./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c --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_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:09:57,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:09:57,334 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:09:57,344 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:09:57,345 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:09:57,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:09:57,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:09:57,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:09:57,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:09:57,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:09:57,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:09:57,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:09:57,395 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:09:57,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:09:57,396 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:09:57,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:09:57,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:09:57,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:09:57,398 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:09:57,398 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:09:57,399 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:09:57,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:09:57,400 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:09:57,400 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:09:57,400 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:09:57,401 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:09:57,401 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:09:57,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:09:57,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:09:57,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:57,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:09:57,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:09:57,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:09:57,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:09:57,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:09:57,404 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:09:57,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:09:57,405 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:09:57,405 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_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 [2023-11-12 02:09:57,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:09:57,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:09:57,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:09:57,714 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:09:57,715 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:09:57,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2023-11-12 02:10:00,738 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:10:00,978 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:10:00,979 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2023-11-12 02:10:00,989 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/data/a335082f1/b24a723b0843408888d59944c724eee8/FLAG379aa6515 [2023-11-12 02:10:01,009 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/data/a335082f1/b24a723b0843408888d59944c724eee8 [2023-11-12 02:10:01,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:10:01,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:10:01,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:10:01,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:10:01,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:10:01,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:10:01" (1/1) ... [2023-11-12 02:10:01,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f649dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:01, skipping insertion in model container [2023-11-12 02:10:01,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:10:01" (1/1) ... [2023-11-12 02:10:01,056 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:10:01,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:10:01,271 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 02:10:01,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@267ed4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:01, skipping insertion in model container [2023-11-12 02:10:01,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:10:01,272 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 02:10:01,275 INFO L158 Benchmark]: Toolchain (without parser) took 259.22ms. Allocated memory is still 134.2MB. Free memory was 69.9MB in the beginning and 59.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:10:01,276 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 134.2MB. Free memory was 104.5MB in the beginning and 104.3MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:10:01,277 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.51ms. Allocated memory is still 134.2MB. Free memory was 69.7MB in the beginning and 60.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:10:01,279 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 134.2MB. Free memory was 104.5MB in the beginning and 104.3MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.51ms. Allocated memory is still 134.2MB. Free memory was 69.7MB in the beginning and 60.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 108]: 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_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:10:03,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:10:04,013 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-12 02:10:04,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:10:04,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:10:04,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:10:04,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:10:04,075 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:10:04,076 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:10:04,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:10:04,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:10:04,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:10:04,082 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:10:04,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:10:04,085 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:10:04,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:10:04,086 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:10:04,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:10:04,087 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:10:04,088 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:10:04,088 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:10:04,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:10:04,091 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:10:04,092 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:10:04,092 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:10:04,093 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:10:04,093 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:10:04,094 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:10:04,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:10:04,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:10:04,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:10:04,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:10:04,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:10:04,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:10:04,098 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:10:04,098 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:10:04,098 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:10:04,098 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:10:04,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:10:04,099 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:10:04,099 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:10:04,099 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_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 [2023-11-12 02:10:04,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:10:04,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:10:04,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:10:04,640 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:10:04,640 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:10:04,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2023-11-12 02:10:07,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:10:08,167 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:10:08,168 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2023-11-12 02:10:08,182 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/data/55ab09b4b/064573669e2c46098ba8fb48b9423949/FLAGc9b26c8e0 [2023-11-12 02:10:08,199 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/data/55ab09b4b/064573669e2c46098ba8fb48b9423949 [2023-11-12 02:10:08,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:10:08,204 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:10:08,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:10:08,206 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:10:08,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:10:08,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4dba35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08, skipping insertion in model container [2023-11-12 02:10:08,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:10:08,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:10:08,492 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 02:10:08,499 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:10:08,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:10:08,556 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:10:08,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:10:08,645 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:10:08,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08 WrapperNode [2023-11-12 02:10:08,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:10:08,647 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:10:08,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:10:08,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:10:08,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,731 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 167 [2023-11-12 02:10:08,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:10:08,733 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:10:08,733 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:10:08,733 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:10:08,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:10:08,806 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:10:08,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:10:08,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:10:08,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08" (1/1) ... [2023-11-12 02:10:08,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:10:08,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:10:08,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:10:08,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:10:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:10:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 02:10:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:10:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 02:10:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:10:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:10:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:10:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:10:08,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:10:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:10:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:10:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:10:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 02:10:08,937 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 02:10:09,128 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:10:09,131 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:10:09,930 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:10:09,946 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:10:09,946 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:10:09,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:10:09 BoogieIcfgContainer [2023-11-12 02:10:09,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:10:09,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:10:09,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:10:09,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:10:09,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:10:08" (1/3) ... [2023-11-12 02:10:09,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fff474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:10:09, skipping insertion in model container [2023-11-12 02:10:09,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:10:08" (2/3) ... [2023-11-12 02:10:09,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fff474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:10:09, skipping insertion in model container [2023-11-12 02:10:09,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:10:09" (3/3) ... [2023-11-12 02:10:09,965 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2023-11-12 02:10:09,985 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:10:09,986 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-12 02:10:09,987 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:10:10,171 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:10:10,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 238 transitions, 490 flow [2023-11-12 02:10:10,335 INFO L124 PetriNetUnfolderBase]: 18/236 cut-off events. [2023-11-12 02:10:10,335 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:10:10,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 236 events. 18/236 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 454 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-11-12 02:10:10,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 238 transitions, 490 flow [2023-11-12 02:10:10,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 231 transitions, 474 flow [2023-11-12 02:10:10,368 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:10:10,378 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 231 transitions, 474 flow [2023-11-12 02:10:10,381 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 231 transitions, 474 flow [2023-11-12 02:10:10,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 231 transitions, 474 flow [2023-11-12 02:10:10,434 INFO L124 PetriNetUnfolderBase]: 18/231 cut-off events. [2023-11-12 02:10:10,434 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:10:10,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 231 events. 18/231 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 449 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-11-12 02:10:10,442 INFO L119 LiptonReduction]: Number of co-enabled transitions 6604 [2023-11-12 02:10:46,394 INFO L134 LiptonReduction]: Checked pairs total: 6613 [2023-11-12 02:10:46,395 INFO L136 LiptonReduction]: Total number of compositions: 278 [2023-11-12 02:10:46,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:10:46,421 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;@38cf74c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:10:46,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-12 02:10:46,425 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:10:46,426 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:10:46,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:10:46,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:46,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:10:46,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-12 02:10:46,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:46,435 INFO L85 PathProgramCache]: Analyzing trace with hash 30956, now seen corresponding path program 1 times [2023-11-12 02:10:46,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:10:46,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103884148] [2023-11-12 02:10:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:46,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:10:46,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:10:46,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:46,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:46,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:10:46,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:10:46,713 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-12 02:10:46,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:46,735 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:10:46,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:46,747 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 8 treesize of output 1 [2023-11-12 02:10:46,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:46,760 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:10:46,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:46,773 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 8 treesize of output 1 [2023-11-12 02:10:46,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:46,786 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:10:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:10:46,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:10:46,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:10:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103884148] [2023-11-12 02:10:46,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103884148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:46,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:46,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:10:46,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652595046] [2023-11-12 02:10:46,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:46,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:46,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:10:46,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:46,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:47,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 516 [2023-11-12 02:10:47,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states 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 02:10:47,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:47,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 516 [2023-11-12 02:10:47,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:47,767 INFO L124 PetriNetUnfolderBase]: 454/748 cut-off events. [2023-11-12 02:10:47,767 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-12 02:10:47,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 748 events. 454/748 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 3306 event pairs, 378 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 1300. Up to 747 conditions per place. [2023-11-12 02:10:47,776 INFO L140 encePairwiseOnDemand]: 507/516 looper letters, 37 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-11-12 02:10:47,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 180 flow [2023-11-12 02:10:47,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:47,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2023-11-12 02:10:47,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405684754521964 [2023-11-12 02:10:47,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2023-11-12 02:10:47,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2023-11-12 02:10:47,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:47,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2023-11-12 02:10:47,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states 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 02:10:47,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 02:10:47,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 02:10:47,825 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 92 flow. Second operand 3 states and 682 transitions. [2023-11-12 02:10:47,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 180 flow [2023-11-12 02:10:47,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:10:47,833 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 111 flow [2023-11-12 02:10:47,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2023-11-12 02:10:47,839 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2023-11-12 02:10:47,840 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 111 flow [2023-11-12 02:10:47,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states 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 02:10:47,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:47,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:10:47,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:48,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:48,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-12 02:10:48,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:48,054 INFO L85 PathProgramCache]: Analyzing trace with hash 963082, now seen corresponding path program 1 times [2023-11-12 02:10:48,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:10:48,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010726230] [2023-11-12 02:10:48,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:48,055 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 02:10:48,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:10:48,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:48,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:48,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:10:48,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:10:48,176 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:10:48,177 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 19 treesize of output 22 [2023-11-12 02:10:48,218 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-12 02:10:48,219 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 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-12 02:10:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:10:48,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:10:48,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:10:48,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010726230] [2023-11-12 02:10:48,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010726230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:48,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:48,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:10:48,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682962610] [2023-11-12 02:10:48,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:48,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:48,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:10:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:48,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 516 [2023-11-12 02:10:48,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 02:10:48,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:48,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 516 [2023-11-12 02:10:48,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:49,131 INFO L124 PetriNetUnfolderBase]: 343/581 cut-off events. [2023-11-12 02:10:49,131 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-12 02:10:49,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 581 events. 343/581 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 2436 event pairs, 284 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 1148. Up to 581 conditions per place. [2023-11-12 02:10:49,138 INFO L140 encePairwiseOnDemand]: 513/516 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-12 02:10:49,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 176 flow [2023-11-12 02:10:49,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2023-11-12 02:10:49,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43087855297157623 [2023-11-12 02:10:49,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2023-11-12 02:10:49,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2023-11-12 02:10:49,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:49,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2023-11-12 02:10:49,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 02:10:49,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 02:10:49,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 02:10:49,157 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 111 flow. Second operand 3 states and 667 transitions. [2023-11-12 02:10:49,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 176 flow [2023-11-12 02:10:49,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:10:49,160 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 98 flow [2023-11-12 02:10:49,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-11-12 02:10:49,162 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2023-11-12 02:10:49,162 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 98 flow [2023-11-12 02:10:49,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 02:10:49,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:49,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:10:49,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:49,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:49,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-12 02:10:49,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:49,376 INFO L85 PathProgramCache]: Analyzing trace with hash 963083, now seen corresponding path program 1 times [2023-11-12 02:10:49,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:10:49,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725241311] [2023-11-12 02:10:49,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:49,377 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 02:10:49,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:10:49,383 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:49,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:49,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:10:49,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:10:49,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:49,514 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 13 [2023-11-12 02:10:49,524 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 02:10:49,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:49,580 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-12 02:10:49,581 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-11-12 02:10:49,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-12 02:10:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:10:49,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:10:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:10:50,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:10:50,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725241311] [2023-11-12 02:10:50,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725241311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:10:50,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:10:50,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 02:10:50,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518338433] [2023-11-12 02:10:50,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:10:50,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:10:50,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:10:50,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:10:50,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:10:52,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:10:53,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 516 [2023-11-12 02:10:53,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 02:10:53,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:53,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 516 [2023-11-12 02:10:53,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:54,458 INFO L124 PetriNetUnfolderBase]: 347/592 cut-off events. [2023-11-12 02:10:54,458 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-12 02:10:54,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 592 events. 347/592 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 2487 event pairs, 284 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 1203. Up to 579 conditions per place. [2023-11-12 02:10:54,463 INFO L140 encePairwiseOnDemand]: 510/516 looper letters, 39 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2023-11-12 02:10:54,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 238 flow [2023-11-12 02:10:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:10:54,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:10:54,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1266 transitions. [2023-11-12 02:10:54,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40891472868217055 [2023-11-12 02:10:54,470 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1266 transitions. [2023-11-12 02:10:54,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1266 transitions. [2023-11-12 02:10:54,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:54,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1266 transitions. [2023-11-12 02:10:54,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 02:10:54,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states 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 02:10:54,485 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 516.0) internal successors, (3612), 7 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states 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 02:10:54,485 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 98 flow. Second operand 6 states and 1266 transitions. [2023-11-12 02:10:54,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 238 flow [2023-11-12 02:10:54,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 237 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:10:54,490 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 178 flow [2023-11-12 02:10:54,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-11-12 02:10:54,492 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-11-12 02:10:54,492 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 178 flow [2023-11-12 02:10:54,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states 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 02:10:54,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:54,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:10:54,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:54,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:54,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-12 02:10:54,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:54,706 INFO L85 PathProgramCache]: Analyzing trace with hash 30957, now seen corresponding path program 1 times [2023-11-12 02:10:54,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:10:54,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674363847] [2023-11-12 02:10:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:54,707 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 02:10:54,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:10:54,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:54,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:54,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:10:54,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:10:54,788 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 7 [2023-11-12 02:10:54,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:54,800 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 6 treesize of output 1 [2023-11-12 02:10:54,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:54,808 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 6 treesize of output 1 [2023-11-12 02:10:54,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:54,829 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:10:54,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:54,855 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 02:10:54,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:54,878 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:10:54,883 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 02:10:54,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:10:54,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:10:54,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674363847] [2023-11-12 02:10:54,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674363847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:10:54,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:10:54,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:10:54,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084329702] [2023-11-12 02:10:54,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:10:54,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:10:54,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:10:54,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:10:54,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:10:55,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 516 [2023-11-12 02:10:55,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:55,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:10:55,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 516 [2023-11-12 02:10:55,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:10:55,624 INFO L124 PetriNetUnfolderBase]: 346/587 cut-off events. [2023-11-12 02:10:55,624 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-12 02:10:55,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 587 events. 346/587 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 2469 event pairs, 284 based on Foata normal form. 5/222 useless extension candidates. Maximal degree in co-relation 1217. Up to 578 conditions per place. [2023-11-12 02:10:55,631 INFO L140 encePairwiseOnDemand]: 512/516 looper letters, 36 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2023-11-12 02:10:55,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 254 flow [2023-11-12 02:10:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:10:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:10:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2023-11-12 02:10:55,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354005167958656 [2023-11-12 02:10:55,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2023-11-12 02:10:55,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2023-11-12 02:10:55,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:10:55,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2023-11-12 02:10:55,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states 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 02:10:55,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 02:10:55,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 02:10:55,644 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 178 flow. Second operand 3 states and 674 transitions. [2023-11-12 02:10:55,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 254 flow [2023-11-12 02:10:55,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 249 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:10:55,650 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 177 flow [2023-11-12 02:10:55,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=516, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-11-12 02:10:55,652 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-11-12 02:10:55,652 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 177 flow [2023-11-12 02:10:55,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:10:55,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:10:55,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:10:55,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:55,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:55,868 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-12 02:10:55,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:10:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash 962971, now seen corresponding path program 1 times [2023-11-12 02:10:55,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:10:55,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169386348] [2023-11-12 02:10:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:10:55,869 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 02:10:55,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:10:55,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:55,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f7847a0-f345-4aa7-bcfa-add58c165ca5/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 02:10:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:10:55,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:10:55,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:10:55,968 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 8 treesize of output 7 [2023-11-12 02:10:55,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:55,989 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:10:56,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:56,009 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:10:56,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:56,042 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 02:10:56,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:56,058 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:10:56,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:10:56,066 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 8 treesize of output 1 [2023-11-12 02:10:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:10:56,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:10:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:10:56,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:10:56,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169386348] [2023-11-12 02:10:56,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169386348] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:10:56,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:10:56,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 02:10:56,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157424321] [2023-11-12 02:10:56,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:10:56,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:10:56,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:10:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:10:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30