./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/list1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl --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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:22:46,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:22:47,126 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:22:47,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:22:47,136 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:22:47,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:22:47,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:22:47,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:22:47,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:22:47,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:22:47,193 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:22:47,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:22:47,194 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:22:47,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:22:47,197 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:22:47,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:22:47,198 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:22:47,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:22:47,199 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:22:47,199 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:22:47,199 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:22:47,200 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:22:47,201 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:22:47,203 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:22:47,203 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:22:47,204 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:22:47,205 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:22:47,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:22:47,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:22:47,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:47,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:22:47,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:22:47,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:22:47,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:22:47,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:22:47,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:22:47,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:22:47,209 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:22:47,210 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_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2023-11-12 02:22:47,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:22:47,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:22:47,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:22:47,522 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:22:47,522 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:22:47,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-memsafety/list1.i [2023-11-12 02:22:50,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:22:50,995 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:22:50,996 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/sv-benchmarks/c/pthread-memsafety/list1.i [2023-11-12 02:22:51,017 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/data/7f64f14eb/b50d357a96a24a6babf101561b91cfa5/FLAGeb81c59ae [2023-11-12 02:22:51,032 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/data/7f64f14eb/b50d357a96a24a6babf101561b91cfa5 [2023-11-12 02:22:51,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:22:51,037 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:22:51,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:51,039 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:22:51,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:22:51,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:51" (1/1) ... [2023-11-12 02:22:51,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdda275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:51, skipping insertion in model container [2023-11-12 02:22:51,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:51" (1/1) ... [2023-11-12 02:22:51,100 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:22:51,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:51,605 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) [2023-11-12 02:22:51,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29ff5d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:51, skipping insertion in model container [2023-11-12 02:22:51,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:51,607 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 02:22:51,609 INFO L158 Benchmark]: Toolchain (without parser) took 571.10ms. Allocated memory is still 190.8MB. Free memory was 144.2MB in the beginning and 130.4MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 02:22:51,610 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 142.6MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:22:51,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.45ms. Allocated memory is still 190.8MB. Free memory was 144.2MB in the beginning and 130.4MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 02:22:51,612 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 142.6MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.45ms. Allocated memory is still 190.8MB. Free memory was 144.2MB in the beginning and 130.4MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1048]: 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_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl --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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:22:54,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:22:54,343 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-12 02:22:54,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:22:54,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:22:54,399 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:22:54,400 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:22:54,400 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:22:54,402 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:22:54,407 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:22:54,408 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:22:54,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:22:54,409 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:22:54,411 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:22:54,411 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:22:54,412 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:22:54,412 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:22:54,413 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:22:54,413 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:22:54,414 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:22:54,414 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:22:54,415 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:22:54,415 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:22:54,416 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:22:54,416 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:22:54,417 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:22:54,417 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:22:54,418 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:22:54,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:22:54,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:22:54,421 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:22:54,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:54,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:22:54,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:22:54,423 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:22:54,423 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:22:54,424 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:22:54,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:22:54,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:22:54,426 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:22:54,426 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:22:54,427 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_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2023-11-12 02:22:54,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:22:54,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:22:54,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:22:54,917 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:22:54,918 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:22:54,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-memsafety/list1.i [2023-11-12 02:22:58,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:22:58,457 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:22:58,457 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/sv-benchmarks/c/pthread-memsafety/list1.i [2023-11-12 02:22:58,486 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/data/e87574840/a36091fe3bba4a7ea77f28ab0eb22617/FLAG9745c699f [2023-11-12 02:22:58,505 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/data/e87574840/a36091fe3bba4a7ea77f28ab0eb22617 [2023-11-12 02:22:58,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:22:58,512 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:22:58,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:58,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:22:58,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:22:58,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:58" (1/1) ... [2023-11-12 02:22:58,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6712f1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:58, skipping insertion in model container [2023-11-12 02:22:58,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:22:58" (1/1) ... [2023-11-12 02:22:58,592 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:22:59,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:59,190 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 02:22:59,215 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:22:59,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:59,331 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:22:59,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:22:59,547 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:22:59,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59 WrapperNode [2023-11-12 02:22:59,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:22:59,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:59,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:22:59,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:22:59,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59" (1/1) ... [2023-11-12 02:22:59,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59" (1/1) ... [2023-11-12 02:22:59,623 INFO L138 Inliner]: procedures = 267, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2023-11-12 02:22:59,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:22:59,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:22:59,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:22:59,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:22:59,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59" (1/1) ... [2023-11-12 02:22:59,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59" (1/1) ... [2023-11-12 02:22:59,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59" (1/1) ... [2023-11-12 02:22:59,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59" (1/1) ... [2023-11-12 02:22:59,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59" (1/1) ... [2023-11-12 02:22:59,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59" (1/1) ... [2023-11-12 02:22:59,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59" (1/1) ... [2023-11-12 02:22:59,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59" (1/1) ... [2023-11-12 02:22:59,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:22:59,671 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:22:59,671 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:22:59,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:22:59,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59" (1/1) ... [2023-11-12 02:22:59,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:22:59,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:59,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:22:59,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:22:59,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 02:22:59,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:22:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:22:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 02:22:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:22:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:22:59,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:22:59,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:22:59,759 INFO L130 BoogieDeclarations]: Found specification of procedure delete [2023-11-12 02:22:59,760 INFO L138 BoogieDeclarations]: Found implementation of procedure delete [2023-11-12 02:22:59,760 INFO L130 BoogieDeclarations]: Found specification of procedure build [2023-11-12 02:22:59,762 INFO L138 BoogieDeclarations]: Found implementation of procedure build [2023-11-12 02:22:59,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:22:59,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:22:59,764 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:23:00,017 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:23:00,024 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:23:00,527 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:23:00,535 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:23:00,536 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:23:00,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:00 BoogieIcfgContainer [2023-11-12 02:23:00,538 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:23:00,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:23:00,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:23:00,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:23:00,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:22:58" (1/3) ... [2023-11-12 02:23:00,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f33d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:00, skipping insertion in model container [2023-11-12 02:23:00,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:22:59" (2/3) ... [2023-11-12 02:23:00,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f33d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:00, skipping insertion in model container [2023-11-12 02:23:00,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:00" (3/3) ... [2023-11-12 02:23:00,549 INFO L112 eAbstractionObserver]: Analyzing ICFG list1.i [2023-11-12 02:23:00,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:23:00,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-11-12 02:23:00,571 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:23:00,756 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:23:00,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 151 transitions, 316 flow [2023-11-12 02:23:00,929 INFO L124 PetriNetUnfolderBase]: 6/149 cut-off events. [2023-11-12 02:23:00,929 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:23:00,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 149 events. 6/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 390 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 84. Up to 3 conditions per place. [2023-11-12 02:23:00,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 151 transitions, 316 flow [2023-11-12 02:23:00,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 143 transitions, 298 flow [2023-11-12 02:23:00,954 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:23:00,987 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 143 transitions, 298 flow [2023-11-12 02:23:00,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 143 transitions, 298 flow [2023-11-12 02:23:00,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 143 transitions, 298 flow [2023-11-12 02:23:01,028 INFO L124 PetriNetUnfolderBase]: 6/143 cut-off events. [2023-11-12 02:23:01,029 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:23:01,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 143 events. 6/143 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 389 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 84. Up to 3 conditions per place. [2023-11-12 02:23:01,032 INFO L119 LiptonReduction]: Number of co-enabled transitions 990 [2023-11-12 02:23:39,540 INFO L134 LiptonReduction]: Checked pairs total: 1608 [2023-11-12 02:23:39,540 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-11-12 02:23:39,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:23:39,562 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;@52111230, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:23:39,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-11-12 02:23:39,564 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:23:39,564 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:23:39,565 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:23:39,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:39,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:23:39,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-12 02:23:39,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:39,571 INFO L85 PathProgramCache]: Analyzing trace with hash 629, now seen corresponding path program 1 times [2023-11-12 02:23:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:39,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575105164] [2023-11-12 02:23:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:39,585 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 [2023-11-12 02:23:39,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:39,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:39,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:39,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:23:39,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:39,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:39,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:39,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575105164] [2023-11-12 02:23:39,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575105164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:39,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:39,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:23:39,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583563245] [2023-11-12 02:23:39,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:39,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:23:39,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:39,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:23:39,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:23:39,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 327 [2023-11-12 02:23:39,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:39,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:39,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 327 [2023-11-12 02:23:39,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:40,042 INFO L124 PetriNetUnfolderBase]: 100/235 cut-off events. [2023-11-12 02:23:40,042 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:23:40,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 235 events. 100/235 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 976 event pairs, 84 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 261. Up to 228 conditions per place. [2023-11-12 02:23:40,046 INFO L140 encePairwiseOnDemand]: 316/327 looper letters, 47 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2023-11-12 02:23:40,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 204 flow [2023-11-12 02:23:40,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:23:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:23:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 348 transitions. [2023-11-12 02:23:40,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321100917431193 [2023-11-12 02:23:40,065 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 348 transitions. [2023-11-12 02:23:40,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 348 transitions. [2023-11-12 02:23:40,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:40,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 348 transitions. [2023-11-12 02:23:40,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 174.0) internal successors, (348), 2 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:40,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:40,095 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:40,097 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 132 flow. Second operand 2 states and 348 transitions. [2023-11-12 02:23:40,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 204 flow [2023-11-12 02:23:40,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 196 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:23:40,103 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 102 flow [2023-11-12 02:23:40,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-11-12 02:23:40,109 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -13 predicate places. [2023-11-12 02:23:40,109 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 102 flow [2023-11-12 02:23:40,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:40,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:40,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:23:40,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:40,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:40,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-12 02:23:40,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:40,323 INFO L85 PathProgramCache]: Analyzing trace with hash 617309, now seen corresponding path program 1 times [2023-11-12 02:23:40,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:40,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722555249] [2023-11-12 02:23:40,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:40,324 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 [2023-11-12 02:23:40,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:40,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:40,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:40,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:23:40,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:40,551 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:23:40,553 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-12 02:23:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:40,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:40,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:40,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722555249] [2023-11-12 02:23:40,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722555249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:40,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:40,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:23:40,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706161065] [2023-11-12 02:23:40,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:40,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:23:40,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:40,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:23:40,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:23:41,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 327 [2023-11-12 02:23:41,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:41,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:41,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 327 [2023-11-12 02:23:41,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:41,445 INFO L124 PetriNetUnfolderBase]: 105/250 cut-off events. [2023-11-12 02:23:41,445 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:23:41,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 250 events. 105/250 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1078 event pairs, 60 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 496. Up to 163 conditions per place. [2023-11-12 02:23:41,451 INFO L140 encePairwiseOnDemand]: 319/327 looper letters, 50 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2023-11-12 02:23:41,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 237 flow [2023-11-12 02:23:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:23:41,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:23:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-11-12 02:23:41,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46279306829765543 [2023-11-12 02:23:41,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-11-12 02:23:41,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-11-12 02:23:41,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:41,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-11-12 02:23:41,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:41,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:41,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:41,478 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 102 flow. Second operand 3 states and 454 transitions. [2023-11-12 02:23:41,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 237 flow [2023-11-12 02:23:41,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 237 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:23:41,481 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 129 flow [2023-11-12 02:23:41,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-11-12 02:23:41,484 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2023-11-12 02:23:41,484 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 129 flow [2023-11-12 02:23:41,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:41,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:41,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:23:41,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:41,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:41,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-12 02:23:41,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:41,699 INFO L85 PathProgramCache]: Analyzing trace with hash 617310, now seen corresponding path program 1 times [2023-11-12 02:23:41,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:41,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539209968] [2023-11-12 02:23:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:41,700 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 [2023-11-12 02:23:41,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:41,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:41,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:41,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:23:41,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:41,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:23:41,842 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-12 02:23:41,852 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-12 02:23:41,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:41,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:41,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:41,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539209968] [2023-11-12 02:23:41,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539209968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:41,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:41,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:23:41,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351388418] [2023-11-12 02:23:41,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:41,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:23:41,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:41,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:23:41,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:23:42,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 327 [2023-11-12 02:23:42,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:42,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:42,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 327 [2023-11-12 02:23:42,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:42,534 INFO L124 PetriNetUnfolderBase]: 109/255 cut-off events. [2023-11-12 02:23:42,535 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:23:42,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 255 events. 109/255 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1085 event pairs, 76 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 554. Up to 244 conditions per place. [2023-11-12 02:23:42,537 INFO L140 encePairwiseOnDemand]: 322/327 looper letters, 48 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-12 02:23:42,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 241 flow [2023-11-12 02:23:42,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:23:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:23:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-11-12 02:23:42,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709480122324159 [2023-11-12 02:23:42,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-11-12 02:23:42,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-11-12 02:23:42,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:42,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-11-12 02:23:42,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:42,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:42,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:42,548 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 129 flow. Second operand 3 states and 462 transitions. [2023-11-12 02:23:42,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 241 flow [2023-11-12 02:23:42,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:23:42,551 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 148 flow [2023-11-12 02:23:42,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2023-11-12 02:23:42,552 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2023-11-12 02:23:42,553 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 148 flow [2023-11-12 02:23:42,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:42,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:42,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:23:42,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:42,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:42,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-12 02:23:42,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash 19136266, now seen corresponding path program 1 times [2023-11-12 02:23:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848517204] [2023-11-12 02:23:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:42,761 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 [2023-11-12 02:23:42,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:42,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:42,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:42,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:23:42,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:42,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:23:42,926 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:23:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:42,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:42,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:42,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848517204] [2023-11-12 02:23:42,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848517204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:42,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:42,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:23:42,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589137705] [2023-11-12 02:23:42,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:42,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:23:42,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:42,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:23:42,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:23:43,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 327 [2023-11-12 02:23:43,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:43,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:43,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 327 [2023-11-12 02:23:43,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:43,630 INFO L124 PetriNetUnfolderBase]: 101/241 cut-off events. [2023-11-12 02:23:43,630 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-12 02:23:43,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 241 events. 101/241 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1046 event pairs, 48 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 523. Up to 158 conditions per place. [2023-11-12 02:23:43,633 INFO L140 encePairwiseOnDemand]: 319/327 looper letters, 51 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-11-12 02:23:43,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 265 flow [2023-11-12 02:23:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:23:43,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:23:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-11-12 02:23:43,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4841997961264016 [2023-11-12 02:23:43,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-11-12 02:23:43,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-11-12 02:23:43,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:43,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-11-12 02:23:43,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:43,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:43,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:43,643 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 148 flow. Second operand 3 states and 475 transitions. [2023-11-12 02:23:43,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 265 flow [2023-11-12 02:23:43,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 263 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:23:43,647 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 140 flow [2023-11-12 02:23:43,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-11-12 02:23:43,649 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-11-12 02:23:43,649 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 140 flow [2023-11-12 02:23:43,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:43,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:43,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:23:43,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:43,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:43,859 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-12 02:23:43,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:43,860 INFO L85 PathProgramCache]: Analyzing trace with hash 593223726, now seen corresponding path program 1 times [2023-11-12 02:23:43,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:43,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497839497] [2023-11-12 02:23:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:43,861 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 [2023-11-12 02:23:43,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:43,862 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:43,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:23:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:44,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:23:44,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:44,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:23:44,040 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-12 02:23:44,066 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-12 02:23:44,067 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-11-12 02:23:44,158 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-12 02:23:44,159 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-12 02:23:44,188 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:23:44,188 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 02:23:44,238 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-12 02:23:44,239 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-11-12 02:23:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:44,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:44,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:44,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497839497] [2023-11-12 02:23:44,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497839497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:44,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:44,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:23:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622700367] [2023-11-12 02:23:44,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:44,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:23:44,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:44,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:23:44,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:23:45,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 327 [2023-11-12 02:23:45,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:45,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:45,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 327 [2023-11-12 02:23:45,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:45,684 INFO L124 PetriNetUnfolderBase]: 90/218 cut-off events. [2023-11-12 02:23:45,684 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-12 02:23:45,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 218 events. 90/218 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 976 event pairs, 39 based on Foata normal form. 10/102 useless extension candidates. Maximal degree in co-relation 485. Up to 134 conditions per place. [2023-11-12 02:23:45,686 INFO L140 encePairwiseOnDemand]: 318/327 looper letters, 48 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2023-11-12 02:23:45,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 273 flow [2023-11-12 02:23:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:23:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:23:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 814 transitions. [2023-11-12 02:23:45,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148827726809378 [2023-11-12 02:23:45,692 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 814 transitions. [2023-11-12 02:23:45,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 814 transitions. [2023-11-12 02:23:45,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:45,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 814 transitions. [2023-11-12 02:23:45,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:45,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:45,703 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:45,703 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 140 flow. Second operand 6 states and 814 transitions. [2023-11-12 02:23:45,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 273 flow [2023-11-12 02:23:45,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:23:45,711 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 148 flow [2023-11-12 02:23:45,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-11-12 02:23:45,715 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2023-11-12 02:23:45,715 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 148 flow [2023-11-12 02:23:45,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:45,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:45,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:23:45,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:45,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:45,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-12 02:23:45,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:45,931 INFO L85 PathProgramCache]: Analyzing trace with hash 593223786, now seen corresponding path program 1 times [2023-11-12 02:23:45,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:45,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372102605] [2023-11-12 02:23:45,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:45,932 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 [2023-11-12 02:23:45,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:45,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:45,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-12 02:23:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:46,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-12 02:23:46,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:46,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:46,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:46,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372102605] [2023-11-12 02:23:46,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372102605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:46,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:46,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:23:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051538540] [2023-11-12 02:23:46,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:46,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:23:46,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:23:46,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:23:46,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 327 [2023-11-12 02:23:46,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:46,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:46,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 327 [2023-11-12 02:23:46,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:47,155 INFO L124 PetriNetUnfolderBase]: 95/237 cut-off events. [2023-11-12 02:23:47,155 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-12 02:23:47,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 237 events. 95/237 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1030 event pairs, 76 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 525. Up to 210 conditions per place. [2023-11-12 02:23:47,158 INFO L140 encePairwiseOnDemand]: 317/327 looper letters, 47 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2023-11-12 02:23:47,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 272 flow [2023-11-12 02:23:47,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:23:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:23:47,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 986 transitions. [2023-11-12 02:23:47,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307557885539537 [2023-11-12 02:23:47,164 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 986 transitions. [2023-11-12 02:23:47,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 986 transitions. [2023-11-12 02:23:47,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:47,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 986 transitions. [2023-11-12 02:23:47,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.85714285714286) internal successors, (986), 7 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:47,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 327.0) internal successors, (2616), 8 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:47,174 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 327.0) internal successors, (2616), 8 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:47,174 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 148 flow. Second operand 7 states and 986 transitions. [2023-11-12 02:23:47,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 272 flow [2023-11-12 02:23:47,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 259 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:23:47,177 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 171 flow [2023-11-12 02:23:47,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-11-12 02:23:47,179 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-11-12 02:23:47,179 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 171 flow [2023-11-12 02:23:47,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:47,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:47,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:47,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:47,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:47,413 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-12 02:23:47,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:47,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1142648144, now seen corresponding path program 1 times [2023-11-12 02:23:47,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:47,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547903375] [2023-11-12 02:23:47,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:47,414 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 [2023-11-12 02:23:47,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:47,415 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:47,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-12 02:23:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:47,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:23:47,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:47,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:23:47,620 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-12 02:23:47,620 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-12 02:23:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:47,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:47,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:47,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547903375] [2023-11-12 02:23:47,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547903375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:47,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:47,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:23:47,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288780257] [2023-11-12 02:23:47,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:47,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:23:47,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:47,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:23:47,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:23:47,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 327 [2023-11-12 02:23:47,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:47,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:47,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 327 [2023-11-12 02:23:47,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:23:48,144 INFO L124 PetriNetUnfolderBase]: 95/233 cut-off events. [2023-11-12 02:23:48,144 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-12 02:23:48,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 233 events. 95/233 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 997 event pairs, 69 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 545. Up to 187 conditions per place. [2023-11-12 02:23:48,147 INFO L140 encePairwiseOnDemand]: 323/327 looper letters, 46 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-11-12 02:23:48,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 271 flow [2023-11-12 02:23:48,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:23:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:23:48,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-11-12 02:23:48,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44036697247706424 [2023-11-12 02:23:48,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-11-12 02:23:48,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-11-12 02:23:48,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:23:48,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-11-12 02:23:48,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:48,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:48,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:48,156 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 171 flow. Second operand 3 states and 432 transitions. [2023-11-12 02:23:48,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 271 flow [2023-11-12 02:23:48,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 263 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:23:48,159 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 169 flow [2023-11-12 02:23:48,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-11-12 02:23:48,160 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2023-11-12 02:23:48,160 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 169 flow [2023-11-12 02:23:48,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:48,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:23:48,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:48,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:23:48,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:23:48,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-12 02:23:48,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:48,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1142648143, now seen corresponding path program 1 times [2023-11-12 02:23:48,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:23:48,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660166071] [2023-11-12 02:23:48,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:48,376 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 [2023-11-12 02:23:48,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:23:48,378 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:23:48,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52462ddb-76f1-4656-b983-f0cdee29743d/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-12 02:23:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:48,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:23:48,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:23:48,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:23:48,577 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:23:48,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:23:48,623 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 02:23:48,636 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:23:48,636 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 02:23:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:48,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:23:48,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:23:48,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660166071] [2023-11-12 02:23:48,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660166071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:48,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:48,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:23:48,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013194529] [2023-11-12 02:23:48,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:48,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:23:48,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:23:48,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:23:48,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:49,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 327 [2023-11-12 02:23:49,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:23:49,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:23:49,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 327 [2023-11-12 02:23:49,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand