./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ --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 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:44:37,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:44:38,075 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 21:44:38,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:44:38,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:44:38,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:44:38,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:44:38,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:44:38,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:44:38,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:44:38,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:44:38,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:44:38,147 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:44:38,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:44:38,148 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:44:38,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:44:38,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:44:38,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:44:38,151 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:44:38,151 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:44:38,152 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:44:38,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:44:38,153 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:44:38,154 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:44:38,155 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:44:38,155 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:44:38,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:44:38,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:44:38,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:44:38,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:44:38,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:44:38,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:44:38,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:44:38,159 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:44:38,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:44:38,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:44:38,161 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:44:38,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:44:38,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:44:38,162 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_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2023-11-23 21:44:38,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:44:38,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:44:38,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:44:38,530 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:44:38,531 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:44:38,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-23 21:44:41,777 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:44:42,189 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:44:42,190 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-23 21:44:42,235 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/data/8ef46482f/198805abcd1f4352b5da18492dc01075/FLAG36ff29150 [2023-11-23 21:44:42,251 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/data/8ef46482f/198805abcd1f4352b5da18492dc01075 [2023-11-23 21:44:42,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:44:42,255 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:44:42,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:44:42,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:44:42,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:44:42,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:44:42" (1/1) ... [2023-11-23 21:44:42,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57fc166a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:42, skipping insertion in model container [2023-11-23 21:44:42,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:44:42" (1/1) ... [2023-11-23 21:44:42,355 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:44:43,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:44:43,136 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) [2023-11-23 21:44:43,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ee0ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:43, skipping insertion in model container [2023-11-23 21:44:43,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:44:43,138 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:44:43,140 INFO L158 Benchmark]: Toolchain (without parser) took 883.68ms. Allocated memory is still 159.4MB. Free memory was 126.0MB in the beginning and 125.0MB in the end (delta: 999.7kB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 21:44:43,141 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:44:43,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 880.74ms. Allocated memory is still 159.4MB. Free memory was 125.5MB in the beginning and 125.0MB in the end (delta: 532.4kB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 21:44:43,144 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 880.74ms. Allocated memory is still 159.4MB. Free memory was 125.5MB in the beginning and 125.0MB in the end (delta: 532.4kB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3904]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ --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 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:44:46,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:44:46,291 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-23 21:44:46,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:44:46,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:44:46,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:44:46,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:44:46,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:44:46,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:44:46,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:44:46,387 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:44:46,388 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:44:46,388 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:44:46,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:44:46,391 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:44:46,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:44:46,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:44:46,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:44:46,393 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:44:46,394 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:44:46,395 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:44:46,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:44:46,396 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:44:46,396 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:44:46,397 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:44:46,397 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:44:46,398 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:44:46,398 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:44:46,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:44:46,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:44:46,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:44:46,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:44:46,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:44:46,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:44:46,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:44:46,403 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-23 21:44:46,404 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:44:46,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:44:46,404 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:44:46,405 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:44:46,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:44:46,406 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-23 21:44:46,406 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_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2023-11-23 21:44:46,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:44:46,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:44:46,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:44:46,911 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:44:46,912 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:44:46,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-23 21:44:50,600 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:44:51,199 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:44:51,201 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-23 21:44:51,260 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/data/3e2adc145/2d6d4f86f81e423ab5f14a26d3ddec2b/FLAG3d30d585b [2023-11-23 21:44:51,287 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/data/3e2adc145/2d6d4f86f81e423ab5f14a26d3ddec2b [2023-11-23 21:44:51,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:44:51,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:44:51,300 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:44:51,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:44:51,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:44:51,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:44:51" (1/1) ... [2023-11-23 21:44:51,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2350e224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:51, skipping insertion in model container [2023-11-23 21:44:51,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:44:51" (1/1) ... [2023-11-23 21:44:51,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:44:52,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:44:52,259 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:44:52,292 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:44:52,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:44:52,369 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:44:52,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:44:52,533 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:44:52,533 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:44:52,543 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:44:52,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52 WrapperNode [2023-11-23 21:44:52,543 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:44:52,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:44:52,545 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:44:52,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:44:52,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52" (1/1) ... [2023-11-23 21:44:52,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52" (1/1) ... [2023-11-23 21:44:52,630 INFO L138 Inliner]: procedures = 250, calls = 52, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 151 [2023-11-23 21:44:52,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:44:52,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:44:52,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:44:52,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:44:52,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52" (1/1) ... [2023-11-23 21:44:52,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52" (1/1) ... [2023-11-23 21:44:52,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52" (1/1) ... [2023-11-23 21:44:52,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52" (1/1) ... [2023-11-23 21:44:52,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52" (1/1) ... [2023-11-23 21:44:52,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52" (1/1) ... [2023-11-23 21:44:52,723 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52" (1/1) ... [2023-11-23 21:44:52,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52" (1/1) ... [2023-11-23 21:44:52,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:44:52,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:44:52,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:44:52,738 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:44:52,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52" (1/1) ... [2023-11-23 21:44:52,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:44:52,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:44:52,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:44:52,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:44:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:44:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-23 21:44:52,815 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-23 21:44:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:44:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:44:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:44:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:44:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:44:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-23 21:44:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:44:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:44:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:44:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:44:52,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:44:52,819 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:44:53,253 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:44:53,255 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:44:53,973 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:44:54,234 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:44:54,235 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:44:54,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:44:54 BoogieIcfgContainer [2023-11-23 21:44:54,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:44:54,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:44:54,238 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:44:54,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:44:54,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:44:51" (1/3) ... [2023-11-23 21:44:54,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4bfdf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:44:54, skipping insertion in model container [2023-11-23 21:44:54,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:44:52" (2/3) ... [2023-11-23 21:44:54,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4bfdf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:44:54, skipping insertion in model container [2023-11-23 21:44:54,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:44:54" (3/3) ... [2023-11-23 21:44:54,248 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2023-11-23 21:44:54,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:44:54,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-11-23 21:44:54,269 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:44:54,406 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 21:44:54,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 138 transitions, 290 flow [2023-11-23 21:44:54,567 INFO L124 PetriNetUnfolderBase]: 18/174 cut-off events. [2023-11-23 21:44:54,567 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 21:44:54,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 18/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 551 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2023-11-23 21:44:54,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 138 transitions, 290 flow [2023-11-23 21:44:54,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 136 transitions, 284 flow [2023-11-23 21:44:54,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:44:54,611 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;@506d221d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:44:54,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-11-23 21:44:54,615 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:44:54,615 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-23 21:44:54,615 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:44:54,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:44:54,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 21:44:54,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:44:54,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:44:54,623 INFO L85 PathProgramCache]: Analyzing trace with hash 518871, now seen corresponding path program 1 times [2023-11-23 21:44:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:44:54,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727940042] [2023-11-23 21:44:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:44:54,645 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 [2023-11-23 21:44:54,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:44:54,649 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:44:54,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 21:44:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:44:54,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:44:54,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:44:54,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:44:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:44:54,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:44:54,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:44:54,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727940042] [2023-11-23 21:44:54,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727940042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:44:54,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:44:54,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:44:54,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043279721] [2023-11-23 21:44:54,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:44:54,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:44:54,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:44:55,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:44:55,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:44:55,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-23 21:44:55,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 136 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:44:55,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:44:55,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-23 21:44:55,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:44:57,235 INFO L124 PetriNetUnfolderBase]: 3071/8154 cut-off events. [2023-11-23 21:44:57,236 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-23 21:44:57,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13072 conditions, 8154 events. 3071/8154 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 82887 event pairs, 407 based on Foata normal form. 588/5785 useless extension candidates. Maximal degree in co-relation 12836. Up to 4146 conditions per place. [2023-11-23 21:44:57,331 INFO L140 encePairwiseOnDemand]: 120/138 looper letters, 78 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2023-11-23 21:44:57,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 136 transitions, 444 flow [2023-11-23 21:44:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:44:57,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:44:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-11-23 21:44:57,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2023-11-23 21:44:57,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-11-23 21:44:57,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-11-23 21:44:57,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:44:57,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-11-23 21:44:57,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:44:57,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:44:57,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:44:57,362 INFO L175 Difference]: Start difference. First operand has 128 places, 136 transitions, 284 flow. Second operand 3 states and 270 transitions. [2023-11-23 21:44:57,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 136 transitions, 444 flow [2023-11-23 21:44:57,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 136 transitions, 436 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 21:44:57,372 INFO L231 Difference]: Finished difference. Result has 116 places, 114 transitions, 236 flow [2023-11-23 21:44:57,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=116, PETRI_TRANSITIONS=114} [2023-11-23 21:44:57,378 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -12 predicate places. [2023-11-23 21:44:57,378 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 114 transitions, 236 flow [2023-11-23 21:44:57,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:44:57,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:44:57,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 21:44:57,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 21:44:57,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:44:57,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:44:57,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:44:57,586 INFO L85 PathProgramCache]: Analyzing trace with hash 518872, now seen corresponding path program 1 times [2023-11-23 21:44:57,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:44:57,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730098424] [2023-11-23 21:44:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:44:57,587 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 [2023-11-23 21:44:57,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:44:57,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:44:57,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 21:44:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:44:57,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:44:57,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:44:57,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:44:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:44:57,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:44:57,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:44:57,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730098424] [2023-11-23 21:44:57,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730098424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:44:57,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:44:57,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:44:57,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116006644] [2023-11-23 21:44:57,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:44:57,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:44:57,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:44:57,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:44:57,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:44:58,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 138 [2023-11-23 21:44:58,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 114 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:44:58,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:44:58,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 138 [2023-11-23 21:44:58,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:44:59,577 INFO L124 PetriNetUnfolderBase]: 3071/8150 cut-off events. [2023-11-23 21:44:59,578 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-11-23 21:44:59,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13185 conditions, 8150 events. 3071/8150 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 82891 event pairs, 407 based on Foata normal form. 2/5195 useless extension candidates. Maximal degree in co-relation 1481. Up to 4146 conditions per place. [2023-11-23 21:44:59,646 INFO L140 encePairwiseOnDemand]: 132/138 looper letters, 76 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-11-23 21:44:59,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 132 transitions, 428 flow [2023-11-23 21:44:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:44:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:44:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-11-23 21:44:59,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6328502415458938 [2023-11-23 21:44:59,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-11-23 21:44:59,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-11-23 21:44:59,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:44:59,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-11-23 21:44:59,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:44:59,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:44:59,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:44:59,656 INFO L175 Difference]: Start difference. First operand has 116 places, 114 transitions, 236 flow. Second operand 3 states and 262 transitions. [2023-11-23 21:44:59,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 132 transitions, 428 flow [2023-11-23 21:44:59,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 132 transitions, 424 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:44:59,663 INFO L231 Difference]: Finished difference. Result has 112 places, 110 transitions, 228 flow [2023-11-23 21:44:59,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=112, PETRI_TRANSITIONS=110} [2023-11-23 21:44:59,664 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -16 predicate places. [2023-11-23 21:44:59,664 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 110 transitions, 228 flow [2023-11-23 21:44:59,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:44:59,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:44:59,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-23 21:44:59,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 21:44:59,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:44:59,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:44:59,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:44:59,870 INFO L85 PathProgramCache]: Analyzing trace with hash 16083763, now seen corresponding path program 1 times [2023-11-23 21:44:59,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:44:59,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004973211] [2023-11-23 21:44:59,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:44:59,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:44:59,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:44:59,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:44:59,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 21:45:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:00,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:45:00,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:00,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:00,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:00,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004973211] [2023-11-23 21:45:00,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004973211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:00,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:00,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:45:00,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641034306] [2023-11-23 21:45:00,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:00,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:45:00,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:00,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:45:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:45:00,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 138 [2023-11-23 21:45:00,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:00,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:00,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 138 [2023-11-23 21:45:00,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:01,308 INFO L124 PetriNetUnfolderBase]: 3070/5697 cut-off events. [2023-11-23 21:45:01,308 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-11-23 21:45:01,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10732 conditions, 5697 events. 3070/5697 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 40175 event pairs, 2805 based on Foata normal form. 1/3735 useless extension candidates. Maximal degree in co-relation 3581. Up to 4464 conditions per place. [2023-11-23 21:45:01,352 INFO L140 encePairwiseOnDemand]: 135/138 looper letters, 76 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-11-23 21:45:01,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 131 transitions, 426 flow [2023-11-23 21:45:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:45:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:45:01,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-11-23 21:45:01,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6473429951690821 [2023-11-23 21:45:01,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-11-23 21:45:01,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-11-23 21:45:01,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:01,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-11-23 21:45:01,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:01,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:01,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:01,362 INFO L175 Difference]: Start difference. First operand has 112 places, 110 transitions, 228 flow. Second operand 3 states and 268 transitions. [2023-11-23 21:45:01,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 131 transitions, 426 flow [2023-11-23 21:45:01,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 131 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:45:01,370 INFO L231 Difference]: Finished difference. Result has 112 places, 109 transitions, 226 flow [2023-11-23 21:45:01,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=112, PETRI_TRANSITIONS=109} [2023-11-23 21:45:01,372 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -16 predicate places. [2023-11-23 21:45:01,373 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 109 transitions, 226 flow [2023-11-23 21:45:01,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:01,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:01,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:01,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 21:45:01,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:01,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:45:01,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:01,584 INFO L85 PathProgramCache]: Analyzing trace with hash -938013520, now seen corresponding path program 1 times [2023-11-23 21:45:01,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:45:01,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517971888] [2023-11-23 21:45:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:01,586 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 [2023-11-23 21:45:01,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:45:01,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:45:01,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 21:45:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:01,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:45:01,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:01,817 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:45:01,818 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:45:01,819 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:45:01,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 41 [2023-11-23 21:45:01,905 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:45:01,906 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:45:01,906 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:45:01,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:45:01,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2023-11-23 21:45:02,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:45:02,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 157 treesize of output 61 [2023-11-23 21:45:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:02,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:02,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:02,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517971888] [2023-11-23 21:45:02,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517971888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:02,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:02,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:45:02,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943856119] [2023-11-23 21:45:02,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:02,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:45:02,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:02,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:45:02,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:45:02,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-23 21:45:02,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 109 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:02,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:02,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-23 21:45:02,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:04,070 INFO L124 PetriNetUnfolderBase]: 3609/6903 cut-off events. [2023-11-23 21:45:04,070 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2023-11-23 21:45:04,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12780 conditions, 6903 events. 3609/6903 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 50395 event pairs, 3608 based on Foata normal form. 2/4620 useless extension candidates. Maximal degree in co-relation 11811. Up to 5708 conditions per place. [2023-11-23 21:45:04,113 INFO L140 encePairwiseOnDemand]: 128/138 looper letters, 53 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2023-11-23 21:45:04,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 338 flow [2023-11-23 21:45:04,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:45:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:45:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 353 transitions. [2023-11-23 21:45:04,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115942028985507 [2023-11-23 21:45:04,122 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 353 transitions. [2023-11-23 21:45:04,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 353 transitions. [2023-11-23 21:45:04,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:04,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 353 transitions. [2023-11-23 21:45:04,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:04,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:04,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:04,138 INFO L175 Difference]: Start difference. First operand has 112 places, 109 transitions, 226 flow. Second operand 5 states and 353 transitions. [2023-11-23 21:45:04,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 338 flow [2023-11-23 21:45:04,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 104 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:45:04,159 INFO L231 Difference]: Finished difference. Result has 109 places, 104 transitions, 237 flow [2023-11-23 21:45:04,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=109, PETRI_TRANSITIONS=104} [2023-11-23 21:45:04,162 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -19 predicate places. [2023-11-23 21:45:04,162 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 104 transitions, 237 flow [2023-11-23 21:45:04,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:04,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:04,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:04,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 21:45:04,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:04,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:45:04,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:04,370 INFO L85 PathProgramCache]: Analyzing trace with hash -307363498, now seen corresponding path program 1 times [2023-11-23 21:45:04,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:45:04,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955402336] [2023-11-23 21:45:04,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:04,371 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 [2023-11-23 21:45:04,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:45:04,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:45:04,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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 [2023-11-23 21:45:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:04,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:45:04,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:04,645 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-23 21:45:04,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 21:45:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:04,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:04,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:04,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955402336] [2023-11-23 21:45:04,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955402336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:04,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:04,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:45:04,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813171405] [2023-11-23 21:45:04,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:45:04,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:45:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:45:04,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 138 [2023-11-23 21:45:04,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 104 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:04,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:04,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 138 [2023-11-23 21:45:04,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:06,107 INFO L124 PetriNetUnfolderBase]: 3070/6132 cut-off events. [2023-11-23 21:45:06,107 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-11-23 21:45:06,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11183 conditions, 6132 events. 3070/6132 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 46233 event pairs, 2541 based on Foata normal form. 146/4234 useless extension candidates. Maximal degree in co-relation 11104. Up to 4046 conditions per place. [2023-11-23 21:45:06,158 INFO L140 encePairwiseOnDemand]: 133/138 looper letters, 81 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2023-11-23 21:45:06,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 131 transitions, 459 flow [2023-11-23 21:45:06,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:45:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:45:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-11-23 21:45:06,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6545893719806763 [2023-11-23 21:45:06,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-11-23 21:45:06,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-11-23 21:45:06,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:06,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-11-23 21:45:06,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:06,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:06,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:06,165 INFO L175 Difference]: Start difference. First operand has 109 places, 104 transitions, 237 flow. Second operand 3 states and 271 transitions. [2023-11-23 21:45:06,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 131 transitions, 459 flow [2023-11-23 21:45:06,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 131 transitions, 450 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:45:06,170 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 237 flow [2023-11-23 21:45:06,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2023-11-23 21:45:06,173 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -21 predicate places. [2023-11-23 21:45:06,174 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 237 flow [2023-11-23 21:45:06,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:06,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:06,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:06,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:45:06,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:06,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:45:06,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:06,383 INFO L85 PathProgramCache]: Analyzing trace with hash -307363497, now seen corresponding path program 1 times [2023-11-23 21:45:06,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:45:06,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557446428] [2023-11-23 21:45:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:06,385 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 [2023-11-23 21:45:06,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:45:06,386 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:45:06,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 21:45:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:06,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:45:06,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:06,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:45:06,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:45:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:06,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:06,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:06,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557446428] [2023-11-23 21:45:06,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557446428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:06,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:06,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:45:06,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111949941] [2023-11-23 21:45:06,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:06,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:45:06,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:06,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:45:06,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:45:07,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-23 21:45:07,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:07,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:07,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-23 21:45:07,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:08,525 INFO L124 PetriNetUnfolderBase]: 3334/6494 cut-off events. [2023-11-23 21:45:08,526 INFO L125 PetriNetUnfolderBase]: For 292/292 co-relation queries the response was YES. [2023-11-23 21:45:08,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12245 conditions, 6494 events. 3334/6494 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 48133 event pairs, 2805 based on Foata normal form. 1/4330 useless extension candidates. Maximal degree in co-relation 9964. Up to 4456 conditions per place. [2023-11-23 21:45:08,574 INFO L140 encePairwiseOnDemand]: 133/138 looper letters, 83 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2023-11-23 21:45:08,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 129 transitions, 461 flow [2023-11-23 21:45:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:45:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:45:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-11-23 21:45:08,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5778985507246377 [2023-11-23 21:45:08,577 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-11-23 21:45:08,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-11-23 21:45:08,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:08,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-11-23 21:45:08,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:08,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:08,582 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:08,582 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 237 flow. Second operand 4 states and 319 transitions. [2023-11-23 21:45:08,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 129 transitions, 461 flow [2023-11-23 21:45:08,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 129 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:45:08,594 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 236 flow [2023-11-23 21:45:08,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2023-11-23 21:45:08,595 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -21 predicate places. [2023-11-23 21:45:08,595 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 236 flow [2023-11-23 21:45:08,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:08,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:08,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:08,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:45:08,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:08,803 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:45:08,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:08,803 INFO L85 PathProgramCache]: Analyzing trace with hash 204885648, now seen corresponding path program 1 times [2023-11-23 21:45:08,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:45:08,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233785917] [2023-11-23 21:45:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:08,805 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 [2023-11-23 21:45:08,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:45:08,806 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:45:08,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-23 21:45:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:09,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:45:09,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:09,161 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-23 21:45:09,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 21:45:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:09,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:09,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:09,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233785917] [2023-11-23 21:45:09,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233785917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:09,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:09,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:45:09,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324687434] [2023-11-23 21:45:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:09,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:45:09,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:09,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:45:09,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:45:09,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 138 [2023-11-23 21:45:09,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:09,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:09,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 138 [2023-11-23 21:45:09,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:10,407 INFO L124 PetriNetUnfolderBase]: 3070/6095 cut-off events. [2023-11-23 21:45:10,407 INFO L125 PetriNetUnfolderBase]: For 583/583 co-relation queries the response was YES. [2023-11-23 21:45:10,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11437 conditions, 6095 events. 3070/6095 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 45719 event pairs, 2541 based on Foata normal form. 24/4111 useless extension candidates. Maximal degree in co-relation 9155. Up to 4046 conditions per place. [2023-11-23 21:45:10,447 INFO L140 encePairwiseOnDemand]: 133/138 looper letters, 81 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2023-11-23 21:45:10,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 127 transitions, 456 flow [2023-11-23 21:45:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:45:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:45:10,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-11-23 21:45:10,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6545893719806763 [2023-11-23 21:45:10,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-11-23 21:45:10,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-11-23 21:45:10,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:10,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-11-23 21:45:10,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:10,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:10,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:10,455 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 236 flow. Second operand 3 states and 271 transitions. [2023-11-23 21:45:10,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 127 transitions, 456 flow [2023-11-23 21:45:10,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 127 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:45:10,470 INFO L231 Difference]: Finished difference. Result has 105 places, 99 transitions, 234 flow [2023-11-23 21:45:10,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=105, PETRI_TRANSITIONS=99} [2023-11-23 21:45:10,471 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -23 predicate places. [2023-11-23 21:45:10,472 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 99 transitions, 234 flow [2023-11-23 21:45:10,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:10,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:10,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:10,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:45:10,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:10,681 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:45:10,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash 204885649, now seen corresponding path program 1 times [2023-11-23 21:45:10,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:45:10,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970977639] [2023-11-23 21:45:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:10,683 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 [2023-11-23 21:45:10,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:45:10,685 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:45:10,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-23 21:45:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:10,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:45:10,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:11,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:45:11,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:45:11,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:11,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:11,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:11,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970977639] [2023-11-23 21:45:11,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970977639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:11,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:11,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:45:11,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024166712] [2023-11-23 21:45:11,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:11,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:45:11,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:11,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:45:11,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:45:11,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-23 21:45:11,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 99 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:11,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:11,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-23 21:45:11,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:12,693 INFO L124 PetriNetUnfolderBase]: 3092/6115 cut-off events. [2023-11-23 21:45:12,693 INFO L125 PetriNetUnfolderBase]: For 582/582 co-relation queries the response was YES. [2023-11-23 21:45:12,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11649 conditions, 6115 events. 3092/6115 cut-off events. For 582/582 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 45588 event pairs, 2563 based on Foata normal form. 0/4109 useless extension candidates. Maximal degree in co-relation 9221. Up to 4092 conditions per place. [2023-11-23 21:45:12,739 INFO L140 encePairwiseOnDemand]: 133/138 looper letters, 83 selfloop transitions, 3 changer transitions 0/125 dead transitions. [2023-11-23 21:45:12,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 125 transitions, 458 flow [2023-11-23 21:45:12,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:45:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:45:12,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-11-23 21:45:12,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5778985507246377 [2023-11-23 21:45:12,743 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-11-23 21:45:12,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-11-23 21:45:12,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:12,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-11-23 21:45:12,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:12,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:12,748 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:12,748 INFO L175 Difference]: Start difference. First operand has 105 places, 99 transitions, 234 flow. Second operand 4 states and 319 transitions. [2023-11-23 21:45:12,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 125 transitions, 458 flow [2023-11-23 21:45:12,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 125 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:45:12,760 INFO L231 Difference]: Finished difference. Result has 104 places, 97 transitions, 230 flow [2023-11-23 21:45:12,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=104, PETRI_TRANSITIONS=97} [2023-11-23 21:45:12,764 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -24 predicate places. [2023-11-23 21:45:12,764 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 97 transitions, 230 flow [2023-11-23 21:45:12,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:12,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:12,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:12,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-23 21:45:12,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:12,972 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:45:12,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:12,972 INFO L85 PathProgramCache]: Analyzing trace with hash 204886323, now seen corresponding path program 1 times [2023-11-23 21:45:12,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:45:12,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838396562] [2023-11-23 21:45:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:12,974 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 [2023-11-23 21:45:12,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:45:12,975 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:45:13,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-23 21:45:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:13,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:45:13,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:13,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:45:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:13,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:13,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:13,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838396562] [2023-11-23 21:45:13,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838396562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:13,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:13,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:45:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92984945] [2023-11-23 21:45:13,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:13,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:45:13,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:13,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:45:13,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:45:13,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-23 21:45:13,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 97 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:13,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:13,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-23 21:45:13,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:15,354 INFO L124 PetriNetUnfolderBase]: 2554/6390 cut-off events. [2023-11-23 21:45:15,355 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2023-11-23 21:45:15,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10995 conditions, 6390 events. 2554/6390 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 58060 event pairs, 303 based on Foata normal form. 0/4388 useless extension candidates. Maximal degree in co-relation 8171. Up to 2287 conditions per place. [2023-11-23 21:45:15,392 INFO L140 encePairwiseOnDemand]: 126/138 looper letters, 141 selfloop transitions, 13 changer transitions 1/194 dead transitions. [2023-11-23 21:45:15,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 194 transitions, 747 flow [2023-11-23 21:45:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:45:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 21:45:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 626 transitions. [2023-11-23 21:45:15,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670289855072463 [2023-11-23 21:45:15,396 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 626 transitions. [2023-11-23 21:45:15,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 626 transitions. [2023-11-23 21:45:15,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:15,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 626 transitions. [2023-11-23 21:45:15,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.25) internal successors, (626), 8 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:15,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 138.0) internal successors, (1242), 9 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:15,404 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 138.0) internal successors, (1242), 9 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:15,404 INFO L175 Difference]: Start difference. First operand has 104 places, 97 transitions, 230 flow. Second operand 8 states and 626 transitions. [2023-11-23 21:45:15,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 194 transitions, 747 flow [2023-11-23 21:45:15,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 194 transitions, 741 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:45:15,416 INFO L231 Difference]: Finished difference. Result has 113 places, 105 transitions, 321 flow [2023-11-23 21:45:15,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=321, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2023-11-23 21:45:15,418 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -15 predicate places. [2023-11-23 21:45:15,418 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 321 flow [2023-11-23 21:45:15,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:15,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:15,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:15,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:45:15,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:15,621 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:45:15,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:15,622 INFO L85 PathProgramCache]: Analyzing trace with hash 204886324, now seen corresponding path program 1 times [2023-11-23 21:45:15,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:45:15,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727434109] [2023-11-23 21:45:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:15,623 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 [2023-11-23 21:45:15,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:45:15,624 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:45:15,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-23 21:45:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:15,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:45:15,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:15,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:45:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:16,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:16,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:16,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727434109] [2023-11-23 21:45:16,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727434109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:16,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:16,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:45:16,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622642002] [2023-11-23 21:45:16,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:16,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:45:16,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:16,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:45:16,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:45:16,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 138 [2023-11-23 21:45:16,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:16,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:16,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 138 [2023-11-23 21:45:16,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:18,115 INFO L124 PetriNetUnfolderBase]: 1721/4387 cut-off events. [2023-11-23 21:45:18,116 INFO L125 PetriNetUnfolderBase]: For 1863/1863 co-relation queries the response was YES. [2023-11-23 21:45:18,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8729 conditions, 4387 events. 1721/4387 cut-off events. For 1863/1863 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 37512 event pairs, 95 based on Foata normal form. 450/3832 useless extension candidates. Maximal degree in co-relation 7593. Up to 1957 conditions per place. [2023-11-23 21:45:18,139 INFO L140 encePairwiseOnDemand]: 130/138 looper letters, 124 selfloop transitions, 10 changer transitions 2/177 dead transitions. [2023-11-23 21:45:18,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 177 transitions, 753 flow [2023-11-23 21:45:18,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:45:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 21:45:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 557 transitions. [2023-11-23 21:45:18,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5766045548654244 [2023-11-23 21:45:18,143 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 557 transitions. [2023-11-23 21:45:18,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 557 transitions. [2023-11-23 21:45:18,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:18,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 557 transitions. [2023-11-23 21:45:18,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:18,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:18,151 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:18,152 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 321 flow. Second operand 7 states and 557 transitions. [2023-11-23 21:45:18,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 177 transitions, 753 flow [2023-11-23 21:45:18,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 177 transitions, 751 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-23 21:45:18,170 INFO L231 Difference]: Finished difference. Result has 122 places, 107 transitions, 370 flow [2023-11-23 21:45:18,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=370, PETRI_PLACES=122, PETRI_TRANSITIONS=107} [2023-11-23 21:45:18,171 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -6 predicate places. [2023-11-23 21:45:18,171 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 107 transitions, 370 flow [2023-11-23 21:45:18,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:18,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:18,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:18,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:45:18,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:18,378 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:45:18,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash 206410360, now seen corresponding path program 1 times [2023-11-23 21:45:18,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:45:18,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490622519] [2023-11-23 21:45:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:18,379 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 [2023-11-23 21:45:18,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:45:18,380 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:45:18,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-23 21:45:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:18,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:45:18,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:18,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:45:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:18,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:18,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490622519] [2023-11-23 21:45:18,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490622519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:18,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:18,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:45:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323412910] [2023-11-23 21:45:18,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:18,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:45:18,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:45:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:45:18,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 138 [2023-11-23 21:45:18,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 107 transitions, 370 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:18,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:18,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 138 [2023-11-23 21:45:18,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:19,601 INFO L124 PetriNetUnfolderBase]: 1973/3909 cut-off events. [2023-11-23 21:45:19,601 INFO L125 PetriNetUnfolderBase]: For 3595/3595 co-relation queries the response was YES. [2023-11-23 21:45:19,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9344 conditions, 3909 events. 1973/3909 cut-off events. For 3595/3595 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 26446 event pairs, 1470 based on Foata normal form. 0/3262 useless extension candidates. Maximal degree in co-relation 8204. Up to 2473 conditions per place. [2023-11-23 21:45:19,624 INFO L140 encePairwiseOnDemand]: 129/138 looper letters, 76 selfloop transitions, 7 changer transitions 0/116 dead transitions. [2023-11-23 21:45:19,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 116 transitions, 558 flow [2023-11-23 21:45:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:45:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:45:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-11-23 21:45:19,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2023-11-23 21:45:19,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-11-23 21:45:19,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-11-23 21:45:19,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:19,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-11-23 21:45:19,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:19,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:19,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:19,631 INFO L175 Difference]: Start difference. First operand has 122 places, 107 transitions, 370 flow. Second operand 3 states and 246 transitions. [2023-11-23 21:45:19,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 116 transitions, 558 flow [2023-11-23 21:45:19,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 116 transitions, 546 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 21:45:19,646 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 362 flow [2023-11-23 21:45:19,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2023-11-23 21:45:19,647 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -13 predicate places. [2023-11-23 21:45:19,647 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 362 flow [2023-11-23 21:45:19,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:19,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:19,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:19,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:45:19,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:19,854 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:45:19,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:19,854 INFO L85 PathProgramCache]: Analyzing trace with hash 206410361, now seen corresponding path program 1 times [2023-11-23 21:45:19,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:45:19,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133062982] [2023-11-23 21:45:19,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:19,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:19,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:45:19,857 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:45:19,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-23 21:45:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:20,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:45:20,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:20,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:45:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:20,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:20,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:20,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133062982] [2023-11-23 21:45:20,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133062982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:20,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:20,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:45:20,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493704048] [2023-11-23 21:45:20,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:20,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:45:20,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:20,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:45:20,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:45:20,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-23 21:45:20,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:20,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:20,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-23 21:45:20,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:21,074 INFO L124 PetriNetUnfolderBase]: 1721/3526 cut-off events. [2023-11-23 21:45:21,074 INFO L125 PetriNetUnfolderBase]: For 3143/3143 co-relation queries the response was YES. [2023-11-23 21:45:21,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 3526 events. 1721/3526 cut-off events. For 3143/3143 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 24376 event pairs, 1073 based on Foata normal form. 146/3082 useless extension candidates. Maximal degree in co-relation 7258. Up to 1747 conditions per place. [2023-11-23 21:45:21,100 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 87 selfloop transitions, 6 changer transitions 0/123 dead transitions. [2023-11-23 21:45:21,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 123 transitions, 596 flow [2023-11-23 21:45:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:45:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:45:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-11-23 21:45:21,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2023-11-23 21:45:21,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-11-23 21:45:21,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-11-23 21:45:21,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:21,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-11-23 21:45:21,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:21,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:21,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:21,108 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 362 flow. Second operand 3 states and 261 transitions. [2023-11-23 21:45:21,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 123 transitions, 596 flow [2023-11-23 21:45:21,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 123 transitions, 582 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:45:21,125 INFO L231 Difference]: Finished difference. Result has 116 places, 102 transitions, 374 flow [2023-11-23 21:45:21,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=116, PETRI_TRANSITIONS=102} [2023-11-23 21:45:21,126 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -12 predicate places. [2023-11-23 21:45:21,127 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 102 transitions, 374 flow [2023-11-23 21:45:21,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:21,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:21,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:21,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-23 21:45:21,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:21,333 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:45:21,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash 600394395, now seen corresponding path program 1 times [2023-11-23 21:45:21,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:45:21,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143464449] [2023-11-23 21:45:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:21,334 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 [2023-11-23 21:45:21,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:45:21,336 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:45:21,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-23 21:45:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:21,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:45:21,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:21,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:45:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:21,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:21,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:21,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143464449] [2023-11-23 21:45:21,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143464449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:21,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:21,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:45:21,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296786921] [2023-11-23 21:45:21,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:21,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:45:21,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:21,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:45:21,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:45:22,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-23 21:45:22,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 102 transitions, 374 flow. Second operand has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:22,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:22,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-23 21:45:22,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:23,385 INFO L124 PetriNetUnfolderBase]: 1560/3371 cut-off events. [2023-11-23 21:45:23,385 INFO L125 PetriNetUnfolderBase]: For 2846/2846 co-relation queries the response was YES. [2023-11-23 21:45:23,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8057 conditions, 3371 events. 1560/3371 cut-off events. For 2846/2846 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 24124 event pairs, 159 based on Foata normal form. 0/2956 useless extension candidates. Maximal degree in co-relation 6907. Up to 1169 conditions per place. [2023-11-23 21:45:23,403 INFO L140 encePairwiseOnDemand]: 126/138 looper letters, 125 selfloop transitions, 17 changer transitions 0/176 dead transitions. [2023-11-23 21:45:23,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 176 transitions, 939 flow [2023-11-23 21:45:23,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:45:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 21:45:23,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 601 transitions. [2023-11-23 21:45:23,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443840579710145 [2023-11-23 21:45:23,409 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 601 transitions. [2023-11-23 21:45:23,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 601 transitions. [2023-11-23 21:45:23,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:23,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 601 transitions. [2023-11-23 21:45:23,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.125) internal successors, (601), 8 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:23,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 138.0) internal successors, (1242), 9 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:23,416 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 138.0) internal successors, (1242), 9 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:23,417 INFO L175 Difference]: Start difference. First operand has 116 places, 102 transitions, 374 flow. Second operand 8 states and 601 transitions. [2023-11-23 21:45:23,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 176 transitions, 939 flow [2023-11-23 21:45:23,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 176 transitions, 922 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 21:45:23,434 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 491 flow [2023-11-23 21:45:23,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=491, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2023-11-23 21:45:23,436 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -3 predicate places. [2023-11-23 21:45:23,436 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 491 flow [2023-11-23 21:45:23,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:23,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:23,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:23,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-23 21:45:23,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:23,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:45:23,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:23,637 INFO L85 PathProgramCache]: Analyzing trace with hash 600394396, now seen corresponding path program 1 times [2023-11-23 21:45:23,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:45:23,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28418282] [2023-11-23 21:45:23,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:23,638 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 [2023-11-23 21:45:23,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:45:23,641 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:45:23,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-23 21:45:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:23,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:45:23,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:23,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:45:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:24,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:24,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:24,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28418282] [2023-11-23 21:45:24,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28418282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:24,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:24,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:45:24,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617406213] [2023-11-23 21:45:24,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:24,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:45:24,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:24,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:45:24,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:45:24,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 138 [2023-11-23 21:45:24,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 491 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:24,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:24,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 138 [2023-11-23 21:45:24,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:45:25,733 INFO L124 PetriNetUnfolderBase]: 1070/2367 cut-off events. [2023-11-23 21:45:25,733 INFO L125 PetriNetUnfolderBase]: For 3384/3384 co-relation queries the response was YES. [2023-11-23 21:45:25,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6452 conditions, 2367 events. 1070/2367 cut-off events. For 3384/3384 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15746 event pairs, 261 based on Foata normal form. 292/2650 useless extension candidates. Maximal degree in co-relation 5576. Up to 1331 conditions per place. [2023-11-23 21:45:25,746 INFO L140 encePairwiseOnDemand]: 130/138 looper letters, 111 selfloop transitions, 14 changer transitions 1/162 dead transitions. [2023-11-23 21:45:25,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 162 transitions, 937 flow [2023-11-23 21:45:25,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:45:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 21:45:25,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 533 transitions. [2023-11-23 21:45:25,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55175983436853 [2023-11-23 21:45:25,749 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 533 transitions. [2023-11-23 21:45:25,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 533 transitions. [2023-11-23 21:45:25,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:45:25,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 533 transitions. [2023-11-23 21:45:25,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.14285714285714) internal successors, (533), 7 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:25,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:25,754 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:25,754 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 491 flow. Second operand 7 states and 533 transitions. [2023-11-23 21:45:25,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 162 transitions, 937 flow [2023-11-23 21:45:25,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 162 transitions, 932 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-23 21:45:25,767 INFO L231 Difference]: Finished difference. Result has 133 places, 114 transitions, 560 flow [2023-11-23 21:45:25,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=560, PETRI_PLACES=133, PETRI_TRANSITIONS=114} [2023-11-23 21:45:25,768 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, 5 predicate places. [2023-11-23 21:45:25,768 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 114 transitions, 560 flow [2023-11-23 21:45:25,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:25,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:45:25,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:45:25,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-23 21:45:25,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:45:25,974 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:45:25,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:45:25,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1505968442, now seen corresponding path program 1 times [2023-11-23 21:45:25,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:45:25,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755848544] [2023-11-23 21:45:25,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:45:25,975 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 [2023-11-23 21:45:25,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:45:25,976 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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) [2023-11-23 21:45:25,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0be0f370-3b7c-4d98-af0c-032137804468/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-23 21:45:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:45:26,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:45:26,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:45:26,255 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:45:26,256 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:45:26,257 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:45:26,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 41 [2023-11-23 21:45:26,322 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:45:26,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:45:26,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 73 [2023-11-23 21:45:26,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:45:26,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 141 treesize of output 57 [2023-11-23 21:45:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:45:26,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:45:26,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:45:26,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755848544] [2023-11-23 21:45:26,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755848544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:45:26,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:45:26,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:45:26,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351403331] [2023-11-23 21:45:26,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:45:26,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:45:26,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:45:26,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:45:26,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:45:27,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-23 21:45:27,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 114 transitions, 560 flow. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:45:27,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:45:27,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-23 21:45:27,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand