./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu --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 e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:30,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:30,418 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:39:30,426 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:30,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:30,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:30,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:30,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:30,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:30,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:30,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:30,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:30,467 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:30,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:30,468 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:30,469 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:30,470 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:30,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:30,471 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:39:30,472 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:39:30,473 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:39:30,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:30,474 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:39:30,475 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:39:30,476 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:30,476 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:30,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:30,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:30,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:30,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:30,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:30,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:30,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:39:30,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:39:30,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:30,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:30,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:30,491 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:30,491 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_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 [2023-11-19 07:39:30,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:30,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:30,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:30,940 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:30,941 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:30,943 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2023-11-19 07:39:34,806 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:35,135 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:35,136 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2023-11-19 07:39:35,150 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/data/5dbf445ac/b25e92074a524455ae4d835be5b87f4e/FLAG622666f15 [2023-11-19 07:39:35,175 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/data/5dbf445ac/b25e92074a524455ae4d835be5b87f4e [2023-11-19 07:39:35,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:35,180 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:35,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:35,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:35,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:35,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:35" (1/1) ... [2023-11-19 07:39:35,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4e4062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:35, skipping insertion in model container [2023-11-19 07:39:35,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:35" (1/1) ... [2023-11-19 07:39:35,226 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:35,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:35,462 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) [2023-11-19 07:39:35,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@537a9ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:35, skipping insertion in model container [2023-11-19 07:39:35,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:35,463 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:39:35,466 INFO L158 Benchmark]: Toolchain (without parser) took 284.74ms. Allocated memory is still 138.4MB. Free memory was 98.1MB in the beginning and 88.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:39:35,467 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 138.4MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:39:35,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.34ms. Allocated memory is still 138.4MB. Free memory was 97.6MB in the beginning and 88.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:39:35,469 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 138.4MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.34ms. Allocated memory is still 138.4MB. Free memory was 97.6MB in the beginning and 88.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 112]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu --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 e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:38,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:38,402 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:39:38,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:38,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:38,451 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:38,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:38,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:38,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:38,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:38,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:38,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:38,461 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:38,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:38,464 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:38,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:38,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:38,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:38,465 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:39:38,467 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:39:38,467 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:39:38,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:38,468 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:39:38,469 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:39:38,469 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:39:38,469 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:39:38,470 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:38,470 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:38,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:38,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:38,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:38,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:38,474 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:38,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:38,474 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:39:38,475 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:39:38,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:38,475 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:38,476 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:38,476 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:39:38,477 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:38,477 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_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 [2023-11-19 07:39:38,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:38,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:38,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:38,927 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:38,927 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:38,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2023-11-19 07:39:42,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:42,444 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:42,445 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2023-11-19 07:39:42,453 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/data/e73f66dfa/62e61116d3dd4dd38d0b3544218831e2/FLAGfd3da0e75 [2023-11-19 07:39:42,469 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/data/e73f66dfa/62e61116d3dd4dd38d0b3544218831e2 [2023-11-19 07:39:42,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:42,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:42,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:42,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:42,480 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:42,481 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:42,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e86f78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42, skipping insertion in model container [2023-11-19 07:39:42,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:42,509 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:42,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:42,727 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:39:42,733 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:42,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:42,787 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:42,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:42,882 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:42,883 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:42,910 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:42,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42 WrapperNode [2023-11-19 07:39:42,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:42,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:42,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:42,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:42,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:42,948 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:42,983 INFO L138 Inliner]: procedures = 28, calls = 44, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 126 [2023-11-19 07:39:42,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:42,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:42,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:42,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:42,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:42,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:43,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:43,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:43,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:43,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:43,051 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:43,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:43,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:43,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:43,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:43,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:43,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42" (1/1) ... [2023-11-19 07:39:43,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:43,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:43,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:43,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:39:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:39:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:39:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:39:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:39:43,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:39:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:39:43,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:39:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:39:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:39:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:39:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:39:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:39:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:39:43,172 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:39:43,352 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:43,355 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:44,007 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:44,174 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:44,174 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-19 07:39:44,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:44 BoogieIcfgContainer [2023-11-19 07:39:44,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:44,187 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:44,188 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:44,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:44,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:42" (1/3) ... [2023-11-19 07:39:44,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a21a3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:44, skipping insertion in model container [2023-11-19 07:39:44,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:42" (2/3) ... [2023-11-19 07:39:44,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a21a3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:44, skipping insertion in model container [2023-11-19 07:39:44,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:44" (3/3) ... [2023-11-19 07:39:44,195 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2023-11-19 07:39:44,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:44,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-19 07:39:44,217 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:39:44,387 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:39:44,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 223 transitions, 467 flow [2023-11-19 07:39:44,582 INFO L124 PetriNetUnfolderBase]: 16/220 cut-off events. [2023-11-19 07:39:44,582 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:39:44,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 220 events. 16/220 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 257 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 163. Up to 2 conditions per place. [2023-11-19 07:39:44,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 223 transitions, 467 flow [2023-11-19 07:39:44,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 215 transitions, 448 flow [2023-11-19 07:39:44,613 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:44,626 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 215 transitions, 448 flow [2023-11-19 07:39:44,630 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 215 transitions, 448 flow [2023-11-19 07:39:44,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 215 transitions, 448 flow [2023-11-19 07:39:44,721 INFO L124 PetriNetUnfolderBase]: 16/215 cut-off events. [2023-11-19 07:39:44,721 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:39:44,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 215 events. 16/215 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 258 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 163. Up to 2 conditions per place. [2023-11-19 07:39:44,728 INFO L119 LiptonReduction]: Number of co-enabled transitions 3460 [2023-11-19 07:40:13,884 INFO L134 LiptonReduction]: Checked pairs total: 4616 [2023-11-19 07:40:13,884 INFO L136 LiptonReduction]: Total number of compositions: 226 [2023-11-19 07:40:13,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:13,906 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;@947b7c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:13,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-11-19 07:40:13,909 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:40:13,910 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:40:13,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:13,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:13,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:40:13,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2023-11-19 07:40:13,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:13,918 INFO L85 PathProgramCache]: Analyzing trace with hash 27066, now seen corresponding path program 1 times [2023-11-19 07:40:13,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:13,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910144514] [2023-11-19 07:40:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:13,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:13,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:13,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:40:13,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:40:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:14,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:40:14,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:14,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-19 07:40:14,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:14,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:40:14,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:14,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:40:14,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,289 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 13 treesize of output 1 [2023-11-19 07:40:14,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:40:14,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:14,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,339 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 13 treesize of output 1 [2023-11-19 07:40:14,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:40:14,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:14,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:14,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:14,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:40:14,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:40:14,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:14,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:14,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:14,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:14,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,571 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 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:14,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-19 07:40:14,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:14,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:14,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:14,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:14,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:14,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:14,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910144514] [2023-11-19 07:40:14,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910144514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:14,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:14,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:14,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316615710] [2023-11-19 07:40:14,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:14,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:14,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:14,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:15,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 449 [2023-11-19 07:40:15,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:15,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:15,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 449 [2023-11-19 07:40:15,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:16,080 INFO L124 PetriNetUnfolderBase]: 3591/4962 cut-off events. [2023-11-19 07:40:16,080 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-19 07:40:16,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10076 conditions, 4962 events. 3591/4962 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 21811 event pairs, 2801 based on Foata normal form. 0/1982 useless extension candidates. Maximal degree in co-relation 8650. Up to 4958 conditions per place. [2023-11-19 07:40:16,135 INFO L140 encePairwiseOnDemand]: 439/449 looper letters, 54 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2023-11-19 07:40:16,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 262 flow [2023-11-19 07:40:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:16,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-11-19 07:40:16,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4550853749072012 [2023-11-19 07:40:16,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-11-19 07:40:16,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-11-19 07:40:16,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:16,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-11-19 07:40:16,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:16,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:16,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:16,184 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 126 flow. Second operand 3 states and 613 transitions. [2023-11-19 07:40:16,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 262 flow [2023-11-19 07:40:16,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 250 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:40:16,195 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 168 flow [2023-11-19 07:40:16,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2023-11-19 07:40:16,201 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-19 07:40:16,201 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 168 flow [2023-11-19 07:40:16,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:16,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:16,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:40:16,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:40:16,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:16,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2023-11-19 07:40:16,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash 27065, now seen corresponding path program 1 times [2023-11-19 07:40:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:16,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428480848] [2023-11-19 07:40:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:16,412 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 [2023-11-19 07:40:16,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:16,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:40:16,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:40:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:16,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:40:16,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:16,506 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 [2023-11-19 07:40:16,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,525 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 [2023-11-19 07:40:16,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select 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 [2023-11-19 07:40:16,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,540 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 [2023-11-19 07:40:16,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,547 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 [2023-11-19 07:40:16,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select 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 [2023-11-19 07:40:16,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select 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 [2023-11-19 07:40:16,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:40:16,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,599 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 [2023-11-19 07:40:16,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,627 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 [2023-11-19 07:40:16,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,635 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 [2023-11-19 07:40:16,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select 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 [2023-11-19 07:40:16,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select 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 [2023-11-19 07:40:16,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,665 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 [2023-11-19 07:40:16,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,690 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 [2023-11-19 07:40:16,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select 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 [2023-11-19 07:40:16,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select 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 [2023-11-19 07:40:16,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,723 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 [2023-11-19 07:40:16,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select 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 [2023-11-19 07:40:16,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,758 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 [2023-11-19 07:40:16,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,788 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 [2023-11-19 07:40:16,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,803 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 [2023-11-19 07:40:16,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select 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 [2023-11-19 07:40:16,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:16,831 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 [2023-11-19 07:40:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:16,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:16,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:16,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428480848] [2023-11-19 07:40:16,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428480848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:16,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:16,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:16,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912427406] [2023-11-19 07:40:16,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:16,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:16,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:16,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:16,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:16,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 449 [2023-11-19 07:40:16,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 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) [2023-11-19 07:40:16,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:16,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 449 [2023-11-19 07:40:16,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:18,162 INFO L124 PetriNetUnfolderBase]: 3591/4958 cut-off events. [2023-11-19 07:40:18,162 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:40:18,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9988 conditions, 4958 events. 3591/4958 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 21749 event pairs, 2801 based on Foata normal form. 4/1988 useless extension candidates. Maximal degree in co-relation 9932. Up to 4950 conditions per place. [2023-11-19 07:40:18,200 INFO L140 encePairwiseOnDemand]: 443/449 looper letters, 50 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2023-11-19 07:40:18,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 278 flow [2023-11-19 07:40:18,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:18,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:18,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-11-19 07:40:18,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451373422420193 [2023-11-19 07:40:18,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-11-19 07:40:18,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-11-19 07:40:18,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:18,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-11-19 07:40:18,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:18,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:18,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:18,215 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 168 flow. Second operand 3 states and 608 transitions. [2023-11-19 07:40:18,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 278 flow [2023-11-19 07:40:18,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:18,218 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 164 flow [2023-11-19 07:40:18,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2023-11-19 07:40:18,220 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2023-11-19 07:40:18,220 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 164 flow [2023-11-19 07:40:18,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 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) [2023-11-19 07:40:18,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:18,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:40:18,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:40:18,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:18,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2023-11-19 07:40:18,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:18,424 INFO L85 PathProgramCache]: Analyzing trace with hash 841622, now seen corresponding path program 1 times [2023-11-19 07:40:18,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:18,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774795748] [2023-11-19 07:40:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:18,425 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 [2023-11-19 07:40:18,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:18,432 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:40:18,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:40:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:18,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:40:18,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:18,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 07:40:18,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:18,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:18,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:40:18,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:18,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,609 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 13 treesize of output 1 [2023-11-19 07:40:18,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:18,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:18,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:40:18,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:18,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:40:18,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:18,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:18,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:18,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-19 07:40:18,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:18,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:18,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:18,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:18,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:40:18,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:18,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:18,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:40:18,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:18,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:18,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:19,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:19,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774795748] [2023-11-19 07:40:19,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774795748] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:19,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:40:19,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 07:40:19,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351323546] [2023-11-19 07:40:19,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:19,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:19,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:20,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 449 [2023-11-19 07:40:20,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:20,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:20,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 449 [2023-11-19 07:40:20,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:22,741 INFO L124 PetriNetUnfolderBase]: 3603/4976 cut-off events. [2023-11-19 07:40:22,742 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:40:22,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10051 conditions, 4976 events. 3603/4976 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 21824 event pairs, 2801 based on Foata normal form. 0/1993 useless extension candidates. Maximal degree in co-relation 9932. Up to 4965 conditions per place. [2023-11-19 07:40:22,785 INFO L140 encePairwiseOnDemand]: 440/449 looper letters, 50 selfloop transitions, 25 changer transitions 0/75 dead transitions. [2023-11-19 07:40:22,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 404 flow [2023-11-19 07:40:22,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:22,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1119 transitions. [2023-11-19 07:40:22,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153674832962138 [2023-11-19 07:40:22,792 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1119 transitions. [2023-11-19 07:40:22,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1119 transitions. [2023-11-19 07:40:22,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:22,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1119 transitions. [2023-11-19 07:40:22,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.5) internal successors, (1119), 6 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:22,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:22,807 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:22,808 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 164 flow. Second operand 6 states and 1119 transitions. [2023-11-19 07:40:22,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 404 flow [2023-11-19 07:40:22,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 75 transitions, 372 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:22,812 INFO L231 Difference]: Finished difference. Result has 59 places, 75 transitions, 318 flow [2023-11-19 07:40:22,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=59, PETRI_TRANSITIONS=75} [2023-11-19 07:40:22,813 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-11-19 07:40:22,813 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 75 transitions, 318 flow [2023-11-19 07:40:22,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:22,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:22,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:40:22,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:23,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:23,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2023-11-19 07:40:23,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:23,018 INFO L85 PathProgramCache]: Analyzing trace with hash 842018, now seen corresponding path program 1 times [2023-11-19 07:40:23,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:23,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935279046] [2023-11-19 07:40:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:23,019 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 [2023-11-19 07:40:23,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:23,020 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:40:23,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:40:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:23,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:40:23,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:23,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:23,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:23,192 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-19 07:40:23,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 29 [2023-11-19 07:40:23,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:23,314 INFO L349 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2023-11-19 07:40:23,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 37 [2023-11-19 07:40:23,567 INFO L349 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2023-11-19 07:40:23,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 75 [2023-11-19 07:40:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:24,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:24,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:24,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935279046] [2023-11-19 07:40:24,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935279046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:24,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:24,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:24,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538576088] [2023-11-19 07:40:24,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:24,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:24,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:24,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:24,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:24,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 449 [2023-11-19 07:40:24,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 75 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:24,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:24,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 449 [2023-11-19 07:40:24,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:25,168 INFO L124 PetriNetUnfolderBase]: 2839/3971 cut-off events. [2023-11-19 07:40:25,168 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-19 07:40:25,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8069 conditions, 3971 events. 2839/3971 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 17068 event pairs, 2199 based on Foata normal form. 0/1690 useless extension candidates. Maximal degree in co-relation 7995. Up to 3971 conditions per place. [2023-11-19 07:40:25,205 INFO L140 encePairwiseOnDemand]: 446/449 looper letters, 68 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-11-19 07:40:25,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 421 flow [2023-11-19 07:40:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:25,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2023-11-19 07:40:25,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45879732739420936 [2023-11-19 07:40:25,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2023-11-19 07:40:25,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2023-11-19 07:40:25,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:25,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2023-11-19 07:40:25,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:25,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:25,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:25,223 INFO L175 Difference]: Start difference. First operand has 59 places, 75 transitions, 318 flow. Second operand 3 states and 618 transitions. [2023-11-19 07:40:25,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 421 flow [2023-11-19 07:40:25,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 388 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:25,230 INFO L231 Difference]: Finished difference. Result has 58 places, 69 transitions, 252 flow [2023-11-19 07:40:25,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=58, PETRI_TRANSITIONS=69} [2023-11-19 07:40:25,232 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2023-11-19 07:40:25,233 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 69 transitions, 252 flow [2023-11-19 07:40:25,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:25,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:25,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:40:25,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:25,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:40:25,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2023-11-19 07:40:25,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash 26103173, now seen corresponding path program 1 times [2023-11-19 07:40:25,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:25,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644551594] [2023-11-19 07:40:25,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:25,439 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 [2023-11-19 07:40:25,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:25,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:40:25,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c17af16-4c74-452f-9620-d3df82ea37be/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:40:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:25,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:40:25,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:25,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:25,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:25,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644551594] [2023-11-19 07:40:25,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644551594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:25,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:25,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:25,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39078621] [2023-11-19 07:40:25,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:25,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:25,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:25,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:25,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:25,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 449 [2023-11-19 07:40:25,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 69 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:25,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:25,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 449 [2023-11-19 07:40:25,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:26,699 INFO L124 PetriNetUnfolderBase]: 2840/3973 cut-off events. [2023-11-19 07:40:26,699 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-19 07:40:26,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8062 conditions, 3973 events. 2840/3973 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 16979 event pairs, 2199 based on Foata normal form. 1/1693 useless extension candidates. Maximal degree in co-relation 8050. Up to 3968 conditions per place. [2023-11-19 07:40:26,727 INFO L140 encePairwiseOnDemand]: 443/449 looper letters, 59 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2023-11-19 07:40:26,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 404 flow [2023-11-19 07:40:26,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:40:26,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 785 transitions. [2023-11-19 07:40:26,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4370824053452116 [2023-11-19 07:40:26,731 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 785 transitions. [2023-11-19 07:40:26,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 785 transitions. [2023-11-19 07:40:26,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:26,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 785 transitions. [2023-11-19 07:40:26,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)