./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/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_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme --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 0.2.4-dev-0e0057c [2023-11-26 12:00:10,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:10,666 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 12:00:10,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:10,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:10,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:10,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:10,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:10,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:10,753 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:10,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:10,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:10,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:10,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:10,758 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:10,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:10,760 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:10,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:10,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:10,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:10,762 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:00:10,763 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:00:10,763 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:00:10,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:10,764 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:00:10,765 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:00:10,766 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:10,766 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:10,767 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:10,768 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:10,770 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:10,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:10,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:10,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:10,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:10,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:10,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:10,772 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:10,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:10,784 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:10,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:10,785 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_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2023-11-26 12:00:11,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:11,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:11,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:11,206 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:11,206 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:11,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-26 12:00:14,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:14,764 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:14,764 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-26 12:00:14,805 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/data/25793ee13/86a180233f37480aab5b74da8cd2c542/FLAG71b2bf6a1 [2023-11-26 12:00:14,821 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/data/25793ee13/86a180233f37480aab5b74da8cd2c542 [2023-11-26 12:00:14,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:14,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:14,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:14,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:14,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:14,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:14" (1/1) ... [2023-11-26 12:00:14,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a5074c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:14, skipping insertion in model container [2023-11-26 12:00:14,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:14" (1/1) ... [2023-11-26 12:00:14,928 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:15,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:15,568 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) [2023-11-26 12:00:15,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@276206f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:15, skipping insertion in model container [2023-11-26 12:00:15,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:15,570 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 12:00:15,572 INFO L158 Benchmark]: Toolchain (without parser) took 746.03ms. Allocated memory is still 153.1MB. Free memory was 116.8MB in the beginning and 96.7MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 12:00:15,573 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:00:15,573 INFO L158 Benchmark]: CACSL2BoogieTranslator took 743.41ms. Allocated memory is still 153.1MB. Free memory was 116.8MB in the beginning and 96.7MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 12:00:15,575 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory is still 91.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 743.41ms. Allocated memory is still 153.1MB. Free memory was 116.8MB in the beginning and 96.7MB in the end (delta: 20.1MB). 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_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/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_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme --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 0.2.4-dev-0e0057c [2023-11-26 12:00:18,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:18,244 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 12:00:18,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:18,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:18,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:18,303 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:18,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:18,305 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:18,312 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:18,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:18,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:18,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:18,316 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:18,316 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:18,317 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:18,317 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:18,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:18,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:18,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:18,320 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:00:18,321 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:00:18,321 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:00:18,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:18,322 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:00:18,323 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 12:00:18,323 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 12:00:18,323 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:00:18,324 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:18,324 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:18,326 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:18,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:18,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:18,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:18,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:18,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:18,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:18,329 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 12:00:18,330 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 12:00:18,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:18,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:18,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:18,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:18,331 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 12:00:18,332 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_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2023-11-26 12:00:18,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:18,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:18,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:18,729 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:18,729 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:18,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-26 12:00:21,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:22,338 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:22,339 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-26 12:00:22,385 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/data/eb4f48924/e0f96543c00c4c1b8eeade11077eecda/FLAG254670850 [2023-11-26 12:00:22,400 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/data/eb4f48924/e0f96543c00c4c1b8eeade11077eecda [2023-11-26 12:00:22,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:22,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:22,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:22,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:22,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:22,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:22" (1/1) ... [2023-11-26 12:00:22,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4899fd53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:22, skipping insertion in model container [2023-11-26 12:00:22,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:22" (1/1) ... [2023-11-26 12:00:22,538 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:23,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:23,258 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 12:00:23,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:23,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:23,374 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:23,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:23,493 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:23,494 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:23,502 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:23,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23 WrapperNode [2023-11-26 12:00:23,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:23,504 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:23,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:23,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:23,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (1/1) ... [2023-11-26 12:00:23,541 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (1/1) ... [2023-11-26 12:00:23,601 INFO L138 Inliner]: procedures = 250, calls = 52, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 151 [2023-11-26 12:00:23,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:23,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:23,604 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:23,604 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:23,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (1/1) ... [2023-11-26 12:00:23,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (1/1) ... [2023-11-26 12:00:23,639 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (1/1) ... [2023-11-26 12:00:23,672 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 13, 3, 3, 2]. 57 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 0, 1, 1, 0]. The 10 writes are split as follows [0, 6, 1, 1, 2]. [2023-11-26 12:00:23,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (1/1) ... [2023-11-26 12:00:23,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (1/1) ... [2023-11-26 12:00:23,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (1/1) ... [2023-11-26 12:00:23,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (1/1) ... [2023-11-26 12:00:23,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (1/1) ... [2023-11-26 12:00:23,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (1/1) ... [2023-11-26 12:00:23,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:23,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:23,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:23,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:23,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (1/1) ... [2023-11-26 12:00:23,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:23,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:23,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:23,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 12:00:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 12:00:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 12:00:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 12:00:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-26 12:00:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-26 12:00:23,862 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-26 12:00:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:00:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:00:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:00:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 12:00:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 12:00:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 12:00:23,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 12:00:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-26 12:00:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 12:00:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 12:00:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 12:00:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 12:00:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-26 12:00:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-11-26 12:00:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-11-26 12:00:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-11-26 12:00:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-11-26 12:00:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-11-26 12:00:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:00:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 12:00:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 12:00:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 12:00:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 12:00:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 12:00:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:23,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:23,872 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:00:24,310 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:24,312 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:25,046 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:25,330 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:25,330 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:00:25,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:25 BoogieIcfgContainer [2023-11-26 12:00:25,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:25,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:25,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:25,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:25,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:22" (1/3) ... [2023-11-26 12:00:25,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48af39f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:25, skipping insertion in model container [2023-11-26 12:00:25,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:23" (2/3) ... [2023-11-26 12:00:25,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48af39f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:25, skipping insertion in model container [2023-11-26 12:00:25,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:25" (3/3) ... [2023-11-26 12:00:25,343 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2023-11-26 12:00:25,365 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:25,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-11-26 12:00:25,366 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:00:25,481 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 12:00:25,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 138 transitions, 290 flow [2023-11-26 12:00:25,639 INFO L124 PetriNetUnfolderBase]: 18/174 cut-off events. [2023-11-26 12:00:25,639 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 12:00:25,644 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 561 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. [2023-11-26 12:00:25,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 138 transitions, 290 flow [2023-11-26 12:00:25,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 136 transitions, 284 flow [2023-11-26 12:00:25,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:25,683 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;@10ffdfa2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:25,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-11-26 12:00:25,687 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:00:25,687 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-26 12:00:25,688 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:00:25,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:25,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:00:25,689 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)] === [2023-11-26 12:00:25,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash 518871, now seen corresponding path program 1 times [2023-11-26 12:00:25,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:25,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795990036] [2023-11-26 12:00:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:25,718 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 [2023-11-26 12:00:25,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:25,741 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:25,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:25,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:00:25,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:26,047 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 [2023-11-26 12:00:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:26,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:26,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:26,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795990036] [2023-11-26 12:00:26,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795990036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:26,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:26,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728886292] [2023-11-26 12:00:26,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:26,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:26,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:26,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:26,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:26,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-26 12:00:26,289 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) [2023-11-26 12:00:26,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:26,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-26 12:00:26,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:28,034 INFO L124 PetriNetUnfolderBase]: 3071/8154 cut-off events. [2023-11-26 12:00:28,034 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-26 12:00:28,053 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 82888 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. [2023-11-26 12:00:28,118 INFO L140 encePairwiseOnDemand]: 120/138 looper letters, 78 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2023-11-26 12:00:28,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 136 transitions, 444 flow [2023-11-26 12:00:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-11-26 12:00:28,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2023-11-26 12:00:28,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-11-26 12:00:28,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-11-26 12:00:28,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:28,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-11-26 12:00:28,157 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) [2023-11-26 12:00:28,163 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) [2023-11-26 12:00:28,164 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) [2023-11-26 12:00:28,166 INFO L175 Difference]: Start difference. First operand has 128 places, 136 transitions, 284 flow. Second operand 3 states and 270 transitions. [2023-11-26 12:00:28,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 136 transitions, 444 flow [2023-11-26 12:00:28,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 136 transitions, 436 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:00:28,180 INFO L231 Difference]: Finished difference. Result has 116 places, 114 transitions, 236 flow [2023-11-26 12:00:28,183 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} [2023-11-26 12:00:28,188 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -12 predicate places. [2023-11-26 12:00:28,188 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 114 transitions, 236 flow [2023-11-26 12:00:28,189 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) [2023-11-26 12:00:28,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:28,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:00:28,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:28,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:28,394 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)] === [2023-11-26 12:00:28,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash 518872, now seen corresponding path program 1 times [2023-11-26 12:00:28,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:28,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125234052] [2023-11-26 12:00:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:28,397 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 [2023-11-26 12:00:28,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:28,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:28,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:28,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:00:28,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:28,587 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 [2023-11-26 12:00:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:28,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:28,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:28,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125234052] [2023-11-26 12:00:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125234052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:28,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:28,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:28,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272101733] [2023-11-26 12:00:28,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:28,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:28,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:28,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:28,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:28,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 138 [2023-11-26 12:00:28,872 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) [2023-11-26 12:00:28,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:28,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 138 [2023-11-26 12:00:28,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:30,455 INFO L124 PetriNetUnfolderBase]: 3071/8150 cut-off events. [2023-11-26 12:00:30,455 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-11-26 12:00:30,467 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 82880 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. [2023-11-26 12:00:30,524 INFO L140 encePairwiseOnDemand]: 132/138 looper letters, 76 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-11-26 12:00:30,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 132 transitions, 428 flow [2023-11-26 12:00:30,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-11-26 12:00:30,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6328502415458938 [2023-11-26 12:00:30,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-11-26 12:00:30,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-11-26 12:00:30,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:30,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-11-26 12:00:30,529 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) [2023-11-26 12:00:30,533 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) [2023-11-26 12:00:30,534 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) [2023-11-26 12:00:30,534 INFO L175 Difference]: Start difference. First operand has 116 places, 114 transitions, 236 flow. Second operand 3 states and 262 transitions. [2023-11-26 12:00:30,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 132 transitions, 428 flow [2023-11-26 12:00:30,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 132 transitions, 424 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:30,542 INFO L231 Difference]: Finished difference. Result has 112 places, 110 transitions, 228 flow [2023-11-26 12:00:30,543 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} [2023-11-26 12:00:30,544 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -16 predicate places. [2023-11-26 12:00:30,544 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 110 transitions, 228 flow [2023-11-26 12:00:30,544 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) [2023-11-26 12:00:30,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:30,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 12:00:30,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:30,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:30,750 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)] === [2023-11-26 12:00:30,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:30,751 INFO L85 PathProgramCache]: Analyzing trace with hash 16083763, now seen corresponding path program 1 times [2023-11-26 12:00:30,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:30,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297032864] [2023-11-26 12:00:30,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:30,753 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 [2023-11-26 12:00:30,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:30,754 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:30,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:30,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:30,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:30,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:30,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:30,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:30,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297032864] [2023-11-26 12:00:30,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297032864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:30,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:30,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:30,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52916712] [2023-11-26 12:00:30,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:30,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:30,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:30,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:30,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:30,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 138 [2023-11-26 12:00:30,920 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) [2023-11-26 12:00:30,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:30,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 138 [2023-11-26 12:00:30,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:32,104 INFO L124 PetriNetUnfolderBase]: 3070/5697 cut-off events. [2023-11-26 12:00:32,104 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-11-26 12:00:32,112 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 40141 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. [2023-11-26 12:00:32,146 INFO L140 encePairwiseOnDemand]: 135/138 looper letters, 76 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-11-26 12:00:32,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 131 transitions, 426 flow [2023-11-26 12:00:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-11-26 12:00:32,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6473429951690821 [2023-11-26 12:00:32,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-11-26 12:00:32,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-11-26 12:00:32,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:32,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-11-26 12:00:32,151 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) [2023-11-26 12:00:32,152 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) [2023-11-26 12:00:32,153 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) [2023-11-26 12:00:32,153 INFO L175 Difference]: Start difference. First operand has 112 places, 110 transitions, 228 flow. Second operand 3 states and 268 transitions. [2023-11-26 12:00:32,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 131 transitions, 426 flow [2023-11-26 12:00:32,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 131 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:32,161 INFO L231 Difference]: Finished difference. Result has 112 places, 109 transitions, 226 flow [2023-11-26 12:00:32,161 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} [2023-11-26 12:00:32,163 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -16 predicate places. [2023-11-26 12:00:32,163 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 109 transitions, 226 flow [2023-11-26 12:00:32,163 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) [2023-11-26 12:00:32,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:32,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:32,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-26 12:00:32,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:32,368 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)] === [2023-11-26 12:00:32,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:32,369 INFO L85 PathProgramCache]: Analyzing trace with hash -938013520, now seen corresponding path program 1 times [2023-11-26 12:00:32,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:32,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742041247] [2023-11-26 12:00:32,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:32,371 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 [2023-11-26 12:00:32,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:32,372 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:32,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:32,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 12:00:32,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:32,624 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:32,625 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:32,625 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:32,630 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 [2023-11-26 12:00:32,708 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:32,709 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:32,736 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:32,736 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 78 treesize of output 83 [2023-11-26 12:00:32,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:32,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 147 treesize of output 57 [2023-11-26 12:00:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:33,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:33,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742041247] [2023-11-26 12:00:33,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742041247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:33,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:33,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:33,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407803351] [2023-11-26 12:00:33,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:33,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:33,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:33,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:33,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:33,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 138 [2023-11-26 12:00:33,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 109 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:33,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 138 [2023-11-26 12:00:33,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:34,930 INFO L124 PetriNetUnfolderBase]: 3598/6718 cut-off events. [2023-11-26 12:00:34,931 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2023-11-26 12:00:34,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12572 conditions, 6718 events. 3598/6718 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 48077 event pairs, 2343 based on Foata normal form. 1/4508 useless extension candidates. Maximal degree in co-relation 11603. Up to 5605 conditions per place. [2023-11-26 12:00:34,975 INFO L140 encePairwiseOnDemand]: 130/138 looper letters, 64 selfloop transitions, 7 changer transitions 0/118 dead transitions. [2023-11-26 12:00:34,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 118 transitions, 387 flow [2023-11-26 12:00:34,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:34,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 372 transitions. [2023-11-26 12:00:34,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391304347826087 [2023-11-26 12:00:34,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 372 transitions. [2023-11-26 12:00:34,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 372 transitions. [2023-11-26 12:00:34,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:34,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 372 transitions. [2023-11-26 12:00:34,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,983 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) [2023-11-26 12:00:34,983 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) [2023-11-26 12:00:34,984 INFO L175 Difference]: Start difference. First operand has 112 places, 109 transitions, 226 flow. Second operand 5 states and 372 transitions. [2023-11-26 12:00:34,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 118 transitions, 387 flow [2023-11-26 12:00:34,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 118 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:34,997 INFO L231 Difference]: Finished difference. Result has 112 places, 109 transitions, 248 flow [2023-11-26 12:00:34,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=112, PETRI_TRANSITIONS=109} [2023-11-26 12:00:34,999 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -16 predicate places. [2023-11-26 12:00:34,999 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 109 transitions, 248 flow [2023-11-26 12:00:34,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:35,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:35,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:35,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:35,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-26 12:00:35,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:35,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1256838624, now seen corresponding path program 1 times [2023-11-26 12:00:35,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:35,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990972055] [2023-11-26 12:00:35,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:35,208 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 [2023-11-26 12:00:35,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:35,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:35,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:35,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:00:35,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:35,479 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:35,483 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:35,484 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:35,487 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 [2023-11-26 12:00:35,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:35,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 117 treesize of output 45 [2023-11-26 12:00:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:35,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:35,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:35,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990972055] [2023-11-26 12:00:35,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990972055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:35,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:35,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:35,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174167623] [2023-11-26 12:00:35,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:35,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:35,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:35,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:35,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:36,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 138 [2023-11-26 12:00:36,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 109 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:36,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 138 [2023-11-26 12:00:36,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:37,756 INFO L124 PetriNetUnfolderBase]: 3598/6715 cut-off events. [2023-11-26 12:00:37,757 INFO L125 PetriNetUnfolderBase]: For 438/438 co-relation queries the response was YES. [2023-11-26 12:00:37,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12947 conditions, 6715 events. 3598/6715 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 48031 event pairs, 2343 based on Foata normal form. 1/4845 useless extension candidates. Maximal degree in co-relation 6862. Up to 5605 conditions per place. [2023-11-26 12:00:37,811 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 63 selfloop transitions, 6 changer transitions 0/115 dead transitions. [2023-11-26 12:00:37,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 115 transitions, 399 flow [2023-11-26 12:00:37,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:37,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2023-11-26 12:00:37,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688405797101449 [2023-11-26 12:00:37,814 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2023-11-26 12:00:37,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2023-11-26 12:00:37,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:37,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2023-11-26 12:00:37,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:37,817 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) [2023-11-26 12:00:37,818 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) [2023-11-26 12:00:37,819 INFO L175 Difference]: Start difference. First operand has 112 places, 109 transitions, 248 flow. Second operand 4 states and 314 transitions. [2023-11-26 12:00:37,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 115 transitions, 399 flow [2023-11-26 12:00:37,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 115 transitions, 391 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:00:37,824 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 246 flow [2023-11-26 12:00:37,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2023-11-26 12:00:37,827 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -19 predicate places. [2023-11-26 12:00:37,827 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 246 flow [2023-11-26 12:00:37,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:37,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:37,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:37,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:38,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:38,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-26 12:00:38,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:38,035 INFO L85 PathProgramCache]: Analyzing trace with hash -307363498, now seen corresponding path program 1 times [2023-11-26 12:00:38,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:38,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210664431] [2023-11-26 12:00:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:38,036 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 [2023-11-26 12:00:38,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:38,039 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:38,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:00:38,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:38,374 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-26 12:00:38,375 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 [2023-11-26 12:00:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:38,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:38,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210664431] [2023-11-26 12:00:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210664431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:38,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:38,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:00:38,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516155201] [2023-11-26 12:00:38,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:38,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:38,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:38,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:38,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:38,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 138 [2023-11-26 12:00:38,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 246 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) [2023-11-26 12:00:38,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:38,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 138 [2023-11-26 12:00:38,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:39,818 INFO L124 PetriNetUnfolderBase]: 3070/5792 cut-off events. [2023-11-26 12:00:39,819 INFO L125 PetriNetUnfolderBase]: For 428/428 co-relation queries the response was YES. [2023-11-26 12:00:39,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11165 conditions, 5792 events. 3070/5792 cut-off events. For 428/428 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 41348 event pairs, 2397 based on Foata normal form. 146/4372 useless extension candidates. Maximal degree in co-relation 7299. Up to 4046 conditions per place. [2023-11-26 12:00:39,867 INFO L140 encePairwiseOnDemand]: 133/138 looper letters, 83 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2023-11-26 12:00:39,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 133 transitions, 476 flow [2023-11-26 12:00:39,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:39,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-11-26 12:00:39,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6545893719806763 [2023-11-26 12:00:39,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-11-26 12:00:39,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-11-26 12:00:39,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:39,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-11-26 12:00:39,871 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) [2023-11-26 12:00:39,873 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) [2023-11-26 12:00:39,874 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) [2023-11-26 12:00:39,874 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 246 flow. Second operand 3 states and 271 transitions. [2023-11-26 12:00:39,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 133 transitions, 476 flow [2023-11-26 12:00:39,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 133 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:39,880 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 249 flow [2023-11-26 12:00:39,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2023-11-26 12:00:39,882 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -20 predicate places. [2023-11-26 12:00:39,883 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 249 flow [2023-11-26 12:00:39,883 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) [2023-11-26 12:00:39,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:39,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:39,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:40,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:40,093 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-26 12:00:40,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:40,094 INFO L85 PathProgramCache]: Analyzing trace with hash -307363497, now seen corresponding path program 1 times [2023-11-26 12:00:40,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:40,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879463393] [2023-11-26 12:00:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:40,095 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 [2023-11-26 12:00:40,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:40,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:40,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:40,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:00:40,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:40,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:40,431 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 [2023-11-26 12:00:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:40,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:40,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:40,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879463393] [2023-11-26 12:00:40,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879463393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:40,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:40,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:40,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267842931] [2023-11-26 12:00:40,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:40,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:40,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:40,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:40,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:40,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-26 12:00:40,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 249 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) [2023-11-26 12:00:40,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:40,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-26 12:00:40,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:42,082 INFO L124 PetriNetUnfolderBase]: 3334/6190 cut-off events. [2023-11-26 12:00:42,082 INFO L125 PetriNetUnfolderBase]: For 590/590 co-relation queries the response was YES. [2023-11-26 12:00:42,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12256 conditions, 6190 events. 3334/6190 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 43800 event pairs, 2661 based on Foata normal form. 0/4510 useless extension candidates. Maximal degree in co-relation 9927. Up to 4456 conditions per place. [2023-11-26 12:00:42,120 INFO L140 encePairwiseOnDemand]: 133/138 looper letters, 85 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2023-11-26 12:00:42,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 131 transitions, 481 flow [2023-11-26 12:00:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-11-26 12:00:42,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5778985507246377 [2023-11-26 12:00:42,123 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-11-26 12:00:42,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-11-26 12:00:42,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:42,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-11-26 12:00:42,125 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) [2023-11-26 12:00:42,126 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) [2023-11-26 12:00:42,127 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) [2023-11-26 12:00:42,127 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 249 flow. Second operand 4 states and 319 transitions. [2023-11-26 12:00:42,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 131 transitions, 481 flow [2023-11-26 12:00:42,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 131 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:42,138 INFO L231 Difference]: Finished difference. Result has 108 places, 103 transitions, 248 flow [2023-11-26 12:00:42,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=108, PETRI_TRANSITIONS=103} [2023-11-26 12:00:42,139 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -20 predicate places. [2023-11-26 12:00:42,139 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 103 transitions, 248 flow [2023-11-26 12:00:42,139 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) [2023-11-26 12:00:42,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:42,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:42,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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)] Ended with exit code 0 [2023-11-26 12:00:42,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:42,346 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-26 12:00:42,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:42,346 INFO L85 PathProgramCache]: Analyzing trace with hash 204887570, now seen corresponding path program 1 times [2023-11-26 12:00:42,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:42,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006126428] [2023-11-26 12:00:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:42,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:42,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:42,350 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:42,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:42,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:00:42,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:42,698 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-26 12:00:42,698 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 [2023-11-26 12:00:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:42,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:42,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:42,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006126428] [2023-11-26 12:00:42,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006126428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:42,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:42,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:00:42,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889822387] [2023-11-26 12:00:42,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:42,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:42,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:42,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:42,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:42,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 138 [2023-11-26 12:00:42,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 103 transitions, 248 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) [2023-11-26 12:00:42,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:42,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 138 [2023-11-26 12:00:42,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:43,800 INFO L124 PetriNetUnfolderBase]: 3070/5773 cut-off events. [2023-11-26 12:00:43,800 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES. [2023-11-26 12:00:43,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11406 conditions, 5773 events. 3070/5773 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 41128 event pairs, 2397 based on Foata normal form. 24/4250 useless extension candidates. Maximal degree in co-relation 9076. Up to 4046 conditions per place. [2023-11-26 12:00:43,837 INFO L140 encePairwiseOnDemand]: 133/138 looper letters, 83 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2023-11-26 12:00:43,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 129 transitions, 476 flow [2023-11-26 12:00:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-11-26 12:00:43,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6545893719806763 [2023-11-26 12:00:43,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-11-26 12:00:43,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-11-26 12:00:43,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:43,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-11-26 12:00:43,841 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) [2023-11-26 12:00:43,842 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) [2023-11-26 12:00:43,843 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) [2023-11-26 12:00:43,843 INFO L175 Difference]: Start difference. First operand has 108 places, 103 transitions, 248 flow. Second operand 3 states and 271 transitions. [2023-11-26 12:00:43,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 129 transitions, 476 flow [2023-11-26 12:00:43,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 129 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:43,852 INFO L231 Difference]: Finished difference. Result has 106 places, 101 transitions, 246 flow [2023-11-26 12:00:43,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=240, 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=3, PETRI_FLOW=246, PETRI_PLACES=106, PETRI_TRANSITIONS=101} [2023-11-26 12:00:43,853 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -22 predicate places. [2023-11-26 12:00:43,853 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 101 transitions, 246 flow [2023-11-26 12:00:43,853 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) [2023-11-26 12:00:43,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:43,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:43,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:44,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:44,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-26 12:00:44,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:44,069 INFO L85 PathProgramCache]: Analyzing trace with hash 204887571, now seen corresponding path program 1 times [2023-11-26 12:00:44,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:44,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961220750] [2023-11-26 12:00:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:44,070 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 [2023-11-26 12:00:44,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:44,071 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:44,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:44,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:00:44,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:44,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:00:44,419 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 [2023-11-26 12:00:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:44,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:44,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961220750] [2023-11-26 12:00:44,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961220750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:44,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:44,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:44,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949181226] [2023-11-26 12:00:44,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:44,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:44,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:44,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:44,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:44,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-26 12:00:44,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 101 transitions, 246 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) [2023-11-26 12:00:44,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:44,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-26 12:00:44,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:45,816 INFO L124 PetriNetUnfolderBase]: 3092/5793 cut-off events. [2023-11-26 12:00:45,816 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2023-11-26 12:00:45,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11620 conditions, 5793 events. 3092/5793 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 41011 event pairs, 2419 based on Foata normal form. 0/4250 useless extension candidates. Maximal degree in co-relation 9144. Up to 4092 conditions per place. [2023-11-26 12:00:45,849 INFO L140 encePairwiseOnDemand]: 133/138 looper letters, 85 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2023-11-26 12:00:45,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 127 transitions, 478 flow [2023-11-26 12:00:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-11-26 12:00:45,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5778985507246377 [2023-11-26 12:00:45,852 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-11-26 12:00:45,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-11-26 12:00:45,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:45,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-11-26 12:00:45,853 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) [2023-11-26 12:00:45,855 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) [2023-11-26 12:00:45,855 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) [2023-11-26 12:00:45,855 INFO L175 Difference]: Start difference. First operand has 106 places, 101 transitions, 246 flow. Second operand 4 states and 319 transitions. [2023-11-26 12:00:45,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 127 transitions, 478 flow [2023-11-26 12:00:45,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 127 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:45,862 INFO L231 Difference]: Finished difference. Result has 105 places, 99 transitions, 242 flow [2023-11-26 12:00:45,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=102, 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=4, PETRI_FLOW=242, PETRI_PLACES=105, PETRI_TRANSITIONS=99} [2023-11-26 12:00:45,863 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -23 predicate places. [2023-11-26 12:00:45,863 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 99 transitions, 242 flow [2023-11-26 12:00:45,863 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) [2023-11-26 12:00:45,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:45,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:45,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:46,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:46,073 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-26 12:00:46,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:46,073 INFO L85 PathProgramCache]: Analyzing trace with hash 204888597, now seen corresponding path program 1 times [2023-11-26 12:00:46,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:46,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821026569] [2023-11-26 12:00:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:46,074 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 [2023-11-26 12:00:46,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:46,075 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:46,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:46,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:00:46,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:46,295 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 [2023-11-26 12:00:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:46,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:46,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:46,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821026569] [2023-11-26 12:00:46,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821026569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:46,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:46,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:46,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739847513] [2023-11-26 12:00:46,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:46,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:46,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:46,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:46,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:46,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-26 12:00:46,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 99 transitions, 242 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) [2023-11-26 12:00:46,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:46,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-26 12:00:46,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:48,240 INFO L124 PetriNetUnfolderBase]: 2554/6078 cut-off events. [2023-11-26 12:00:48,240 INFO L125 PetriNetUnfolderBase]: For 714/714 co-relation queries the response was YES. [2023-11-26 12:00:48,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10956 conditions, 6078 events. 2554/6078 cut-off events. For 714/714 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 52983 event pairs, 455 based on Foata normal form. 0/4491 useless extension candidates. Maximal degree in co-relation 8072. Up to 2287 conditions per place. [2023-11-26 12:00:48,278 INFO L140 encePairwiseOnDemand]: 126/138 looper letters, 143 selfloop transitions, 15 changer transitions 1/198 dead transitions. [2023-11-26 12:00:48,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 198 transitions, 792 flow [2023-11-26 12:00:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:00:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 12:00:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 626 transitions. [2023-11-26 12:00:48,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670289855072463 [2023-11-26 12:00:48,282 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 626 transitions. [2023-11-26 12:00:48,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 626 transitions. [2023-11-26 12:00:48,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:48,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 626 transitions. [2023-11-26 12:00:48,285 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) [2023-11-26 12:00:48,287 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) [2023-11-26 12:00:48,288 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) [2023-11-26 12:00:48,288 INFO L175 Difference]: Start difference. First operand has 105 places, 99 transitions, 242 flow. Second operand 8 states and 626 transitions. [2023-11-26 12:00:48,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 198 transitions, 792 flow [2023-11-26 12:00:48,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 198 transitions, 786 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:48,298 INFO L231 Difference]: Finished difference. Result has 114 places, 109 transitions, 351 flow [2023-11-26 12:00:48,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=351, PETRI_PLACES=114, PETRI_TRANSITIONS=109} [2023-11-26 12:00:48,299 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -14 predicate places. [2023-11-26 12:00:48,299 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 109 transitions, 351 flow [2023-11-26 12:00:48,300 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) [2023-11-26 12:00:48,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:48,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:48,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:48,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:48,505 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-26 12:00:48,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:48,506 INFO L85 PathProgramCache]: Analyzing trace with hash 204888598, now seen corresponding path program 1 times [2023-11-26 12:00:48,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:48,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318030170] [2023-11-26 12:00:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:48,507 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 [2023-11-26 12:00:48,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:48,508 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:48,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:48,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 12:00:48,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:48,731 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 [2023-11-26 12:00:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:48,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:48,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:48,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318030170] [2023-11-26 12:00:48,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318030170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:48,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:48,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:48,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886763226] [2023-11-26 12:00:48,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:48,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:48,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:48,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:48,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:49,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 138 [2023-11-26 12:00:49,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 109 transitions, 351 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) [2023-11-26 12:00:49,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:49,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 138 [2023-11-26 12:00:49,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:50,895 INFO L124 PetriNetUnfolderBase]: 1721/4195 cut-off events. [2023-11-26 12:00:50,895 INFO L125 PetriNetUnfolderBase]: For 2344/2344 co-relation queries the response was YES. [2023-11-26 12:00:50,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8763 conditions, 4195 events. 1721/4195 cut-off events. For 2344/2344 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 34568 event pairs, 390 based on Foata normal form. 450/3825 useless extension candidates. Maximal degree in co-relation 7591. Up to 1957 conditions per place. [2023-11-26 12:00:50,921 INFO L140 encePairwiseOnDemand]: 130/138 looper letters, 126 selfloop transitions, 12 changer transitions 2/181 dead transitions. [2023-11-26 12:00:50,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 181 transitions, 804 flow [2023-11-26 12:00:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:00:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:00:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 557 transitions. [2023-11-26 12:00:50,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5766045548654244 [2023-11-26 12:00:50,925 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 557 transitions. [2023-11-26 12:00:50,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 557 transitions. [2023-11-26 12:00:50,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:50,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 557 transitions. [2023-11-26 12:00:50,927 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) [2023-11-26 12:00:50,930 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) [2023-11-26 12:00:50,931 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) [2023-11-26 12:00:50,931 INFO L175 Difference]: Start difference. First operand has 114 places, 109 transitions, 351 flow. Second operand 7 states and 557 transitions. [2023-11-26 12:00:50,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 181 transitions, 804 flow [2023-11-26 12:00:50,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 181 transitions, 804 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:00:50,942 INFO L231 Difference]: Finished difference. Result has 123 places, 111 transitions, 409 flow [2023-11-26 12:00:50,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=409, PETRI_PLACES=123, PETRI_TRANSITIONS=111} [2023-11-26 12:00:50,943 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -5 predicate places. [2023-11-26 12:00:50,944 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 111 transitions, 409 flow [2023-11-26 12:00:50,944 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) [2023-11-26 12:00:50,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:50,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:50,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-26 12:00:51,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:51,150 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)] === [2023-11-26 12:00:51,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:51,150 INFO L85 PathProgramCache]: Analyzing trace with hash 206410361, now seen corresponding path program 1 times [2023-11-26 12:00:51,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:51,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195779826] [2023-11-26 12:00:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:51,151 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 [2023-11-26 12:00:51,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:51,152 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:51,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:51,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:00:51,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:51,341 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 [2023-11-26 12:00:51,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:51,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:51,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:51,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195779826] [2023-11-26 12:00:51,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195779826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:51,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:51,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:51,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641425052] [2023-11-26 12:00:51,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:51,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:51,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:51,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:51,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:51,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-26 12:00:51,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 111 transitions, 409 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) [2023-11-26 12:00:51,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:51,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-26 12:00:51,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:52,349 INFO L124 PetriNetUnfolderBase]: 1721/3577 cut-off events. [2023-11-26 12:00:52,350 INFO L125 PetriNetUnfolderBase]: For 3912/3912 co-relation queries the response was YES. [2023-11-26 12:00:52,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8759 conditions, 3577 events. 1721/3577 cut-off events. For 3912/3912 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 25230 event pairs, 958 based on Foata normal form. 146/3176 useless extension candidates. Maximal degree in co-relation 7583. Up to 1747 conditions per place. [2023-11-26 12:00:52,375 INFO L140 encePairwiseOnDemand]: 131/138 looper letters, 91 selfloop transitions, 6 changer transitions 0/132 dead transitions. [2023-11-26 12:00:52,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 132 transitions, 655 flow [2023-11-26 12:00:52,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:52,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-11-26 12:00:52,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2023-11-26 12:00:52,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-11-26 12:00:52,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-11-26 12:00:52,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:52,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-11-26 12:00:52,379 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) [2023-11-26 12:00:52,381 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) [2023-11-26 12:00:52,381 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) [2023-11-26 12:00:52,381 INFO L175 Difference]: Start difference. First operand has 123 places, 111 transitions, 409 flow. Second operand 3 states and 261 transitions. [2023-11-26 12:00:52,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 132 transitions, 655 flow [2023-11-26 12:00:52,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 132 transitions, 641 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:00:52,392 INFO L231 Difference]: Finished difference. Result has 122 places, 111 transitions, 421 flow [2023-11-26 12:00:52,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=421, PETRI_PLACES=122, PETRI_TRANSITIONS=111} [2023-11-26 12:00:52,394 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -6 predicate places. [2023-11-26 12:00:52,394 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 111 transitions, 421 flow [2023-11-26 12:00:52,394 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) [2023-11-26 12:00:52,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:52,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:52,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-26 12:00:52,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:52,599 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-26 12:00:52,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:52,600 INFO L85 PathProgramCache]: Analyzing trace with hash 206410360, now seen corresponding path program 1 times [2023-11-26 12:00:52,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:52,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309914322] [2023-11-26 12:00:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:52,600 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 [2023-11-26 12:00:52,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:52,602 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:52,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:52,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:52,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:52,802 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 [2023-11-26 12:00:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:52,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:52,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:52,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309914322] [2023-11-26 12:00:52,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309914322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:52,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:52,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:52,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907374772] [2023-11-26 12:00:52,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:52,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:52,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:52,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:52,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:52,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 138 [2023-11-26 12:00:52,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 111 transitions, 421 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) [2023-11-26 12:00:52,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:52,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 138 [2023-11-26 12:00:52,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:53,642 INFO L124 PetriNetUnfolderBase]: 1973/3826 cut-off events. [2023-11-26 12:00:53,643 INFO L125 PetriNetUnfolderBase]: For 4263/4263 co-relation queries the response was YES. [2023-11-26 12:00:53,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9778 conditions, 3826 events. 1973/3826 cut-off events. For 4263/4263 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 25180 event pairs, 1315 based on Foata normal form. 0/3292 useless extension candidates. Maximal degree in co-relation 8601. Up to 2473 conditions per place. [2023-11-26 12:00:53,661 INFO L140 encePairwiseOnDemand]: 129/138 looper letters, 80 selfloop transitions, 7 changer transitions 0/120 dead transitions. [2023-11-26 12:00:53,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 120 transitions, 619 flow [2023-11-26 12:00:53,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:53,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:53,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-11-26 12:00:53,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2023-11-26 12:00:53,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-11-26 12:00:53,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-11-26 12:00:53,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:53,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-11-26 12:00:53,664 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) [2023-11-26 12:00:53,665 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) [2023-11-26 12:00:53,665 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) [2023-11-26 12:00:53,666 INFO L175 Difference]: Start difference. First operand has 122 places, 111 transitions, 421 flow. Second operand 3 states and 246 transitions. [2023-11-26 12:00:53,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 120 transitions, 619 flow [2023-11-26 12:00:53,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 608 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:53,677 INFO L231 Difference]: Finished difference. Result has 117 places, 106 transitions, 414 flow [2023-11-26 12:00:53,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=414, PETRI_PLACES=117, PETRI_TRANSITIONS=106} [2023-11-26 12:00:53,678 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -11 predicate places. [2023-11-26 12:00:53,678 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 106 transitions, 414 flow [2023-11-26 12:00:53,679 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) [2023-11-26 12:00:53,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:53,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:53,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:53,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:53,879 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)] === [2023-11-26 12:00:53,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:53,880 INFO L85 PathProgramCache]: Analyzing trace with hash 657650424, now seen corresponding path program 1 times [2023-11-26 12:00:53,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:53,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015850792] [2023-11-26 12:00:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:53,880 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 [2023-11-26 12:00:53,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:53,881 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:53,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:54,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 12:00:54,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:54,107 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 [2023-11-26 12:00:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:54,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:54,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:54,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015850792] [2023-11-26 12:00:54,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015850792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:54,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:54,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:54,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500618185] [2023-11-26 12:00:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:54,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:54,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:54,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:54,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:55,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 138 [2023-11-26 12:00:55,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 106 transitions, 414 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) [2023-11-26 12:00:55,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:55,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 138 [2023-11-26 12:00:55,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:56,157 INFO L124 PetriNetUnfolderBase]: 1301/2914 cut-off events. [2023-11-26 12:00:56,157 INFO L125 PetriNetUnfolderBase]: For 2797/2797 co-relation queries the response was YES. [2023-11-26 12:00:56,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7018 conditions, 2914 events. 1301/2914 cut-off events. For 2797/2797 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 20289 event pairs, 93 based on Foata normal form. 0/2687 useless extension candidates. Maximal degree in co-relation 6135. Up to 1488 conditions per place. [2023-11-26 12:00:56,180 INFO L140 encePairwiseOnDemand]: 130/138 looper letters, 116 selfloop transitions, 16 changer transitions 1/169 dead transitions. [2023-11-26 12:00:56,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 169 transitions, 943 flow [2023-11-26 12:00:56,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:00:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:00:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2023-11-26 12:00:56,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2023-11-26 12:00:56,183 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2023-11-26 12:00:56,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2023-11-26 12:00:56,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:56,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2023-11-26 12:00:56,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:56,189 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) [2023-11-26 12:00:56,189 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) [2023-11-26 12:00:56,189 INFO L175 Difference]: Start difference. First operand has 117 places, 106 transitions, 414 flow. Second operand 7 states and 539 transitions. [2023-11-26 12:00:56,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 169 transitions, 943 flow [2023-11-26 12:00:56,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 169 transitions, 925 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:56,207 INFO L231 Difference]: Finished difference. Result has 123 places, 113 transitions, 506 flow [2023-11-26 12:00:56,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=506, PETRI_PLACES=123, PETRI_TRANSITIONS=113} [2023-11-26 12:00:56,209 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -5 predicate places. [2023-11-26 12:00:56,209 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 113 transitions, 506 flow [2023-11-26 12:00:56,209 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) [2023-11-26 12:00:56,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:56,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:56,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:56,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:56,415 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-26 12:00:56,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:56,416 INFO L85 PathProgramCache]: Analyzing trace with hash 657650423, now seen corresponding path program 1 times [2023-11-26 12:00:56,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:56,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958728519] [2023-11-26 12:00:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:56,417 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 [2023-11-26 12:00:56,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:56,418 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:56,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:00:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:56,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:00:56,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:56,647 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 [2023-11-26 12:00:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:56,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:56,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:56,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958728519] [2023-11-26 12:00:56,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958728519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:56,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:56,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:56,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048931298] [2023-11-26 12:00:56,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:56,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:56,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:56,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:56,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:57,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 138 [2023-11-26 12:00:57,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 113 transitions, 506 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) [2023-11-26 12:00:57,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:57,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 138 [2023-11-26 12:00:57,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:58,099 INFO L124 PetriNetUnfolderBase]: 1070/2367 cut-off events. [2023-11-26 12:00:58,099 INFO L125 PetriNetUnfolderBase]: For 2838/2838 co-relation queries the response was YES. [2023-11-26 12:00:58,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6110 conditions, 2367 events. 1070/2367 cut-off events. For 2838/2838 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15802 event pairs, 153 based on Foata normal form. 65/2371 useless extension candidates. Maximal degree in co-relation 5275. Up to 794 conditions per place. [2023-11-26 12:00:58,110 INFO L140 encePairwiseOnDemand]: 126/138 looper letters, 119 selfloop transitions, 21 changer transitions 0/174 dead transitions. [2023-11-26 12:00:58,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 174 transitions, 1028 flow [2023-11-26 12:00:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:00:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 12:00:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 593 transitions. [2023-11-26 12:00:58,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371376811594203 [2023-11-26 12:00:58,114 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 593 transitions. [2023-11-26 12:00:58,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 593 transitions. [2023-11-26 12:00:58,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:58,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 593 transitions. [2023-11-26 12:00:58,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.125) internal successors, (593), 8 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:58,120 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) [2023-11-26 12:00:58,120 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) [2023-11-26 12:00:58,121 INFO L175 Difference]: Start difference. First operand has 123 places, 113 transitions, 506 flow. Second operand 8 states and 593 transitions. [2023-11-26 12:00:58,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 174 transitions, 1028 flow [2023-11-26 12:00:58,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 174 transitions, 1025 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:58,135 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 637 flow [2023-11-26 12:00:58,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=134, PETRI_TRANSITIONS=119} [2023-11-26 12:00:58,136 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, 6 predicate places. [2023-11-26 12:00:58,136 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 637 flow [2023-11-26 12:00:58,136 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) [2023-11-26 12:00:58,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:58,137 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] [2023-11-26 12:00:58,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:58,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:00:58,342 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-26 12:00:58,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:58,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1505968442, now seen corresponding path program 1 times [2023-11-26 12:00:58,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:00:58,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460130478] [2023-11-26 12:00:58,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:58,343 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 [2023-11-26 12:00:58,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:00:58,344 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:00:58,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-26 12:00:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:58,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:00:58,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:58,671 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:58,672 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:58,673 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:58,675 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 [2023-11-26 12:00:58,731 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:58,732 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:00:58,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:58,741 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 78 treesize of output 83 [2023-11-26 12:00:58,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:00:58,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 151 treesize of output 61 [2023-11-26 12:00:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:58,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:58,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:00:58,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460130478] [2023-11-26 12:00:58,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460130478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:58,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:58,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:58,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972259242] [2023-11-26 12:00:58,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:58,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:58,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:00:58,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:58,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:59,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 138 [2023-11-26 12:00:59,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 119 transitions, 637 flow. Second operand has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:59,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:59,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 138 [2023-11-26 12:00:59,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:02,512 INFO L124 PetriNetUnfolderBase]: 1546/3053 cut-off events. [2023-11-26 12:01:02,512 INFO L125 PetriNetUnfolderBase]: For 6492/6492 co-relation queries the response was YES. [2023-11-26 12:01:02,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9313 conditions, 3053 events. 1546/3053 cut-off events. For 6492/6492 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20147 event pairs, 649 based on Foata normal form. 70/3109 useless extension candidates. Maximal degree in co-relation 8019. Up to 2127 conditions per place. [2023-11-26 12:01:02,531 INFO L140 encePairwiseOnDemand]: 128/138 looper letters, 113 selfloop transitions, 23 changer transitions 0/168 dead transitions. [2023-11-26 12:01:02,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 168 transitions, 1165 flow [2023-11-26 12:01:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:01:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 467 transitions. [2023-11-26 12:01:02,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5640096618357487 [2023-11-26 12:01:02,534 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 467 transitions. [2023-11-26 12:01:02,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 467 transitions. [2023-11-26 12:01:02,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:02,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 467 transitions. [2023-11-26 12:01:02,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:02,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:02,540 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:02,540 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 637 flow. Second operand 6 states and 467 transitions. [2023-11-26 12:01:02,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 168 transitions, 1165 flow [2023-11-26 12:01:02,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 168 transitions, 1152 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:01:02,563 INFO L231 Difference]: Finished difference. Result has 140 places, 142 transitions, 864 flow [2023-11-26 12:01:02,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=864, PETRI_PLACES=140, PETRI_TRANSITIONS=142} [2023-11-26 12:01:02,564 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, 12 predicate places. [2023-11-26 12:01:02,564 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 142 transitions, 864 flow [2023-11-26 12:01:02,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:02,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:02,564 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, 1] [2023-11-26 12:01:02,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f731ec-0b7d-4995-a55b-8f62732b92de/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0