:00,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:51:00,025 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:51:00,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:00,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1823837461, now seen corresponding path program 9 times [2023-11-29 05:51:00,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:51:00,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392619956] [2023-11-29 05:51:00,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:51:00,029 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 05:51:00,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:51:00,032 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:51:00,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (32)] Waiting until timeout for monitored process [2023-11-29 05:51:00,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 05:51:00,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:51:00,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:51:00,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:51:00,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:51:00,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:51:00,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392619956] [2023-11-29 05:51:00,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392619956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:00,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:00,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:51:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336119170] [2023-11-29 05:51:00,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:00,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:51:00,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:51:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:51:00,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:51:00,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:51:00,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 123 transitions, 1562 flow. Second operand has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:51:00,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:51:00,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:51:00,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:51:09,273 INFO L124 PetriNetUnfolderBase]: 28182/46182 cut-off events. [2023-11-29 05:51:09,274 INFO L125 PetriNetUnfolderBase]: For 194520/194544 co-relation queries the response was YES. [2023-11-29 05:51:09,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166874 conditions, 46182 events. 28182/46182 cut-off events. For 194520/194544 co-relation queries the response was YES. Maximal size of possible extension queue 1535. Compared 396070 event pairs, 17981 based on Foata normal form. 5/46145 useless extension candidates. Maximal degree in co-relation 166828. Up to 26477 conditions per place. [2023-11-29 05:51:09,812 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 168 selfloop transitions, 41 changer transitions 4/225 dead transitions. [2023-11-29 05:51:09,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 225 transitions, 2930 flow [2023-11-29 05:51:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:51:09,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:51:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 354 transitions. [2023-11-29 05:51:09,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7224489795918367 [2023-11-29 05:51:09,813 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 354 transitions. [2023-11-29 05:51:09,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 354 transitions. [2023-11-29 05:51:09,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:51:09,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 354 transitions. [2023-11-29 05:51:09,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 50.57142857142857) internal successors, (354), 7 states have internal predecessors, (354), 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 05:51:09,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:51:09,816 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:51:09,816 INFO L175 Difference]: Start difference. First operand has 126 places, 123 transitions, 1562 flow. Second operand 7 states and 354 transitions. [2023-11-29 05:51:09,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 225 transitions, 2930 flow [2023-11-29 05:51:10,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 225 transitions, 2748 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-11-29 05:51:10,680 INFO L231 Difference]: Finished difference. Result has 133 places, 139 transitions, 1834 flow [2023-11-29 05:51:10,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1834, PETRI_PLACES=133, PETRI_TRANSITIONS=139} [2023-11-29 05:51:10,681 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 64 predicate places. [2023-11-29 05:51:10,681 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 139 transitions, 1834 flow [2023-11-29 05:51:10,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:51:10,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:51:10,681 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:10,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (32)] Ended with exit code 0 [2023-11-29 05:51:10,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:51:10,882 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:51:10,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1501515973, now seen corresponding path program 10 times [2023-11-29 05:51:10,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:51:10,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766111424] [2023-11-29 05:51:10,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:51:10,883 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 05:51:10,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:51:10,883 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:51:10,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (33)] Waiting until timeout for monitored process [2023-11-29 05:51:11,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:51:11,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:51:11,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:51:11,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:51:11,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:51:11,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:51:11,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766111424] [2023-11-29 05:51:11,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766111424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:11,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:11,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:51:11,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682207695] [2023-11-29 05:51:11,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:11,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:51:11,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:51:11,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:51:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:51:11,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:51:11,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 139 transitions, 1834 flow. Second operand has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:51:11,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:51:11,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:51:11,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:51:21,118 INFO L124 PetriNetUnfolderBase]: 28238/46040 cut-off events. [2023-11-29 05:51:21,118 INFO L125 PetriNetUnfolderBase]: For 216192/216285 co-relation queries the response was YES. [2023-11-29 05:51:21,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172806 conditions, 46040 events. 28238/46040 cut-off events. For 216192/216285 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 389962 event pairs, 18442 based on Foata normal form. 11/45893 useless extension candidates. Maximal degree in co-relation 172756. Up to 26960 conditions per place. [2023-11-29 05:51:21,766 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 156 selfloop transitions, 62 changer transitions 7/237 dead transitions. [2023-11-29 05:51:21,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 237 transitions, 3188 flow [2023-11-29 05:51:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:51:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:51:21,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 346 transitions. [2023-11-29 05:51:21,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7061224489795919 [2023-11-29 05:51:21,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 346 transitions. [2023-11-29 05:51:21,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 346 transitions. [2023-11-29 05:51:21,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:51:21,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 346 transitions. [2023-11-29 05:51:21,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 49.42857142857143) internal successors, (346), 7 states have internal predecessors, (346), 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 05:51:21,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:51:21,769 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:51:21,769 INFO L175 Difference]: Start difference. First operand has 133 places, 139 transitions, 1834 flow. Second operand 7 states and 346 transitions. [2023-11-29 05:51:21,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 237 transitions, 3188 flow [2023-11-29 05:51:22,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 237 transitions, 3090 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-11-29 05:51:22,631 INFO L231 Difference]: Finished difference. Result has 143 places, 160 transitions, 2281 flow [2023-11-29 05:51:22,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2281, PETRI_PLACES=143, PETRI_TRANSITIONS=160} [2023-11-29 05:51:22,631 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 74 predicate places. [2023-11-29 05:51:22,632 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 160 transitions, 2281 flow [2023-11-29 05:51:22,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:51:22,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:51:22,632 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:22,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (33)] Forceful destruction successful, exit code 0 [2023-11-29 05:51:22,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:51:22,832 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:51:22,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1992843609, now seen corresponding path program 11 times [2023-11-29 05:51:22,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:51:22,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039191620] [2023-11-29 05:51:22,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:51:22,834 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 05:51:22,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:51:22,834 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:51:22,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (34)] Waiting until timeout for monitored process [2023-11-29 05:51:23,017 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 05:51:23,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:51:23,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:51:23,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:23,521 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:51:23,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:51:23,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:51:23,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039191620] [2023-11-29 05:51:23,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039191620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:23,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:23,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:51:23,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193785577] [2023-11-29 05:51:23,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:23,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:51:23,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:51:23,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:51:23,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:51:23,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:51:23,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 160 transitions, 2281 flow. Second operand has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:51:23,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:51:23,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:51:23,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:51:33,435 INFO L124 PetriNetUnfolderBase]: 28229/46769 cut-off events. [2023-11-29 05:51:33,435 INFO L125 PetriNetUnfolderBase]: For 266926/266962 co-relation queries the response was YES. [2023-11-29 05:51:33,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182640 conditions, 46769 events. 28229/46769 cut-off events. For 266926/266962 co-relation queries the response was YES. Maximal size of possible extension queue 1548. Compared 405329 event pairs, 20231 based on Foata normal form. 8/46673 useless extension candidates. Maximal degree in co-relation 182585. Up to 26028 conditions per place. [2023-11-29 05:51:34,005 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 188 selfloop transitions, 34 changer transitions 4/238 dead transitions. [2023-11-29 05:51:34,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 238 transitions, 3227 flow [2023-11-29 05:51:34,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:51:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:51:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 355 transitions. [2023-11-29 05:51:34,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7244897959183674 [2023-11-29 05:51:34,007 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 355 transitions. [2023-11-29 05:51:34,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 355 transitions. [2023-11-29 05:51:34,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:51:34,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 355 transitions. [2023-11-29 05:51:34,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 50.714285714285715) internal successors, (355), 7 states have internal predecessors, (355), 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 05:51:34,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:51:34,008 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:51:34,008 INFO L175 Difference]: Start difference. First operand has 143 places, 160 transitions, 2281 flow. Second operand 7 states and 355 transitions. [2023-11-29 05:51:34,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 238 transitions, 3227 flow [2023-11-29 05:51:35,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 238 transitions, 3080 flow, removed 45 selfloop flow, removed 2 redundant places. [2023-11-29 05:51:35,204 INFO L231 Difference]: Finished difference. Result has 148 places, 162 transitions, 2280 flow [2023-11-29 05:51:35,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2280, PETRI_PLACES=148, PETRI_TRANSITIONS=162} [2023-11-29 05:51:35,205 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 79 predicate places. [2023-11-29 05:51:35,205 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 162 transitions, 2280 flow [2023-11-29 05:51:35,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.875) internal successors, (311), 8 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:51:35,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:51:35,205 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:35,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (34)] Ended with exit code 0 [2023-11-29 05:51:35,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:51:35,406 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:51:35,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:35,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2114082355, now seen corresponding path program 12 times [2023-11-29 05:51:35,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:51:35,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963728388] [2023-11-29 05:51:35,406 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:51:35,407 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 05:51:35,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:51:35,407 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:51:35,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (35)] Waiting until timeout for monitored process [2023-11-29 05:51:35,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 05:51:35,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:51:35,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:51:35,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:51:36,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:51:36,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:51:36,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963728388] [2023-11-29 05:51:36,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963728388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:36,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:36,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:51:36,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369770949] [2023-11-29 05:51:36,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:36,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:51:36,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:51:36,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:51:36,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:51:36,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:51:36,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 162 transitions, 2280 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 05:51:36,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:51:36,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:51:36,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:51:46,158 INFO L124 PetriNetUnfolderBase]: 28229/46332 cut-off events. [2023-11-29 05:51:46,158 INFO L125 PetriNetUnfolderBase]: For 274721/274768 co-relation queries the response was YES. [2023-11-29 05:51:46,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182900 conditions, 46332 events. 28229/46332 cut-off events. For 274721/274768 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 398178 event pairs, 17979 based on Foata normal form. 14/46237 useless extension candidates. Maximal degree in co-relation 182844. Up to 26552 conditions per place. [2023-11-29 05:51:46,707 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 138 selfloop transitions, 74 changer transitions 19/243 dead transitions. [2023-11-29 05:51:46,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 243 transitions, 3443 flow [2023-11-29 05:51:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:51:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:51:46,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2023-11-29 05:51:46,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7214285714285714 [2023-11-29 05:51:46,709 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 303 transitions. [2023-11-29 05:51:46,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 303 transitions. [2023-11-29 05:51:46,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:51:46,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 303 transitions. [2023-11-29 05:51:46,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 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 05:51:46,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:51:46,710 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:51:46,710 INFO L175 Difference]: Start difference. First operand has 148 places, 162 transitions, 2280 flow. Second operand 6 states and 303 transitions. [2023-11-29 05:51:46,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 243 transitions, 3443 flow [2023-11-29 05:51:47,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 243 transitions, 3339 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-29 05:51:47,653 INFO L231 Difference]: Finished difference. Result has 153 places, 170 transitions, 2534 flow [2023-11-29 05:51:47,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2534, PETRI_PLACES=153, PETRI_TRANSITIONS=170} [2023-11-29 05:51:47,653 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 84 predicate places. [2023-11-29 05:51:47,653 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 170 transitions, 2534 flow [2023-11-29 05:51:47,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 05:51:47,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:51:47,653 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:47,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (35)] Ended with exit code 0 [2023-11-29 05:51:47,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:51:47,854 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:51:47,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:47,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1897916627, now seen corresponding path program 13 times [2023-11-29 05:51:47,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:51:47,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602707565] [2023-11-29 05:51:47,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:51:47,855 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 05:51:47,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:51:47,856 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:51:47,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (36)] Waiting until timeout for monitored process [2023-11-29 05:51:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:48,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:51:48,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:51:48,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:51:48,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:51:48,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602707565] [2023-11-29 05:51:48,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602707565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:48,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:48,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:51:48,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182121317] [2023-11-29 05:51:48,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:48,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:51:48,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:51:48,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:51:48,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:51:48,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:51:48,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 170 transitions, 2534 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 05:51:48,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:51:48,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:51:48,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:51:57,314 INFO L124 PetriNetUnfolderBase]: 28445/46458 cut-off events. [2023-11-29 05:51:57,315 INFO L125 PetriNetUnfolderBase]: For 297499/297587 co-relation queries the response was YES. [2023-11-29 05:51:57,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188916 conditions, 46458 events. 28445/46458 cut-off events. For 297499/297587 co-relation queries the response was YES. Maximal size of possible extension queue 1543. Compared 396046 event pairs, 18605 based on Foata normal form. 22/46325 useless extension candidates. Maximal degree in co-relation 188858. Up to 26960 conditions per place. [2023-11-29 05:51:57,871 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 164 selfloop transitions, 72 changer transitions 20/268 dead transitions. [2023-11-29 05:51:57,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 268 transitions, 4108 flow [2023-11-29 05:51:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:51:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:51:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 298 transitions. [2023-11-29 05:51:57,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7095238095238096 [2023-11-29 05:51:57,872 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 298 transitions. [2023-11-29 05:51:57,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 298 transitions. [2023-11-29 05:51:57,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:51:57,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 298 transitions. [2023-11-29 05:51:57,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 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 05:51:57,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:51:57,874 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:51:57,874 INFO L175 Difference]: Start difference. First operand has 153 places, 170 transitions, 2534 flow. Second operand 6 states and 298 transitions. [2023-11-29 05:51:57,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 268 transitions, 4108 flow [2023-11-29 05:51:58,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 268 transitions, 3997 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-29 05:51:58,844 INFO L231 Difference]: Finished difference. Result has 158 places, 180 transitions, 2922 flow [2023-11-29 05:51:58,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2922, PETRI_PLACES=158, PETRI_TRANSITIONS=180} [2023-11-29 05:51:58,844 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 89 predicate places. [2023-11-29 05:51:58,845 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 180 transitions, 2922 flow [2023-11-29 05:51:58,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 05:51:58,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:51:58,845 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:51:58,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (36)] Ended with exit code 0 [2023-11-29 05:51:59,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:51:59,045 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:51:59,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2019429291, now seen corresponding path program 14 times [2023-11-29 05:51:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:51:59,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444551870] [2023-11-29 05:51:59,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:51:59,046 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 05:51:59,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:51:59,047 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:51:59,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (37)] Waiting until timeout for monitored process [2023-11-29 05:51:59,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:51:59,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:51:59,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:51:59,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:51:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:51:59,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:51:59,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:51:59,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444551870] [2023-11-29 05:51:59,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444551870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:59,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:59,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:51:59,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348148436] [2023-11-29 05:51:59,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:59,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:51:59,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:51:59,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:51:59,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:51:59,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:51:59,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 180 transitions, 2922 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 05:51:59,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:51:59,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:51:59,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:09,194 INFO L124 PetriNetUnfolderBase]: 28365/45998 cut-off events. [2023-11-29 05:52:09,195 INFO L125 PetriNetUnfolderBase]: For 343572/343617 co-relation queries the response was YES. [2023-11-29 05:52:09,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192890 conditions, 45998 events. 28365/45998 cut-off events. For 343572/343617 co-relation queries the response was YES. Maximal size of possible extension queue 1528. Compared 386399 event pairs, 18557 based on Foata normal form. 17/45913 useless extension candidates. Maximal degree in co-relation 192829. Up to 26960 conditions per place. [2023-11-29 05:52:09,774 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 144 selfloop transitions, 84 changer transitions 20/260 dead transitions. [2023-11-29 05:52:09,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 260 transitions, 4171 flow [2023-11-29 05:52:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:52:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:52:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 301 transitions. [2023-11-29 05:52:09,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2023-11-29 05:52:09,776 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 301 transitions. [2023-11-29 05:52:09,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 301 transitions. [2023-11-29 05:52:09,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:09,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 301 transitions. [2023-11-29 05:52:09,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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 05:52:09,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:52:09,777 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 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 05:52:09,777 INFO L175 Difference]: Start difference. First operand has 158 places, 180 transitions, 2922 flow. Second operand 6 states and 301 transitions. [2023-11-29 05:52:09,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 260 transitions, 4171 flow [2023-11-29 05:52:11,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 260 transitions, 4102 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-29 05:52:11,134 INFO L231 Difference]: Finished difference. Result has 163 places, 191 transitions, 3319 flow [2023-11-29 05:52:11,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3319, PETRI_PLACES=163, PETRI_TRANSITIONS=191} [2023-11-29 05:52:11,135 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 94 predicate places. [2023-11-29 05:52:11,135 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 191 transitions, 3319 flow [2023-11-29 05:52:11,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 05:52:11,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:11,135 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:11,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (37)] Ended with exit code 0 [2023-11-29 05:52:11,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:52:11,336 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:52:11,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:11,336 INFO L85 PathProgramCache]: Analyzing trace with hash 678654930, now seen corresponding path program 1 times [2023-11-29 05:52:11,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:52:11,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451452575] [2023-11-29 05:52:11,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:11,336 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 05:52:11,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:52:11,337 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:52:11,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (38)] Waiting until timeout for monitored process [2023-11-29 05:52:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:11,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:52:11,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:52:11,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:52:11,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:52:11,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451452575] [2023-11-29 05:52:11,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451452575] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:11,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:52:11,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2023-11-29 05:52:11,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575018786] [2023-11-29 05:52:11,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:11,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:52:11,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:52:11,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:52:11,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:52:11,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:52:11,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 191 transitions, 3319 flow. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:52:11,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:11,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:52:11,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:23,413 INFO L124 PetriNetUnfolderBase]: 32630/52616 cut-off events. [2023-11-29 05:52:23,413 INFO L125 PetriNetUnfolderBase]: For 368781/368793 co-relation queries the response was YES. [2023-11-29 05:52:23,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214838 conditions, 52616 events. 32630/52616 cut-off events. For 368781/368793 co-relation queries the response was YES. Maximal size of possible extension queue 1805. Compared 442786 event pairs, 2654 based on Foata normal form. 39/52621 useless extension candidates. Maximal degree in co-relation 214775. Up to 19163 conditions per place. [2023-11-29 05:52:24,191 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 350 selfloop transitions, 223 changer transitions 8/593 dead transitions. [2023-11-29 05:52:24,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 593 transitions, 10139 flow [2023-11-29 05:52:24,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:52:24,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 05:52:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 711 transitions. [2023-11-29 05:52:24,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6771428571428572 [2023-11-29 05:52:24,193 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 711 transitions. [2023-11-29 05:52:24,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 711 transitions. [2023-11-29 05:52:24,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:24,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 711 transitions. [2023-11-29 05:52:24,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 47.4) internal successors, (711), 15 states have internal predecessors, (711), 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 05:52:24,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 70.0) internal successors, (1120), 16 states have internal predecessors, (1120), 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 05:52:24,196 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 70.0) internal successors, (1120), 16 states have internal predecessors, (1120), 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 05:52:24,196 INFO L175 Difference]: Start difference. First operand has 163 places, 191 transitions, 3319 flow. Second operand 15 states and 711 transitions. [2023-11-29 05:52:24,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 593 transitions, 10139 flow [2023-11-29 05:52:26,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 593 transitions, 9657 flow, removed 98 selfloop flow, removed 3 redundant places. [2023-11-29 05:52:26,845 INFO L231 Difference]: Finished difference. Result has 183 places, 351 transitions, 6416 flow [2023-11-29 05:52:26,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=3128, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6416, PETRI_PLACES=183, PETRI_TRANSITIONS=351} [2023-11-29 05:52:26,846 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 114 predicate places. [2023-11-29 05:52:26,846 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 351 transitions, 6416 flow [2023-11-29 05:52:26,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:52:26,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:26,846 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:26,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (38)] Ended with exit code 0 [2023-11-29 05:52:27,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:52:27,047 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:52:27,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:27,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1346925602, now seen corresponding path program 2 times [2023-11-29 05:52:27,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:52:27,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806266576] [2023-11-29 05:52:27,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:52:27,048 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 05:52:27,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:52:27,049 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:52:27,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (39)] Waiting until timeout for monitored process [2023-11-29 05:52:27,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:52:27,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:52:27,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:52:27,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:52:27,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:52:27,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:52:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806266576] [2023-11-29 05:52:27,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806266576] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:27,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:52:27,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-11-29 05:52:27,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927648216] [2023-11-29 05:52:27,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:27,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:52:27,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:52:27,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:52:27,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:52:27,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:52:27,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 351 transitions, 6416 flow. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:52:27,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:27,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:52:27,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:42,742 INFO L124 PetriNetUnfolderBase]: 34270/55509 cut-off events. [2023-11-29 05:52:42,742 INFO L125 PetriNetUnfolderBase]: For 499902/500102 co-relation queries the response was YES. [2023-11-29 05:52:43,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254732 conditions, 55509 events. 34270/55509 cut-off events. For 499902/500102 co-relation queries the response was YES. Maximal size of possible extension queue 2016. Compared 473732 event pairs, 12486 based on Foata normal form. 48/55418 useless extension candidates. Maximal degree in co-relation 254660. Up to 18021 conditions per place. [2023-11-29 05:52:43,617 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 288 selfloop transitions, 263 changer transitions 2/565 dead transitions. [2023-11-29 05:52:43,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 565 transitions, 9840 flow [2023-11-29 05:52:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:52:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:52:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 496 transitions. [2023-11-29 05:52:43,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7085714285714285 [2023-11-29 05:52:43,619 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 496 transitions. [2023-11-29 05:52:43,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 496 transitions. [2023-11-29 05:52:43,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:43,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 496 transitions. [2023-11-29 05:52:43,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 49.6) internal successors, (496), 10 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:43,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 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 05:52:43,621 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 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 05:52:43,621 INFO L175 Difference]: Start difference. First operand has 183 places, 351 transitions, 6416 flow. Second operand 10 states and 496 transitions. [2023-11-29 05:52:43,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 565 transitions, 9840 flow [2023-11-29 05:52:50,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 565 transitions, 9444 flow, removed 198 selfloop flow, removed 0 redundant places. [2023-11-29 05:52:50,986 INFO L231 Difference]: Finished difference. Result has 197 places, 409 transitions, 7525 flow [2023-11-29 05:52:50,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=6088, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7525, PETRI_PLACES=197, PETRI_TRANSITIONS=409} [2023-11-29 05:52:50,987 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 128 predicate places. [2023-11-29 05:52:50,987 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 409 transitions, 7525 flow [2023-11-29 05:52:50,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:52:50,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:50,987 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:50,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (39)] Ended with exit code 0 [2023-11-29 05:52:51,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:52:51,188 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:52:51,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:51,188 INFO L85 PathProgramCache]: Analyzing trace with hash -421150960, now seen corresponding path program 3 times [2023-11-29 05:52:51,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:52:51,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935251190] [2023-11-29 05:52:51,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:52:51,189 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 05:52:51,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:52:51,189 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:52:51,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (40)] Waiting until timeout for monitored process [2023-11-29 05:52:51,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:52:51,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:52:51,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:52:51,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:52:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:52:51,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:52:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:52:51,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:52:51,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935251190] [2023-11-29 05:52:51,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935251190] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:52:51,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:52:51,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-11-29 05:52:51,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121221737] [2023-11-29 05:52:51,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:51,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:52:51,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:52:51,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:52:51,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:52:52,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:52:52,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 409 transitions, 7525 flow. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:52:52,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:52,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:52:52,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:53:10,484 INFO L124 PetriNetUnfolderBase]: 39665/65045 cut-off events. [2023-11-29 05:53:10,485 INFO L125 PetriNetUnfolderBase]: For 611745/611950 co-relation queries the response was YES. [2023-11-29 05:53:11,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308144 conditions, 65045 events. 39665/65045 cut-off events. For 611745/611950 co-relation queries the response was YES. Maximal size of possible extension queue 2477. Compared 576978 event pairs, 12710 based on Foata normal form. 67/64934 useless extension candidates. Maximal degree in co-relation 308067. Up to 18021 conditions per place. [2023-11-29 05:53:11,450 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 364 selfloop transitions, 311 changer transitions 4/691 dead transitions. [2023-11-29 05:53:11,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 691 transitions, 12611 flow [2023-11-29 05:53:11,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:53:11,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:53:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 557 transitions. [2023-11-29 05:53:11,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7233766233766233 [2023-11-29 05:53:11,452 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 557 transitions. [2023-11-29 05:53:11,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 557 transitions. [2023-11-29 05:53:11,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:53:11,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 557 transitions. [2023-11-29 05:53:11,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 50.63636363636363) internal successors, (557), 11 states have internal predecessors, (557), 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 05:53:11,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 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 05:53:11,454 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 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 05:53:11,454 INFO L175 Difference]: Start difference. First operand has 197 places, 409 transitions, 7525 flow. Second operand 11 states and 557 transitions. [2023-11-29 05:53:11,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 691 transitions, 12611 flow [2023-11-29 05:53:24,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 691 transitions, 12105 flow, removed 121 selfloop flow, removed 2 redundant places. [2023-11-29 05:53:24,663 INFO L231 Difference]: Finished difference. Result has 213 places, 479 transitions, 9495 flow [2023-11-29 05:53:24,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=7145, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9495, PETRI_PLACES=213, PETRI_TRANSITIONS=479} [2023-11-29 05:53:24,663 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 144 predicate places. [2023-11-29 05:53:24,663 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 479 transitions, 9495 flow [2023-11-29 05:53:24,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:53:24,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:53:24,664 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:24,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (40)] Ended with exit code 0 [2023-11-29 05:53:24,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:53:24,864 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:53:24,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:53:24,864 INFO L85 PathProgramCache]: Analyzing trace with hash 192508892, now seen corresponding path program 4 times [2023-11-29 05:53:24,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:53:24,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776507899] [2023-11-29 05:53:24,865 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:53:24,865 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 05:53:24,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:53:24,866 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:53:24,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (41)] Waiting until timeout for monitored process [2023-11-29 05:53:25,073 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:53:25,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:53:25,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:53:25,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:53:25,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:53:25,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:53:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:53:25,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:53:25,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776507899] [2023-11-29 05:53:25,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776507899] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:53:25,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:53:25,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2023-11-29 05:53:25,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142305664] [2023-11-29 05:53:25,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:53:25,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:53:25,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:53:25,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:53:25,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:53:25,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:53:25,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 479 transitions, 9495 flow. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:53:25,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:53:25,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:53:25,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:53:44,109 INFO L124 PetriNetUnfolderBase]: 39670/65046 cut-off events. [2023-11-29 05:53:44,109 INFO L125 PetriNetUnfolderBase]: For 674816/675083 co-relation queries the response was YES. [2023-11-29 05:53:44,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319657 conditions, 65046 events. 39670/65046 cut-off events. For 674816/675083 co-relation queries the response was YES. Maximal size of possible extension queue 2486. Compared 577272 event pairs, 13539 based on Foata normal form. 86/64984 useless extension candidates. Maximal degree in co-relation 319571. Up to 18021 conditions per place. [2023-11-29 05:53:45,260 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 301 selfloop transitions, 326 changer transitions 3/642 dead transitions. [2023-11-29 05:53:45,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 642 transitions, 12381 flow [2023-11-29 05:53:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:53:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:53:45,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 539 transitions. [2023-11-29 05:53:45,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-29 05:53:45,262 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 539 transitions. [2023-11-29 05:53:45,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 539 transitions. [2023-11-29 05:53:45,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:53:45,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 539 transitions. [2023-11-29 05:53:45,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:45,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 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 05:53:45,265 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 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 05:53:45,265 INFO L175 Difference]: Start difference. First operand has 213 places, 479 transitions, 9495 flow. Second operand 11 states and 539 transitions. [2023-11-29 05:53:45,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 642 transitions, 12381 flow [2023-11-29 05:53:58,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 642 transitions, 12278 flow, removed 25 selfloop flow, removed 1 redundant places. [2023-11-29 05:53:58,043 INFO L231 Difference]: Finished difference. Result has 226 places, 481 transitions, 10148 flow [2023-11-29 05:53:58,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=9376, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10148, PETRI_PLACES=226, PETRI_TRANSITIONS=481} [2023-11-29 05:53:58,044 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 157 predicate places. [2023-11-29 05:53:58,044 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 481 transitions, 10148 flow [2023-11-29 05:53:58,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:53:58,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:53:58,044 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:58,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (41)] Forceful destruction successful, exit code 0 [2023-11-29 05:53:58,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:53:58,245 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:53:58,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:53:58,245 INFO L85 PathProgramCache]: Analyzing trace with hash -67554424, now seen corresponding path program 5 times [2023-11-29 05:53:58,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:53:58,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900936250] [2023-11-29 05:53:58,245 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:53:58,246 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 05:53:58,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:53:58,246 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:53:58,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (42)] Waiting until timeout for monitored process [2023-11-29 05:53:58,445 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 05:53:58,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:53:58,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:53:58,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:53:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:53:58,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:53:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:53:58,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:53:58,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900936250] [2023-11-29 05:53:58,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900936250] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:53:58,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:53:58,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-11-29 05:53:58,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253932373] [2023-11-29 05:53:58,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:53:58,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:53:58,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:53:58,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:53:58,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:53:58,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:53:58,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 481 transitions, 10148 flow. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:53:58,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:53:58,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:53:58,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:16,531 INFO L124 PetriNetUnfolderBase]: 39624/65382 cut-off events. [2023-11-29 05:54:16,531 INFO L125 PetriNetUnfolderBase]: For 706269/706460 co-relation queries the response was YES. [2023-11-29 05:54:17,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329773 conditions, 65382 events. 39624/65382 cut-off events. For 706269/706460 co-relation queries the response was YES. Maximal size of possible extension queue 2492. Compared 585968 event pairs, 11920 based on Foata normal form. 67/65326 useless extension candidates. Maximal degree in co-relation 329682. Up to 18021 conditions per place. [2023-11-29 05:54:17,753 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 274 selfloop transitions, 336 changer transitions 3/625 dead transitions. [2023-11-29 05:54:17,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 625 transitions, 12877 flow [2023-11-29 05:54:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:54:17,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:54:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 447 transitions. [2023-11-29 05:54:17,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7095238095238096 [2023-11-29 05:54:17,755 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 447 transitions. [2023-11-29 05:54:17,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 447 transitions. [2023-11-29 05:54:17,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:17,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 447 transitions. [2023-11-29 05:54:17,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 49.666666666666664) internal successors, (447), 9 states have internal predecessors, (447), 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 05:54:17,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:17,756 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:17,757 INFO L175 Difference]: Start difference. First operand has 226 places, 481 transitions, 10148 flow. Second operand 9 states and 447 transitions. [2023-11-29 05:54:17,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 625 transitions, 12877 flow [2023-11-29 05:54:33,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 625 transitions, 12447 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-29 05:54:33,303 INFO L231 Difference]: Finished difference. Result has 231 places, 489 transitions, 10791 flow [2023-11-29 05:54:33,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=9734, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10791, PETRI_PLACES=231, PETRI_TRANSITIONS=489} [2023-11-29 05:54:33,303 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 162 predicate places. [2023-11-29 05:54:33,303 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 489 transitions, 10791 flow [2023-11-29 05:54:33,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:54:33,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:33,304 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:33,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (42)] Ended with exit code 0 [2023-11-29 05:54:33,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:54:33,504 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:54:33,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:33,504 INFO L85 PathProgramCache]: Analyzing trace with hash 429680474, now seen corresponding path program 6 times [2023-11-29 05:54:33,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:54:33,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242884550] [2023-11-29 05:54:33,505 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:54:33,505 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 05:54:33,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:54:33,506 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:54:33,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (43)] Waiting until timeout for monitored process [2023-11-29 05:54:33,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 05:54:33,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:54:33,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:54:33,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:54:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:54:33,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:54:33,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:54:33,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242884550] [2023-11-29 05:54:33,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242884550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:33,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:33,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:54:33,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761670013] [2023-11-29 05:54:33,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:33,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:54:33,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:54:33,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:54:33,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:54:33,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:54:33,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 489 transitions, 10791 flow. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:54:33,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:33,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:54:33,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:51,970 INFO L124 PetriNetUnfolderBase]: 39600/66169 cut-off events. [2023-11-29 05:54:51,970 INFO L125 PetriNetUnfolderBase]: For 803865/804075 co-relation queries the response was YES. [2023-11-29 05:54:52,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336651 conditions, 66169 events. 39600/66169 cut-off events. For 803865/804075 co-relation queries the response was YES. Maximal size of possible extension queue 2501. Compared 605043 event pairs, 17504 based on Foata normal form. 27/66060 useless extension candidates. Maximal degree in co-relation 336558. Up to 26078 conditions per place. [2023-11-29 05:54:53,181 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 422 selfloop transitions, 131 changer transitions 5/570 dead transitions. [2023-11-29 05:54:53,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 570 transitions, 12549 flow [2023-11-29 05:54:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:54:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:54:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 348 transitions. [2023-11-29 05:54:53,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.710204081632653 [2023-11-29 05:54:53,182 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 348 transitions. [2023-11-29 05:54:53,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 348 transitions. [2023-11-29 05:54:53,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:53,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 348 transitions. [2023-11-29 05:54:53,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 49.714285714285715) internal successors, (348), 7 states have internal predecessors, (348), 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 05:54:53,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:54:53,184 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:54:53,184 INFO L175 Difference]: Start difference. First operand has 231 places, 489 transitions, 10791 flow. Second operand 7 states and 348 transitions. [2023-11-29 05:54:53,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 570 transitions, 12549 flow [2023-11-29 05:55:08,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 570 transitions, 11996 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-29 05:55:08,185 INFO L231 Difference]: Finished difference. Result has 232 places, 487 transitions, 10474 flow [2023-11-29 05:55:08,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=10228, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10474, PETRI_PLACES=232, PETRI_TRANSITIONS=487} [2023-11-29 05:55:08,186 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 163 predicate places. [2023-11-29 05:55:08,186 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 487 transitions, 10474 flow [2023-11-29 05:55:08,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:55:08,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:55:08,186 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:55:08,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (43)] Ended with exit code 0 [2023-11-29 05:55:08,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:55:08,387 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:55:08,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:55:08,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1025085571, now seen corresponding path program 1 times [2023-11-29 05:55:08,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:55:08,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278466685] [2023-11-29 05:55:08,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:55:08,388 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 05:55:08,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:55:08,389 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:55:08,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (44)] Waiting until timeout for monitored process [2023-11-29 05:55:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:08,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:55:08,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:55:08,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:55:08,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:55:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:55:08,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:55:08,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278466685] [2023-11-29 05:55:08,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278466685] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:55:08,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:55:08,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2023-11-29 05:55:08,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022573295] [2023-11-29 05:55:08,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:55:08,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:55:08,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:55:08,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:55:08,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:55:08,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:55:08,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 487 transitions, 10474 flow. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:55:08,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:55:08,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:55:08,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:55:32,174 INFO L124 PetriNetUnfolderBase]: 49506/81723 cut-off events. [2023-11-29 05:55:32,174 INFO L125 PetriNetUnfolderBase]: For 928912/929062 co-relation queries the response was YES. [2023-11-29 05:55:33,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405510 conditions, 81723 events. 49506/81723 cut-off events. For 928912/929062 co-relation queries the response was YES. Maximal size of possible extension queue 3238. Compared 757548 event pairs, 4408 based on Foata normal form. 55/81724 useless extension candidates. Maximal degree in co-relation 405416. Up to 26236 conditions per place. [2023-11-29 05:55:33,894 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 653 selfloop transitions, 417 changer transitions 5/1087 dead transitions. [2023-11-29 05:55:33,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 1087 transitions, 22692 flow [2023-11-29 05:55:33,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:55:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 05:55:33,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 703 transitions. [2023-11-29 05:55:33,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6695238095238095 [2023-11-29 05:55:33,896 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 703 transitions. [2023-11-29 05:55:33,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 703 transitions. [2023-11-29 05:55:33,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:55:33,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 703 transitions. [2023-11-29 05:55:33,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 46.86666666666667) internal successors, (703), 15 states have internal predecessors, (703), 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 05:55:33,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 70.0) internal successors, (1120), 16 states have internal predecessors, (1120), 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 05:55:33,900 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 70.0) internal successors, (1120), 16 states have internal predecessors, (1120), 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 05:55:33,900 INFO L175 Difference]: Start difference. First operand has 232 places, 487 transitions, 10474 flow. Second operand 15 states and 703 transitions. [2023-11-29 05:55:33,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 1087 transitions, 22692 flow [2023-11-29 05:56:07,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 1087 transitions, 22212 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-29 05:56:07,273 INFO L231 Difference]: Finished difference. Result has 249 places, 762 transitions, 16530 flow [2023-11-29 05:56:07,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=10204, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16530, PETRI_PLACES=249, PETRI_TRANSITIONS=762} [2023-11-29 05:56:07,274 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 180 predicate places. [2023-11-29 05:56:07,274 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 762 transitions, 16530 flow [2023-11-29 05:56:07,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:56:07,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:56:07,274 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:56:07,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (44)] Ended with exit code 0 [2023-11-29 05:56:07,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:56:07,475 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:56:07,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:56:07,475 INFO L85 PathProgramCache]: Analyzing trace with hash -519036231, now seen corresponding path program 2 times [2023-11-29 05:56:07,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:56:07,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686592252] [2023-11-29 05:56:07,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:56:07,476 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 05:56:07,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:56:07,477 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:56:07,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (45)] Waiting until timeout for monitored process [2023-11-29 05:56:07,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:56:07,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:56:07,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:56:07,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:56:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:56:07,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:56:07,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:56:07,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686592252] [2023-11-29 05:56:07,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686592252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:56:07,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:56:07,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:56:07,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109849547] [2023-11-29 05:56:07,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:56:07,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:56:07,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:56:07,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:56:07,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:56:07,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:56:07,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 762 transitions, 16530 flow. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:56:07,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:56:07,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:56:07,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:56:35,691 INFO L124 PetriNetUnfolderBase]: 49507/83376 cut-off events. [2023-11-29 05:56:35,691 INFO L125 PetriNetUnfolderBase]: For 1188668/1188976 co-relation queries the response was YES. [2023-11-29 05:56:37,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445712 conditions, 83376 events. 49507/83376 cut-off events. For 1188668/1188976 co-relation queries the response was YES. Maximal size of possible extension queue 3279. Compared 795931 event pairs, 17778 based on Foata normal form. 168/83424 useless extension candidates. Maximal degree in co-relation 445609. Up to 26078 conditions per place. [2023-11-29 05:56:37,621 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 694 selfloop transitions, 174 changer transitions 1/881 dead transitions. [2023-11-29 05:56:37,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 881 transitions, 19533 flow [2023-11-29 05:56:37,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:56:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:56:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 353 transitions. [2023-11-29 05:56:37,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7204081632653061 [2023-11-29 05:56:37,622 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 353 transitions. [2023-11-29 05:56:37,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 353 transitions. [2023-11-29 05:56:37,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:56:37,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 353 transitions. [2023-11-29 05:56:37,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 50.42857142857143) internal successors, (353), 7 states have internal predecessors, (353), 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 05:56:37,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:56:37,624 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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 05:56:37,624 INFO L175 Difference]: Start difference. First operand has 249 places, 762 transitions, 16530 flow. Second operand 7 states and 353 transitions. [2023-11-29 05:56:37,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 881 transitions, 19533 flow [2023-11-29 05:57:18,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 881 transitions, 19033 flow, removed 250 selfloop flow, removed 0 redundant places. [2023-11-29 05:57:18,399 INFO L231 Difference]: Finished difference. Result has 256 places, 762 transitions, 16513 flow [2023-11-29 05:57:18,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=16160, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16513, PETRI_PLACES=256, PETRI_TRANSITIONS=762} [2023-11-29 05:57:18,400 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 187 predicate places. [2023-11-29 05:57:18,400 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 762 transitions, 16513 flow [2023-11-29 05:57:18,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:57:18,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:57:18,400 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:57:18,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (45)] Ended with exit code 0 [2023-11-29 05:57:18,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:57:18,601 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:57:18,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:57:18,601 INFO L85 PathProgramCache]: Analyzing trace with hash -955191413, now seen corresponding path program 3 times [2023-11-29 05:57:18,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:57:18,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644001557] [2023-11-29 05:57:18,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:57:18,601 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 05:57:18,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:57:18,602 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:57:18,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (46)] Waiting until timeout for monitored process [2023-11-29 05:57:18,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:57:18,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:57:18,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:57:18,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:57:19,075 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:57:19,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:57:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:57:19,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:57:19,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644001557] [2023-11-29 05:57:19,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644001557] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:57:19,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:57:19,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-11-29 05:57:19,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851241264] [2023-11-29 05:57:19,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:57:19,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:57:19,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:57:19,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:57:19,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:57:19,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:57:19,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 762 transitions, 16513 flow. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:57:19,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:57:19,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:57:19,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:57:54,933 INFO L124 PetriNetUnfolderBase]: 62506/105739 cut-off events. [2023-11-29 05:57:54,934 INFO L125 PetriNetUnfolderBase]: For 1364604/1365024 co-relation queries the response was YES. [2023-11-29 05:57:56,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541682 conditions, 105739 events. 62506/105739 cut-off events. For 1364604/1365024 co-relation queries the response was YES. Maximal size of possible extension queue 4463. Compared 1044616 event pairs, 15613 based on Foata normal form. 63/105516 useless extension candidates. Maximal degree in co-relation 541577. Up to 27182 conditions per place. [2023-11-29 05:57:57,245 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 744 selfloop transitions, 506 changer transitions 5/1267 dead transitions. [2023-11-29 05:57:57,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 1267 transitions, 28082 flow [2023-11-29 05:57:57,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:57:57,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 05:57:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 554 transitions. [2023-11-29 05:57:57,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7194805194805195 [2023-11-29 05:57:57,247 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 554 transitions. [2023-11-29 05:57:57,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 554 transitions. [2023-11-29 05:57:57,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:57:57,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 554 transitions. [2023-11-29 05:57:57,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 50.36363636363637) internal successors, (554), 11 states have internal predecessors, (554), 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 05:57:57,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 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 05:57:57,249 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 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 05:57:57,249 INFO L175 Difference]: Start difference. First operand has 256 places, 762 transitions, 16513 flow. Second operand 11 states and 554 transitions. [2023-11-29 05:57:57,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 1267 transitions, 28082 flow [2023-11-29 05:58:57,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 1267 transitions, 27615 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 05:58:57,171 INFO L231 Difference]: Finished difference. Result has 270 places, 921 transitions, 21113 flow [2023-11-29 05:58:57,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=16172, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21113, PETRI_PLACES=270, PETRI_TRANSITIONS=921} [2023-11-29 05:58:57,172 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 201 predicate places. [2023-11-29 05:58:57,172 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 921 transitions, 21113 flow [2023-11-29 05:58:57,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:58:57,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:58:57,172 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:58:57,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (46)] Ended with exit code 0 [2023-11-29 05:58:57,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:58:57,373 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 05:58:57,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:58:57,373 INFO L85 PathProgramCache]: Analyzing trace with hash -62195687, now seen corresponding path program 4 times [2023-11-29 05:58:57,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:58:57,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716506073] [2023-11-29 05:58:57,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:58:57,374 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 05:58:57,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:58:57,375 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 05:58:57,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (47)] Waiting until timeout for monitored process [2023-11-29 05:58:57,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:58:57,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:58:57,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:58:57,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:58:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:58:57,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:58:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:58:57,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:58:57,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716506073] [2023-11-29 05:58:57,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716506073] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:58:57,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:58:57,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-11-29 05:58:57,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223921287] [2023-11-29 05:58:57,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:58:57,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:58:57,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:58:57,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:58:57,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:58:58,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 05:58:58,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 921 transitions, 21113 flow. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 05:58:58,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:58:58,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 05:58:58,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:59:39,404 INFO L124 PetriNetUnfolderBase]: 62599/105771 cut-off events. [2023-11-29 05:59:39,404 INFO L125 PetriNetUnfolderBase]: For 1605825/1606278 co-relation queries the response was YES. [2023-11-29 05:59:41,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577666 conditions, 105771 events. 62599/105771 cut-off events. For 1605825/1606278 co-relation queries the response was YES. Maximal size of possible extension queue 4463. Compared 1043648 event pairs, 18552 based on Foata normal form. 157/105713 useless extension candidates. Maximal degree in co-relation 577553. Up to 30237 conditions per place. [2023-11-29 05:59:41,870 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 588 selfloop transitions, 507 changer transitions 7/1114 dead transitions. [2023-11-29 05:59:41,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1114 transitions, 26233 flow [2023-11-29 05:59:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:59:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:59:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 450 transitions. [2023-11-29 05:59:41,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 05:59:41,871 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 450 transitions. [2023-11-29 05:59:41,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 450 transitions. [2023-11-29 05:59:41,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:59:41,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 450 transitions. [2023-11-29 05:59:41,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:41,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:41,873 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:59:41,873 INFO L175 Difference]: Start difference. First operand has 270 places, 921 transitions, 21113 flow. Second operand 9 states and 450 transitions. [2023-11-29 05:59:41,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1114 transitions, 26233 flow [2023-11-29 06:00:47,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 1114 transitions, 25696 flow, removed 115 selfloop flow, removed 3 redundant places. [2023-11-29 06:00:47,486 INFO L231 Difference]: Finished difference. Result has 277 places, 970 transitions, 22787 flow [2023-11-29 06:00:47,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=20579, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=920, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=456, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22787, PETRI_PLACES=277, PETRI_TRANSITIONS=970} [2023-11-29 06:00:47,487 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 208 predicate places. [2023-11-29 06:00:47,487 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 970 transitions, 22787 flow [2023-11-29 06:00:47,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 06:00:47,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:47,487 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:00:47,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (47)] Ended with exit code 0 [2023-11-29 06:00:47,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 06:00:47,687 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-29 06:00:47,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:47,688 INFO L85 PathProgramCache]: Analyzing trace with hash -524720457, now seen corresponding path program 5 times [2023-11-29 06:00:47,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:00:47,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599206466] [2023-11-29 06:00:47,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:00:47,688 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 06:00:47,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:00:47,689 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 06:00:47,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79cc8b1e-68cf-4cae-b89a-0449c9bc7022/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 (48)] Waiting until timeout for monitored process [2023-11-29 06:00:47,917 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 06:00:47,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:00:47,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:00:47,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:00:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 06:00:48,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:00:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 06:00:48,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:00:48,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599206466] [2023-11-29 06:00:48,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599206466] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:00:48,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:00:48,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2023-11-29 06:00:48,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889715531] [2023-11-29 06:00:48,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:00:48,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:00:48,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:00:48,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:00:48,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:00:48,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2023-11-29 06:00:48,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 970 transitions, 22787 flow. Second operand has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 06:00:48,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:48,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2023-11-29 06:00:48,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand