./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB --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 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:39:15,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:39:15,635 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:39:15,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:39:15,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:39:15,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:39:15,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:39:15,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:39:15,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:39:15,672 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:39:15,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:39:15,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:39:15,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:39:15,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:39:15,673 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:39:15,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:39:15,673 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:39:15,673 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:39:15,673 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:39:15,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:39:15,674 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:39:15,674 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:39:15,674 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:39:15,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:39:15,674 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:39:15,674 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:39:15,674 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:39:15,674 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:39:15,674 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:39:15,675 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:39:15,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:39:15,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:39:15,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:39:15,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:39:15,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:39:15,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:39:15,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:39:15,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:39:15,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:39:15,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:39:15,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:39:15,676 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:39:15,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:39:15,676 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:39:15,676 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:39:15,676 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:39:15,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:39:15,677 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece [2024-11-28 02:39:15,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:39:15,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:39:15,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:39:15,957 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:39:15,957 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:39:15,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2024-11-28 02:39:18,964 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/data/ebe35d09c/7327e1e426e84d61bb3e590707ae4124/FLAGc38a933ef [2024-11-28 02:39:19,442 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:39:19,442 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2024-11-28 02:39:19,490 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/data/ebe35d09c/7327e1e426e84d61bb3e590707ae4124/FLAGc38a933ef [2024-11-28 02:39:19,506 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/data/ebe35d09c/7327e1e426e84d61bb3e590707ae4124 [2024-11-28 02:39:19,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:39:19,511 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:39:19,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:39:19,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:39:19,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:39:19,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:39:19" (1/1) ... [2024-11-28 02:39:19,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180d5e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:19, skipping insertion in model container [2024-11-28 02:39:19,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:39:19" (1/1) ... [2024-11-28 02:39:19,591 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:39:20,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:39:20,252 ERROR L321 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) [2024-11-28 02:39:20,252 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23eefcb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:20, skipping insertion in model container [2024-11-28 02:39:20,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:39:20,253 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 02:39:20,255 INFO L158 Benchmark]: Toolchain (without parser) took 743.64ms. Allocated memory is still 142.6MB. Free memory was 115.8MB in the beginning and 98.0MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:39:20,256 INFO L158 Benchmark]: CDTParser took 0.82ms. Allocated memory is still 142.6MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:39:20,256 INFO L158 Benchmark]: CACSL2BoogieTranslator took 740.64ms. Allocated memory is still 142.6MB. Free memory was 115.8MB in the beginning and 98.0MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:39:20,257 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82ms. Allocated memory is still 142.6MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 740.64ms. Allocated memory is still 142.6MB. Free memory was 115.8MB in the beginning and 98.0MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3902]: 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB --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 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:39:22,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:39:23,069 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 02:39:23,077 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:39:23,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:39:23,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:39:23,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:39:23,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:39:23,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:39:23,103 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:39:23,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:39:23,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:39:23,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:39:23,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:39:23,104 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:39:23,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:39:23,104 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:39:23,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:39:23,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:39:23,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:39:23,105 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:39:23,105 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:39:23,105 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:39:23,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:39:23,105 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:39:23,105 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 02:39:23,105 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 02:39:23,105 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:39:23,105 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:39:23,106 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:39:23,106 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:39:23,106 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:39:23,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:39:23,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:39:23,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:39:23,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:39:23,106 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:39:23,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:39:23,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:39:23,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:39:23,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:39:23,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:39:23,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:39:23,107 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 02:39:23,107 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 02:39:23,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:39:23,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:39:23,108 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:39:23,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:39:23,108 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece [2024-11-28 02:39:23,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:39:23,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:39:23,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:39:23,434 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:39:23,435 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:39:23,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2024-11-28 02:39:26,441 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/data/522219d72/6bd8a6cd5d5d4a7196be88cfbad24ae2/FLAG1998e10c4 [2024-11-28 02:39:26,896 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:39:26,897 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2024-11-28 02:39:26,948 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/data/522219d72/6bd8a6cd5d5d4a7196be88cfbad24ae2/FLAG1998e10c4 [2024-11-28 02:39:27,040 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/data/522219d72/6bd8a6cd5d5d4a7196be88cfbad24ae2 [2024-11-28 02:39:27,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:39:27,048 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:39:27,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:39:27,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:39:27,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:39:27,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:27,057 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4119c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27, skipping insertion in model container [2024-11-28 02:39:27,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:27,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:39:27,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:39:27,648 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 02:39:27,676 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:39:27,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:39:27,755 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:39:27,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:39:27,936 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:39:27,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27 WrapperNode [2024-11-28 02:39:27,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:39:27,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:39:27,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:39:27,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:39:27,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:27,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:27,988 INFO L138 Inliner]: procedures = 249, calls = 40, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 143 [2024-11-28 02:39:27,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:39:27,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:39:27,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:39:27,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:39:27,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:27,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:28,005 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:28,024 INFO L175 MemorySlicer]: Split 17 memory accesses to 3 slices as follows [2, 13, 2]. 76 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 6, 2]. [2024-11-28 02:39:28,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:28,025 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:28,043 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:28,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:28,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:28,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:28,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:28,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:39:28,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:39:28,064 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:39:28,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:39:28,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (1/1) ... [2024-11-28 02:39:28,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:39:28,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:28,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:39:28,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:39:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 02:39:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 02:39:28,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-28 02:39:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2024-11-28 02:39:28,148 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2024-11-28 02:39:28,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:39:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:39:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 02:39:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 02:39:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-28 02:39:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 02:39:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 02:39:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 02:39:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:39:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:39:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:39:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:39:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:39:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:39:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:39:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:39:28,154 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:39:28,517 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:39:28,519 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:39:29,260 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:39:29,261 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:39:29,437 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:39:29,438 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:39:29,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:39:29 BoogieIcfgContainer [2024-11-28 02:39:29,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:39:29,442 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:39:29,443 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:39:29,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:39:29,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:39:27" (1/3) ... [2024-11-28 02:39:29,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9420f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:39:29, skipping insertion in model container [2024-11-28 02:39:29,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:27" (2/3) ... [2024-11-28 02:39:29,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9420f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:39:29, skipping insertion in model container [2024-11-28 02:39:29,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:39:29" (3/3) ... [2024-11-28 02:39:29,454 INFO L128 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2024-11-28 02:39:29,473 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:39:29,475 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-3_1-container_of-global.i that has 2 procedures, 103 locations, 1 initial locations, 0 loop locations, and 37 error locations. [2024-11-28 02:39:29,475 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:39:29,573 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:39:29,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 132 transitions, 278 flow [2024-11-28 02:39:29,720 INFO L124 PetriNetUnfolderBase]: 18/165 cut-off events. [2024-11-28 02:39:29,723 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:39:29,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 165 events. 18/165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 528 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2024-11-28 02:39:29,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 132 transitions, 278 flow [2024-11-28 02:39:29,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 272 flow [2024-11-28 02:39:29,750 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:39:29,767 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@2c2e2a06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:39:29,768 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-11-28 02:39:29,773 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:39:29,773 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-28 02:39:29,773 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:39:29,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:29,774 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:39:29,774 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:29,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:29,780 INFO L85 PathProgramCache]: Analyzing trace with hash 495006, now seen corresponding path program 1 times [2024-11-28 02:39:29,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:29,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279044637] [2024-11-28 02:39:29,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:29,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:29,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:29,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:29,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:39:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:29,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:39:29,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:30,058 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 [2024-11-28 02:39:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:30,088 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:30,089 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:30,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279044637] [2024-11-28 02:39:30,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279044637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:30,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:30,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:39:30,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937972536] [2024-11-28 02:39:30,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:30,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:39:30,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:30,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:39:30,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:39:30,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-28 02:39:30,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2024-11-28 02:39:30,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:30,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-28 02:39:30,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:31,148 INFO L124 PetriNetUnfolderBase]: 707/2019 cut-off events. [2024-11-28 02:39:31,148 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-28 02:39:31,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3235 conditions, 2019 events. 707/2019 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15812 event pairs, 95 based on Foata normal form. 156/1873 useless extension candidates. Maximal degree in co-relation 3062. Up to 1002 conditions per place. [2024-11-28 02:39:31,171 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 54 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2024-11-28 02:39:31,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 118 transitions, 360 flow [2024-11-28 02:39:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:39:31,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:39:31,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2024-11-28 02:39:31,190 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 02:39:31,192 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 272 flow. Second operand 3 states and 264 transitions. [2024-11-28 02:39:31,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 118 transitions, 360 flow [2024-11-28 02:39:31,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 352 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:39:31,207 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 224 flow [2024-11-28 02:39:31,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=110, PETRI_TRANSITIONS=108} [2024-11-28 02:39:31,217 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -12 predicate places. [2024-11-28 02:39:31,217 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 224 flow [2024-11-28 02:39:31,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2024-11-28 02:39:31,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:31,218 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:39:31,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:39:31,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:31,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:31,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:31,423 INFO L85 PathProgramCache]: Analyzing trace with hash 495007, now seen corresponding path program 1 times [2024-11-28 02:39:31,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:31,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302094692] [2024-11-28 02:39:31,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:31,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:31,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:31,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:31,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:39:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:31,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:39:31,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:31,628 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 [2024-11-28 02:39:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:31,644 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:31,644 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:31,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302094692] [2024-11-28 02:39:31,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302094692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:31,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:31,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:39:31,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199560439] [2024-11-28 02:39:31,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:31,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:39:31,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:31,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:39:31,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:39:31,913 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 132 [2024-11-28 02:39:31,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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) [2024-11-28 02:39:31,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:31,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 132 [2024-11-28 02:39:31,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:32,511 INFO L124 PetriNetUnfolderBase]: 707/2015 cut-off events. [2024-11-28 02:39:32,511 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-28 02:39:32,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 2015 events. 707/2015 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15782 event pairs, 95 based on Foata normal form. 2/1715 useless extension candidates. Maximal degree in co-relation 479. Up to 1002 conditions per place. [2024-11-28 02:39:32,530 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 52 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-11-28 02:39:32,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 344 flow [2024-11-28 02:39:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:39:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:39:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2024-11-28 02:39:32,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-28 02:39:32,536 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 224 flow. Second operand 3 states and 256 transitions. [2024-11-28 02:39:32,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 344 flow [2024-11-28 02:39:32,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 114 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:39:32,541 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 216 flow [2024-11-28 02:39:32,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=106, PETRI_TRANSITIONS=104} [2024-11-28 02:39:32,542 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2024-11-28 02:39:32,543 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 216 flow [2024-11-28 02:39:32,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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) [2024-11-28 02:39:32,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:32,544 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 02:39:32,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:39:32,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:32,744 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:32,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:32,745 INFO L85 PathProgramCache]: Analyzing trace with hash 15345152, now seen corresponding path program 1 times [2024-11-28 02:39:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826337357] [2024-11-28 02:39:32,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:32,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:32,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:32,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:32,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:39:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:32,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:39:32,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:32,890 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:32,890 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:32,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826337357] [2024-11-28 02:39:32,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826337357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:32,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:32,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:39:32,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337236349] [2024-11-28 02:39:32,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:32,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:39:32,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:32,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:39:32,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:39:33,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2024-11-28 02:39:33,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2024-11-28 02:39:33,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:33,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2024-11-28 02:39:33,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:33,619 INFO L124 PetriNetUnfolderBase]: 767/1825 cut-off events. [2024-11-28 02:39:33,620 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-28 02:39:33,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 1825 events. 767/1825 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 12630 event pairs, 705 based on Foata normal form. 0/1526 useless extension candidates. Maximal degree in co-relation 951. Up to 1189 conditions per place. [2024-11-28 02:39:33,630 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 52 selfloop transitions, 3 changer transitions 2/115 dead transitions. [2024-11-28 02:39:33,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 115 transitions, 350 flow [2024-11-28 02:39:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:39:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:39:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2024-11-28 02:39:33,633 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 02:39:33,633 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 216 flow. Second operand 3 states and 264 transitions. [2024-11-28 02:39:33,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 115 transitions, 350 flow [2024-11-28 02:39:33,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 115 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:39:33,636 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 221 flow [2024-11-28 02:39:33,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2024-11-28 02:39:33,637 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -15 predicate places. [2024-11-28 02:39:33,637 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 221 flow [2024-11-28 02:39:33,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2024-11-28 02:39:33,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:33,638 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:33,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:39:33,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:33,839 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:33,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1320838570, now seen corresponding path program 1 times [2024-11-28 02:39:33,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:33,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672530420] [2024-11-28 02:39:33,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:33,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:33,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:33,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:33,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:39:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:33,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:39:33,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:34,004 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:39:34,005 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:39:34,006 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:39:34,013 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 [2024-11-28 02:39:34,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:39:34,121 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 93 treesize of output 53 [2024-11-28 02:39:34,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:39:34,208 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 [2024-11-28 02:39:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:34,231 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:34,231 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:34,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672530420] [2024-11-28 02:39:34,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672530420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:34,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:34,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:39:34,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959378672] [2024-11-28 02:39:34,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:34,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:39:34,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:34,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:39:34,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:39:34,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 132 [2024-11-28 02:39:34,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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) [2024-11-28 02:39:34,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:34,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 132 [2024-11-28 02:39:34,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:35,368 INFO L124 PetriNetUnfolderBase]: 1153/2696 cut-off events. [2024-11-28 02:39:35,369 INFO L125 PetriNetUnfolderBase]: For 152/153 co-relation queries the response was YES. [2024-11-28 02:39:35,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 2696 events. 1153/2696 cut-off events. For 152/153 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 19803 event pairs, 684 based on Foata normal form. 1/2345 useless extension candidates. Maximal degree in co-relation 4359. Up to 1845 conditions per place. [2024-11-28 02:39:35,388 INFO L140 encePairwiseOnDemand]: 125/132 looper letters, 52 selfloop transitions, 6 changer transitions 0/110 dead transitions. [2024-11-28 02:39:35,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 110 transitions, 352 flow [2024-11-28 02:39:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:39:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:39:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-11-28 02:39:35,391 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-28 02:39:35,391 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 221 flow. Second operand 4 states and 319 transitions. [2024-11-28 02:39:35,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 110 transitions, 352 flow [2024-11-28 02:39:35,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 110 transitions, 341 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-28 02:39:35,401 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 234 flow [2024-11-28 02:39:35,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2024-11-28 02:39:35,404 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -17 predicate places. [2024-11-28 02:39:35,404 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 234 flow [2024-11-28 02:39:35,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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) [2024-11-28 02:39:35,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:35,405 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:35,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:39:35,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:35,606 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:35,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:35,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1433935613, now seen corresponding path program 1 times [2024-11-28 02:39:35,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:35,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173171062] [2024-11-28 02:39:35,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:35,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:35,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:35,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:35,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:39:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:35,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:39:35,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:35,785 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:39:35,786 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:39:35,787 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:39:35,790 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 [2024-11-28 02:39:36,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:39:36,056 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 [2024-11-28 02:39:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:36,077 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:36,077 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:36,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173171062] [2024-11-28 02:39:36,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173171062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:36,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:36,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:39:36,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201116616] [2024-11-28 02:39:36,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:36,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:39:36,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:36,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:39:36,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:39:36,632 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2024-11-28 02:39:36,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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) [2024-11-28 02:39:36,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:36,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2024-11-28 02:39:36,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:37,503 INFO L124 PetriNetUnfolderBase]: 1321/2989 cut-off events. [2024-11-28 02:39:37,503 INFO L125 PetriNetUnfolderBase]: For 241/247 co-relation queries the response was YES. [2024-11-28 02:39:37,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5474 conditions, 2989 events. 1321/2989 cut-off events. For 241/247 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 21664 event pairs, 796 based on Foata normal form. 6/2523 useless extension candidates. Maximal degree in co-relation 2300. Up to 2115 conditions per place. [2024-11-28 02:39:37,523 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 54 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2024-11-28 02:39:37,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 369 flow [2024-11-28 02:39:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:39:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:39:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 359 transitions. [2024-11-28 02:39:37,526 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543939393939394 [2024-11-28 02:39:37,526 INFO L175 Difference]: Start difference. First operand has 105 places, 103 transitions, 234 flow. Second operand 5 states and 359 transitions. [2024-11-28 02:39:37,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 369 flow [2024-11-28 02:39:37,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 107 transitions, 363 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:39:37,529 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 240 flow [2024-11-28 02:39:37,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2024-11-28 02:39:37,530 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -18 predicate places. [2024-11-28 02:39:37,530 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 240 flow [2024-11-28 02:39:37,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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) [2024-11-28 02:39:37,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:37,531 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:37,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:39:37,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:37,732 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:37,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1081930850, now seen corresponding path program 1 times [2024-11-28 02:39:37,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:37,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621848059] [2024-11-28 02:39:37,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:37,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:37,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:37,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:37,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:39:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:37,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:39:37,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:37,914 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 [2024-11-28 02:39:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:37,968 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:37,968 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:37,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621848059] [2024-11-28 02:39:37,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621848059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:37,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:37,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:39:37,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016924124] [2024-11-28 02:39:37,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:37,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:39:37,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:37,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:39:37,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:39:38,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 132 [2024-11-28 02:39:38,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 240 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) [2024-11-28 02:39:38,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:38,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 132 [2024-11-28 02:39:38,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:38,669 INFO L124 PetriNetUnfolderBase]: 956/2215 cut-off events. [2024-11-28 02:39:38,669 INFO L125 PetriNetUnfolderBase]: For 67/70 co-relation queries the response was YES. [2024-11-28 02:39:38,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3941 conditions, 2215 events. 956/2215 cut-off events. For 67/70 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 15393 event pairs, 738 based on Foata normal form. 0/2023 useless extension candidates. Maximal degree in co-relation 1648. Up to 1362 conditions per place. [2024-11-28 02:39:38,686 INFO L140 encePairwiseOnDemand]: 123/132 looper letters, 52 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-28 02:39:38,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 105 transitions, 362 flow [2024-11-28 02:39:38,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:39:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:39:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2024-11-28 02:39:38,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-11-28 02:39:38,688 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 240 flow. Second operand 3 states and 246 transitions. [2024-11-28 02:39:38,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 105 transitions, 362 flow [2024-11-28 02:39:38,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 346 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:39:38,691 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 222 flow [2024-11-28 02:39:38,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2024-11-28 02:39:38,695 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -25 predicate places. [2024-11-28 02:39:38,695 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 222 flow [2024-11-28 02:39:38,695 INFO L472 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) [2024-11-28 02:39:38,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:38,695 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:38,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:39:38,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:38,896 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:38,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1081930849, now seen corresponding path program 1 times [2024-11-28 02:39:38,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:38,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227622675] [2024-11-28 02:39:38,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:38,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:38,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:38,899 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:38,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:39:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:39,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:39:39,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:39,067 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 [2024-11-28 02:39:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:39,185 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:39,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:39,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227622675] [2024-11-28 02:39:39,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227622675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:39,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:39,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:39:39,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633919112] [2024-11-28 02:39:39,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:39,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:39:39,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:39,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:39:39,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:39:39,402 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-28 02:39:39,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2024-11-28 02:39:39,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:39,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-28 02:39:39,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:39,818 INFO L124 PetriNetUnfolderBase]: 816/1932 cut-off events. [2024-11-28 02:39:39,819 INFO L125 PetriNetUnfolderBase]: For 86/89 co-relation queries the response was YES. [2024-11-28 02:39:39,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3463 conditions, 1932 events. 816/1932 cut-off events. For 86/89 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13124 event pairs, 531 based on Foata normal form. 88/1839 useless extension candidates. Maximal degree in co-relation 2812. Up to 992 conditions per place. [2024-11-28 02:39:39,831 INFO L140 encePairwiseOnDemand]: 125/132 looper letters, 63 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-11-28 02:39:39,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 112 transitions, 390 flow [2024-11-28 02:39:39,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:39:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:39:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2024-11-28 02:39:39,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-28 02:39:39,834 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 222 flow. Second operand 3 states and 261 transitions. [2024-11-28 02:39:39,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 112 transitions, 390 flow [2024-11-28 02:39:39,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 112 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:39:39,839 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 235 flow [2024-11-28 02:39:39,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-11-28 02:39:39,840 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2024-11-28 02:39:39,841 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 235 flow [2024-11-28 02:39:39,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2024-11-28 02:39:39,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:39,841 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:39,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:39:40,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:40,042 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:40,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:40,043 INFO L85 PathProgramCache]: Analyzing trace with hash 899898881, now seen corresponding path program 1 times [2024-11-28 02:39:40,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:40,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429137006] [2024-11-28 02:39:40,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:40,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:40,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:40,048 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:40,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:39:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:40,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:39:40,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:40,201 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 [2024-11-28 02:39:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:40,278 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:40,278 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:40,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429137006] [2024-11-28 02:39:40,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429137006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:40,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:40,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:39:40,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998674551] [2024-11-28 02:39:40,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:40,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:39:40,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:40,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:39:40,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:39:40,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2024-11-28 02:39:40,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 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) [2024-11-28 02:39:40,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:40,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2024-11-28 02:39:40,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:41,594 INFO L124 PetriNetUnfolderBase]: 1177/2702 cut-off events. [2024-11-28 02:39:41,595 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-11-28 02:39:41,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5061 conditions, 2702 events. 1177/2702 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 19247 event pairs, 139 based on Foata normal form. 62/2644 useless extension candidates. Maximal degree in co-relation 3215. Up to 1078 conditions per place. [2024-11-28 02:39:41,609 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 102 selfloop transitions, 15 changer transitions 1/162 dead transitions. [2024-11-28 02:39:41,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 162 transitions, 626 flow [2024-11-28 02:39:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:39:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:39:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 594 transitions. [2024-11-28 02:39:41,612 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-28 02:39:41,612 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 235 flow. Second operand 8 states and 594 transitions. [2024-11-28 02:39:41,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 162 transitions, 626 flow [2024-11-28 02:39:41,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 162 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:39:41,622 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 339 flow [2024-11-28 02:39:41,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2024-11-28 02:39:41,625 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -14 predicate places. [2024-11-28 02:39:41,627 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 339 flow [2024-11-28 02:39:41,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 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) [2024-11-28 02:39:41,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:41,627 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:41,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:39:41,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:41,828 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:41,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:41,829 INFO L85 PathProgramCache]: Analyzing trace with hash 899898882, now seen corresponding path program 1 times [2024-11-28 02:39:41,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:41,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188400635] [2024-11-28 02:39:41,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:41,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:41,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:41,832 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:41,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:39:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:41,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:39:41,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:42,003 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 [2024-11-28 02:39:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:42,148 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:42,148 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:42,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188400635] [2024-11-28 02:39:42,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188400635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:42,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:42,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:39:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632708793] [2024-11-28 02:39:42,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:42,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:39:42,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:42,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:39:42,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:39:42,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 132 [2024-11-28 02:39:42,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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) [2024-11-28 02:39:42,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:42,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 132 [2024-11-28 02:39:42,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:43,308 INFO L124 PetriNetUnfolderBase]: 910/2220 cut-off events. [2024-11-28 02:39:43,309 INFO L125 PetriNetUnfolderBase]: For 974/1060 co-relation queries the response was YES. [2024-11-28 02:39:43,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4478 conditions, 2220 events. 910/2220 cut-off events. For 974/1060 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 15803 event pairs, 154 based on Foata normal form. 257/2403 useless extension candidates. Maximal degree in co-relation 4082. Up to 1074 conditions per place. [2024-11-28 02:39:43,323 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 89 selfloop transitions, 12 changer transitions 2/154 dead transitions. [2024-11-28 02:39:43,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 154 transitions, 653 flow [2024-11-28 02:39:43,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:39:43,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:39:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 545 transitions. [2024-11-28 02:39:43,326 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5898268398268398 [2024-11-28 02:39:43,326 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 339 flow. Second operand 7 states and 545 transitions. [2024-11-28 02:39:43,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 154 transitions, 653 flow [2024-11-28 02:39:43,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 154 transitions, 653 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:39:43,333 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 399 flow [2024-11-28 02:39:43,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=399, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2024-11-28 02:39:43,334 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -5 predicate places. [2024-11-28 02:39:43,334 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 399 flow [2024-11-28 02:39:43,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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) [2024-11-28 02:39:43,335 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:43,335 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:43,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:39:43,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:43,536 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:43,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:43,536 INFO L85 PathProgramCache]: Analyzing trace with hash -60742247, now seen corresponding path program 1 times [2024-11-28 02:39:43,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:43,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475931654] [2024-11-28 02:39:43,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:43,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:43,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:43,539 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:43,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:39:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:43,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:39:43,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:43,705 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 [2024-11-28 02:39:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:43,846 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:43,846 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:43,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475931654] [2024-11-28 02:39:43,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475931654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:43,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:43,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:39:43,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426755822] [2024-11-28 02:39:43,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:43,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:39:43,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:43,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:39:43,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:39:44,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 132 [2024-11-28 02:39:44,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 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) [2024-11-28 02:39:44,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:44,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 132 [2024-11-28 02:39:44,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:45,261 INFO L124 PetriNetUnfolderBase]: 894/2269 cut-off events. [2024-11-28 02:39:45,261 INFO L125 PetriNetUnfolderBase]: For 1895/1984 co-relation queries the response was YES. [2024-11-28 02:39:45,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4882 conditions, 2269 events. 894/2269 cut-off events. For 1895/1984 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 16528 event pairs, 125 based on Foata normal form. 173/2384 useless extension candidates. Maximal degree in co-relation 4480. Up to 1036 conditions per place. [2024-11-28 02:39:45,273 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 92 selfloop transitions, 16 changer transitions 1/160 dead transitions. [2024-11-28 02:39:45,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 160 transitions, 800 flow [2024-11-28 02:39:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:39:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:39:45,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 542 transitions. [2024-11-28 02:39:45,275 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5865800865800865 [2024-11-28 02:39:45,276 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 399 flow. Second operand 7 states and 542 transitions. [2024-11-28 02:39:45,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 160 transitions, 800 flow [2024-11-28 02:39:45,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 160 transitions, 779 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:39:45,283 INFO L231 Difference]: Finished difference. Result has 121 places, 115 transitions, 489 flow [2024-11-28 02:39:45,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=121, PETRI_TRANSITIONS=115} [2024-11-28 02:39:45,284 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -1 predicate places. [2024-11-28 02:39:45,284 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 115 transitions, 489 flow [2024-11-28 02:39:45,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 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) [2024-11-28 02:39:45,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:45,284 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:45,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:39:45,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:45,486 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:45,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:45,487 INFO L85 PathProgramCache]: Analyzing trace with hash -60742248, now seen corresponding path program 1 times [2024-11-28 02:39:45,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:45,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031175702] [2024-11-28 02:39:45,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:45,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:45,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:45,489 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:45,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:39:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:45,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:39:45,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:45,640 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 [2024-11-28 02:39:45,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:45,703 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:45,703 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:45,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031175702] [2024-11-28 02:39:45,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031175702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:45,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:45,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:39:45,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561616298] [2024-11-28 02:39:45,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:45,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:39:45,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:45,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:39:45,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:39:46,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2024-11-28 02:39:46,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 115 transitions, 489 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) [2024-11-28 02:39:46,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:46,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2024-11-28 02:39:46,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:47,018 INFO L124 PetriNetUnfolderBase]: 1336/2918 cut-off events. [2024-11-28 02:39:47,018 INFO L125 PetriNetUnfolderBase]: For 3158/3313 co-relation queries the response was YES. [2024-11-28 02:39:47,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 2918 events. 1336/2918 cut-off events. For 3158/3313 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20394 event pairs, 350 based on Foata normal form. 100/2951 useless extension candidates. Maximal degree in co-relation 6071. Up to 1093 conditions per place. [2024-11-28 02:39:47,034 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 108 selfloop transitions, 21 changer transitions 0/175 dead transitions. [2024-11-28 02:39:47,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 175 transitions, 922 flow [2024-11-28 02:39:47,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:39:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:39:47,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 593 transitions. [2024-11-28 02:39:47,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5615530303030303 [2024-11-28 02:39:47,038 INFO L175 Difference]: Start difference. First operand has 121 places, 115 transitions, 489 flow. Second operand 8 states and 593 transitions. [2024-11-28 02:39:47,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 175 transitions, 922 flow [2024-11-28 02:39:47,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 175 transitions, 919 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:39:47,052 INFO L231 Difference]: Finished difference. Result has 132 places, 121 transitions, 614 flow [2024-11-28 02:39:47,053 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=614, PETRI_PLACES=132, PETRI_TRANSITIONS=121} [2024-11-28 02:39:47,053 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 10 predicate places. [2024-11-28 02:39:47,053 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 121 transitions, 614 flow [2024-11-28 02:39:47,054 INFO L472 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) [2024-11-28 02:39:47,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:47,054 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:47,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:39:47,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:47,254 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:47,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:47,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1770422097, now seen corresponding path program 1 times [2024-11-28 02:39:47,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:47,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544603275] [2024-11-28 02:39:47,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:47,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:47,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:47,259 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:47,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:39:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:47,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:39:47,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:47,471 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:39:47,472 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:39:47,472 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:39:47,474 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 [2024-11-28 02:39:47,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:39:47,534 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 88 treesize of output 63 [2024-11-28 02:39:47,621 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:39:47,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 131 treesize of output 53 [2024-11-28 02:39:47,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:47,643 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:47,643 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:47,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544603275] [2024-11-28 02:39:47,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544603275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:47,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:47,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:39:47,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451040379] [2024-11-28 02:39:47,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:47,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:39:47,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:47,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:39:47,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:39:48,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 132 [2024-11-28 02:39:48,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 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) [2024-11-28 02:39:48,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:48,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 132 [2024-11-28 02:39:48,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:50,724 INFO L124 PetriNetUnfolderBase]: 2137/4102 cut-off events. [2024-11-28 02:39:50,724 INFO L125 PetriNetUnfolderBase]: For 7155/7483 co-relation queries the response was YES. [2024-11-28 02:39:50,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11226 conditions, 4102 events. 2137/4102 cut-off events. For 7155/7483 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 27872 event pairs, 627 based on Foata normal form. 35/3961 useless extension candidates. Maximal degree in co-relation 10360. Up to 1772 conditions per place. [2024-11-28 02:39:50,742 INFO L140 encePairwiseOnDemand]: 107/132 looper letters, 116 selfloop transitions, 48 changer transitions 0/204 dead transitions. [2024-11-28 02:39:50,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 204 transitions, 1293 flow [2024-11-28 02:39:50,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:39:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:39:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 601 transitions. [2024-11-28 02:39:50,744 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5691287878787878 [2024-11-28 02:39:50,744 INFO L175 Difference]: Start difference. First operand has 132 places, 121 transitions, 614 flow. Second operand 8 states and 601 transitions. [2024-11-28 02:39:50,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 204 transitions, 1293 flow [2024-11-28 02:39:50,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 204 transitions, 1280 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:39:50,761 INFO L231 Difference]: Finished difference. Result has 140 places, 154 transitions, 949 flow [2024-11-28 02:39:50,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=949, PETRI_PLACES=140, PETRI_TRANSITIONS=154} [2024-11-28 02:39:50,764 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 18 predicate places. [2024-11-28 02:39:50,764 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 154 transitions, 949 flow [2024-11-28 02:39:50,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 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) [2024-11-28 02:39:50,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:50,765 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:50,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:39:50,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:50,968 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:50,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:50,969 INFO L85 PathProgramCache]: Analyzing trace with hash 925744658, now seen corresponding path program 1 times [2024-11-28 02:39:50,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:50,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994317787] [2024-11-28 02:39:50,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:50,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:50,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:50,972 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:50,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:39:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:51,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:39:51,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:51,137 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 [2024-11-28 02:39:51,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:39:51,445 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 [2024-11-28 02:39:51,464 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:39:51,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 02:39:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:51,492 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:51,492 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994317787] [2024-11-28 02:39:51,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994317787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:51,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:51,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:39:51,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957761920] [2024-11-28 02:39:51,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:51,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:39:51,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:51,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:39:51,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:39:52,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 132 [2024-11-28 02:39:52,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 154 transitions, 949 flow. Second operand has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 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) [2024-11-28 02:39:52,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:52,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 132 [2024-11-28 02:39:52,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:53,736 INFO L124 PetriNetUnfolderBase]: 2217/4570 cut-off events. [2024-11-28 02:39:53,737 INFO L125 PetriNetUnfolderBase]: For 9259/9524 co-relation queries the response was YES. [2024-11-28 02:39:53,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14049 conditions, 4570 events. 2217/4570 cut-off events. For 9259/9524 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 34020 event pairs, 388 based on Foata normal form. 71/4569 useless extension candidates. Maximal degree in co-relation 12651. Up to 1922 conditions per place. [2024-11-28 02:39:53,760 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 156 selfloop transitions, 24 changer transitions 0/232 dead transitions. [2024-11-28 02:39:53,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 232 transitions, 1612 flow [2024-11-28 02:39:53,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:39:53,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:39:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 602 transitions. [2024-11-28 02:39:53,763 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5067340067340067 [2024-11-28 02:39:53,763 INFO L175 Difference]: Start difference. First operand has 140 places, 154 transitions, 949 flow. Second operand 9 states and 602 transitions. [2024-11-28 02:39:53,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 232 transitions, 1612 flow [2024-11-28 02:39:53,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 232 transitions, 1583 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-28 02:39:53,801 INFO L231 Difference]: Finished difference. Result has 144 places, 152 transitions, 968 flow [2024-11-28 02:39:53,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=144, PETRI_TRANSITIONS=152} [2024-11-28 02:39:53,802 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 22 predicate places. [2024-11-28 02:39:53,802 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 152 transitions, 968 flow [2024-11-28 02:39:53,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 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) [2024-11-28 02:39:53,803 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:53,803 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:53,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 02:39:54,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:54,004 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:54,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:54,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1413477800, now seen corresponding path program 1 times [2024-11-28 02:39:54,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:54,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186290589] [2024-11-28 02:39:54,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:54,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:54,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:54,007 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:54,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:39:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:54,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:39:54,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:54,178 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 [2024-11-28 02:39:54,184 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 [2024-11-28 02:39:54,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:39:54,402 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 [2024-11-28 02:39:54,413 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:39:54,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 02:39:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:54,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:54,439 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:54,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186290589] [2024-11-28 02:39:54,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186290589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:54,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:54,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:39:54,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008880358] [2024-11-28 02:39:54,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:54,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:39:54,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:54,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:39:54,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:39:55,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 132 [2024-11-28 02:39:55,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 152 transitions, 968 flow. Second operand has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 6 states have internal predecessors, (340), 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) [2024-11-28 02:39:55,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:55,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 132 [2024-11-28 02:39:55,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:56,584 INFO L124 PetriNetUnfolderBase]: 2531/5166 cut-off events. [2024-11-28 02:39:56,584 INFO L125 PetriNetUnfolderBase]: For 11508/11866 co-relation queries the response was YES. [2024-11-28 02:39:56,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15902 conditions, 5166 events. 2531/5166 cut-off events. For 11508/11866 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 39588 event pairs, 711 based on Foata normal form. 90/5189 useless extension candidates. Maximal degree in co-relation 13239. Up to 1928 conditions per place. [2024-11-28 02:39:56,604 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 154 selfloop transitions, 24 changer transitions 0/230 dead transitions. [2024-11-28 02:39:56,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 230 transitions, 1636 flow [2024-11-28 02:39:56,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:39:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:39:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 618 transitions. [2024-11-28 02:39:56,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5202020202020202 [2024-11-28 02:39:56,606 INFO L175 Difference]: Start difference. First operand has 144 places, 152 transitions, 968 flow. Second operand 9 states and 618 transitions. [2024-11-28 02:39:56,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 230 transitions, 1636 flow [2024-11-28 02:39:56,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 230 transitions, 1580 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 02:39:56,639 INFO L231 Difference]: Finished difference. Result has 142 places, 150 transitions, 966 flow [2024-11-28 02:39:56,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=966, PETRI_PLACES=142, PETRI_TRANSITIONS=150} [2024-11-28 02:39:56,639 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 20 predicate places. [2024-11-28 02:39:56,639 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 150 transitions, 966 flow [2024-11-28 02:39:56,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 6 states have internal predecessors, (340), 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) [2024-11-28 02:39:56,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:39:56,640 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:56,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 02:39:56,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:56,840 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:39:56,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:56,841 INFO L85 PathProgramCache]: Analyzing trace with hash 386742127, now seen corresponding path program 1 times [2024-11-28 02:39:56,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:39:56,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200029314] [2024-11-28 02:39:56,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:56,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:56,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:56,843 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:56,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:39:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:56,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:39:57,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:57,021 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:39:57,022 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:39:57,022 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:39:57,024 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 [2024-11-28 02:39:57,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:39:57,127 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 121 treesize of output 49 [2024-11-28 02:39:57,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:39:57,148 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:57,148 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:39:57,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200029314] [2024-11-28 02:39:57,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200029314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:57,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:57,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:39:57,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745408994] [2024-11-28 02:39:57,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:57,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:39:57,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:39:57,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:39:57,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:39:57,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2024-11-28 02:39:57,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 150 transitions, 966 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 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) [2024-11-28 02:39:57,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:39:57,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2024-11-28 02:39:57,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:39:59,892 INFO L124 PetriNetUnfolderBase]: 2959/5700 cut-off events. [2024-11-28 02:39:59,892 INFO L125 PetriNetUnfolderBase]: For 13354/13871 co-relation queries the response was YES. [2024-11-28 02:39:59,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18850 conditions, 5700 events. 2959/5700 cut-off events. For 13354/13871 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 41800 event pairs, 1047 based on Foata normal form. 202/5842 useless extension candidates. Maximal degree in co-relation 16161. Up to 2612 conditions per place. [2024-11-28 02:39:59,919 INFO L140 encePairwiseOnDemand]: 108/132 looper letters, 122 selfloop transitions, 72 changer transitions 0/229 dead transitions. [2024-11-28 02:39:59,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 229 transitions, 1803 flow [2024-11-28 02:39:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:39:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:39:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2024-11-28 02:39:59,921 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5800865800865801 [2024-11-28 02:39:59,921 INFO L175 Difference]: Start difference. First operand has 142 places, 150 transitions, 966 flow. Second operand 7 states and 536 transitions. [2024-11-28 02:39:59,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 229 transitions, 1803 flow [2024-11-28 02:40:00,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 229 transitions, 1752 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 02:40:00,046 INFO L231 Difference]: Finished difference. Result has 147 places, 179 transitions, 1449 flow [2024-11-28 02:40:00,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1449, PETRI_PLACES=147, PETRI_TRANSITIONS=179} [2024-11-28 02:40:00,047 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 25 predicate places. [2024-11-28 02:40:00,047 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 179 transitions, 1449 flow [2024-11-28 02:40:00,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 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) [2024-11-28 02:40:00,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:00,047 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:00,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:40:00,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:00,248 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:40:00,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:00,249 INFO L85 PathProgramCache]: Analyzing trace with hash -896002718, now seen corresponding path program 1 times [2024-11-28 02:40:00,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:00,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862663341] [2024-11-28 02:40:00,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:00,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:00,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:00,251 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:00,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:40:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:00,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:40:00,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:00,559 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_81| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_81| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_81|)))) is different from true [2024-11-28 02:40:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:00,572 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:00,573 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:00,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862663341] [2024-11-28 02:40:00,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862663341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:00,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:00,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:00,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917077185] [2024-11-28 02:40:00,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:00,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:00,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:00,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:00,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-28 02:40:00,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 132 [2024-11-28 02:40:00,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 179 transitions, 1449 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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) [2024-11-28 02:40:00,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:00,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 132 [2024-11-28 02:40:00,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:02,202 INFO L124 PetriNetUnfolderBase]: 4240/7754 cut-off events. [2024-11-28 02:40:02,203 INFO L125 PetriNetUnfolderBase]: For 22946/22950 co-relation queries the response was YES. [2024-11-28 02:40:02,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29214 conditions, 7754 events. 4240/7754 cut-off events. For 22946/22950 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 57286 event pairs, 1790 based on Foata normal form. 1/7732 useless extension candidates. Maximal degree in co-relation 24488. Up to 3737 conditions per place. [2024-11-28 02:40:02,238 INFO L140 encePairwiseOnDemand]: 106/132 looper letters, 163 selfloop transitions, 37 changer transitions 4/229 dead transitions. [2024-11-28 02:40:02,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 229 transitions, 2121 flow [2024-11-28 02:40:02,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:40:02,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:40:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-11-28 02:40:02,240 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-11-28 02:40:02,240 INFO L175 Difference]: Start difference. First operand has 147 places, 179 transitions, 1449 flow. Second operand 5 states and 310 transitions. [2024-11-28 02:40:02,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 229 transitions, 2121 flow [2024-11-28 02:40:02,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 229 transitions, 2105 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-11-28 02:40:02,355 INFO L231 Difference]: Finished difference. Result has 154 places, 197 transitions, 1719 flow [2024-11-28 02:40:02,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1719, PETRI_PLACES=154, PETRI_TRANSITIONS=197} [2024-11-28 02:40:02,356 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 32 predicate places. [2024-11-28 02:40:02,356 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 197 transitions, 1719 flow [2024-11-28 02:40:02,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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) [2024-11-28 02:40:02,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:02,356 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:02,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 02:40:02,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:02,557 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:40:02,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:02,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1625776092, now seen corresponding path program 1 times [2024-11-28 02:40:02,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:02,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696286240] [2024-11-28 02:40:02,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:02,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:02,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:02,561 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:02,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:40:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:02,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:40:02,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:02,753 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 [2024-11-28 02:40:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:02,770 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:02,770 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:02,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696286240] [2024-11-28 02:40:02,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696286240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:02,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:02,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:40:02,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828037162] [2024-11-28 02:40:02,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:02,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:02,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:02,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:02,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:02,947 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 132 [2024-11-28 02:40:02,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 197 transitions, 1719 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2024-11-28 02:40:02,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:02,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 132 [2024-11-28 02:40:02,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:03,993 INFO L124 PetriNetUnfolderBase]: 2944/5684 cut-off events. [2024-11-28 02:40:03,993 INFO L125 PetriNetUnfolderBase]: For 24260/24797 co-relation queries the response was YES. [2024-11-28 02:40:04,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24453 conditions, 5684 events. 2944/5684 cut-off events. For 24260/24797 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 42955 event pairs, 1440 based on Foata normal form. 124/5614 useless extension candidates. Maximal degree in co-relation 20608. Up to 3902 conditions per place. [2024-11-28 02:40:04,034 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 110 selfloop transitions, 5 changer transitions 0/203 dead transitions. [2024-11-28 02:40:04,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 203 transitions, 1985 flow [2024-11-28 02:40:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:04,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:40:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2024-11-28 02:40:04,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2024-11-28 02:40:04,036 INFO L175 Difference]: Start difference. First operand has 154 places, 197 transitions, 1719 flow. Second operand 3 states and 257 transitions. [2024-11-28 02:40:04,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 203 transitions, 1985 flow [2024-11-28 02:40:04,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 203 transitions, 1900 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-28 02:40:04,162 INFO L231 Difference]: Finished difference. Result has 150 places, 195 transitions, 1640 flow [2024-11-28 02:40:04,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1640, PETRI_PLACES=150, PETRI_TRANSITIONS=195} [2024-11-28 02:40:04,163 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 28 predicate places. [2024-11-28 02:40:04,163 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 195 transitions, 1640 flow [2024-11-28 02:40:04,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2024-11-28 02:40:04,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:04,163 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:04,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:40:04,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:04,364 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:40:04,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1330151493, now seen corresponding path program 1 times [2024-11-28 02:40:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:04,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298292225] [2024-11-28 02:40:04,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:04,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:04,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:04,367 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:04,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:40:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:04,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:40:04,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:04,579 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 [2024-11-28 02:40:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:04,587 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:04,587 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:04,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298292225] [2024-11-28 02:40:04,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298292225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:04,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:04,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:40:04,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704496211] [2024-11-28 02:40:04,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:04,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:04,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:04,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:04,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:04,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 132 [2024-11-28 02:40:04,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 195 transitions, 1640 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2024-11-28 02:40:04,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:04,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 132 [2024-11-28 02:40:04,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:05,642 INFO L124 PetriNetUnfolderBase]: 2944/5676 cut-off events. [2024-11-28 02:40:05,642 INFO L125 PetriNetUnfolderBase]: For 22536/23073 co-relation queries the response was YES. [2024-11-28 02:40:05,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24059 conditions, 5676 events. 2944/5676 cut-off events. For 22536/23073 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 42873 event pairs, 1440 based on Foata normal form. 124/5606 useless extension candidates. Maximal degree in co-relation 23373. Up to 3902 conditions per place. [2024-11-28 02:40:05,675 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 110 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2024-11-28 02:40:05,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 201 transitions, 1906 flow [2024-11-28 02:40:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:05,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:40:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2024-11-28 02:40:05,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2024-11-28 02:40:05,676 INFO L175 Difference]: Start difference. First operand has 150 places, 195 transitions, 1640 flow. Second operand 3 states and 257 transitions. [2024-11-28 02:40:05,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 201 transitions, 1906 flow [2024-11-28 02:40:05,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 201 transitions, 1896 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:40:05,770 INFO L231 Difference]: Finished difference. Result has 148 places, 193 transitions, 1636 flow [2024-11-28 02:40:05,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1636, PETRI_PLACES=148, PETRI_TRANSITIONS=193} [2024-11-28 02:40:05,770 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 26 predicate places. [2024-11-28 02:40:05,771 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 193 transitions, 1636 flow [2024-11-28 02:40:05,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2024-11-28 02:40:05,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:05,771 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:05,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 02:40:05,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:05,975 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:40:05,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:05,976 INFO L85 PathProgramCache]: Analyzing trace with hash 803572441, now seen corresponding path program 1 times [2024-11-28 02:40:05,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:05,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759035828] [2024-11-28 02:40:05,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:05,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:05,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:05,980 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:05,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:40:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:06,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:40:06,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:06,178 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:06,178 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759035828] [2024-11-28 02:40:06,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759035828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:06,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:06,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:40:06,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437930822] [2024-11-28 02:40:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:06,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:06,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:06,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:06,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:06,180 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2024-11-28 02:40:06,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 193 transitions, 1636 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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) [2024-11-28 02:40:06,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:06,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2024-11-28 02:40:06,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:06,483 INFO L124 PetriNetUnfolderBase]: 265/536 cut-off events. [2024-11-28 02:40:06,483 INFO L125 PetriNetUnfolderBase]: For 1586/1640 co-relation queries the response was YES. [2024-11-28 02:40:06,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 536 events. 265/536 cut-off events. For 1586/1640 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2171 event pairs, 49 based on Foata normal form. 50/566 useless extension candidates. Maximal degree in co-relation 2145. Up to 269 conditions per place. [2024-11-28 02:40:06,485 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 60 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2024-11-28 02:40:06,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 100 transitions, 757 flow [2024-11-28 02:40:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:40:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2024-11-28 02:40:06,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2024-11-28 02:40:06,487 INFO L175 Difference]: Start difference. First operand has 148 places, 193 transitions, 1636 flow. Second operand 4 states and 335 transitions. [2024-11-28 02:40:06,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 100 transitions, 757 flow [2024-11-28 02:40:06,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 500 flow, removed 26 selfloop flow, removed 41 redundant places. [2024-11-28 02:40:06,493 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 308 flow [2024-11-28 02:40:06,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2024-11-28 02:40:06,494 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -30 predicate places. [2024-11-28 02:40:06,494 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 308 flow [2024-11-28 02:40:06,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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) [2024-11-28 02:40:06,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:06,495 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:06,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 02:40:06,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:06,695 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:40:06,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash 104042188, now seen corresponding path program 1 times [2024-11-28 02:40:06,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:06,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572011276] [2024-11-28 02:40:06,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:06,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:06,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:06,698 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:06,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:40:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:06,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:40:06,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:06,937 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 13 treesize of output 11 [2024-11-28 02:40:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:06,974 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:06,974 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:06,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572011276] [2024-11-28 02:40:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572011276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:06,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:06,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:40:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657903747] [2024-11-28 02:40:06,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:06,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:06,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:06,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:06,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:07,188 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2024-11-28 02:40:07,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2024-11-28 02:40:07,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:07,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2024-11-28 02:40:07,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:07,717 INFO L124 PetriNetUnfolderBase]: 322/727 cut-off events. [2024-11-28 02:40:07,717 INFO L125 PetriNetUnfolderBase]: For 1011/1013 co-relation queries the response was YES. [2024-11-28 02:40:07,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 727 events. 322/727 cut-off events. For 1011/1013 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3571 event pairs, 44 based on Foata normal form. 12/732 useless extension candidates. Maximal degree in co-relation 2087. Up to 283 conditions per place. [2024-11-28 02:40:07,719 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 83 selfloop transitions, 19 changer transitions 0/133 dead transitions. [2024-11-28 02:40:07,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 133 transitions, 771 flow [2024-11-28 02:40:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:40:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:40:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 569 transitions. [2024-11-28 02:40:07,722 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6158008658008658 [2024-11-28 02:40:07,722 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 308 flow. Second operand 7 states and 569 transitions. [2024-11-28 02:40:07,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 133 transitions, 771 flow [2024-11-28 02:40:07,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 133 transitions, 723 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:40:07,726 INFO L231 Difference]: Finished difference. Result has 96 places, 96 transitions, 405 flow [2024-11-28 02:40:07,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=405, PETRI_PLACES=96, PETRI_TRANSITIONS=96} [2024-11-28 02:40:07,726 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -26 predicate places. [2024-11-28 02:40:07,727 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 96 transitions, 405 flow [2024-11-28 02:40:07,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2024-11-28 02:40:07,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:07,727 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:07,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:40:07,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:07,928 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:40:07,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash 206628548, now seen corresponding path program 2 times [2024-11-28 02:40:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:07,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874784088] [2024-11-28 02:40:07,929 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:40:07,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:07,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:07,931 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:07,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:40:08,172 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:40:08,172 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:40:08,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:40:08,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:08,182 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 [2024-11-28 02:40:08,271 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 02:40:08,271 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 [2024-11-28 02:40:08,326 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 16 treesize of output 13 [2024-11-28 02:40:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:08,350 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:08,350 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:08,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874784088] [2024-11-28 02:40:08,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874784088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:08,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:08,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:08,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860911832] [2024-11-28 02:40:08,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:08,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:08,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:08,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:08,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:08,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2024-11-28 02:40:08,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 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) [2024-11-28 02:40:08,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:08,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2024-11-28 02:40:08,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:08,859 INFO L124 PetriNetUnfolderBase]: 317/670 cut-off events. [2024-11-28 02:40:08,860 INFO L125 PetriNetUnfolderBase]: For 994/1001 co-relation queries the response was YES. [2024-11-28 02:40:08,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2125 conditions, 670 events. 317/670 cut-off events. For 994/1001 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3071 event pairs, 152 based on Foata normal form. 2/651 useless extension candidates. Maximal degree in co-relation 2114. Up to 395 conditions per place. [2024-11-28 02:40:08,863 INFO L140 encePairwiseOnDemand]: 127/132 looper letters, 76 selfloop transitions, 7 changer transitions 0/111 dead transitions. [2024-11-28 02:40:08,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 111 transitions, 660 flow [2024-11-28 02:40:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:40:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-11-28 02:40:08,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5511363636363636 [2024-11-28 02:40:08,865 INFO L175 Difference]: Start difference. First operand has 96 places, 96 transitions, 405 flow. Second operand 4 states and 291 transitions. [2024-11-28 02:40:08,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 111 transitions, 660 flow [2024-11-28 02:40:08,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 111 transitions, 648 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-28 02:40:08,870 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 411 flow [2024-11-28 02:40:08,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2024-11-28 02:40:08,871 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2024-11-28 02:40:08,871 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 411 flow [2024-11-28 02:40:08,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 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) [2024-11-28 02:40:08,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:08,871 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:08,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 02:40:09,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:09,072 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:40:09,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash 969933495, now seen corresponding path program 1 times [2024-11-28 02:40:09,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:09,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267079270] [2024-11-28 02:40:09,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:09,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:09,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:09,075 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:09,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:40:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:09,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:40:09,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:09,323 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 [2024-11-28 02:40:09,330 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 [2024-11-28 02:40:09,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:40:09,619 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 [2024-11-28 02:40:09,632 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:40:09,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 02:40:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:09,662 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:09,662 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267079270] [2024-11-28 02:40:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267079270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:09,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:09,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:09,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93975031] [2024-11-28 02:40:09,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:09,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:09,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:09,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:09,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:10,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-28 02:40:10,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2024-11-28 02:40:10,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:10,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-28 02:40:10,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:10,212 INFO L124 PetriNetUnfolderBase]: 317/664 cut-off events. [2024-11-28 02:40:10,212 INFO L125 PetriNetUnfolderBase]: For 1004/1011 co-relation queries the response was YES. [2024-11-28 02:40:10,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 664 events. 317/664 cut-off events. For 1004/1011 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3006 event pairs, 223 based on Foata normal form. 4/642 useless extension candidates. Maximal degree in co-relation 2141. Up to 573 conditions per place. [2024-11-28 02:40:10,214 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 63 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-11-28 02:40:10,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 89 transitions, 533 flow [2024-11-28 02:40:10,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:40:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2024-11-28 02:40:10,215 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-11-28 02:40:10,216 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 411 flow. Second operand 4 states and 270 transitions. [2024-11-28 02:40:10,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 89 transitions, 533 flow [2024-11-28 02:40:10,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 519 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:40:10,219 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 393 flow [2024-11-28 02:40:10,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=393, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-28 02:40:10,220 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -30 predicate places. [2024-11-28 02:40:10,220 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 393 flow [2024-11-28 02:40:10,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2024-11-28 02:40:10,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:10,221 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:10,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 02:40:10,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:10,421 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:40:10,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:10,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1068695243, now seen corresponding path program 1 times [2024-11-28 02:40:10,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:10,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893378340] [2024-11-28 02:40:10,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:10,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:10,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:10,424 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:10,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:40:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:10,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:40:10,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:10,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:40:10,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:40:10,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:40:10,963 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:40:10,963 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:40:10,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2024-11-28 02:40:11,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:40:11,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 45 [2024-11-28 02:40:11,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:40:11,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 45 [2024-11-28 02:40:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:11,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:11,250 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:11,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893378340] [2024-11-28 02:40:11,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893378340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:11,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:11,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:40:11,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754935528] [2024-11-28 02:40:11,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:11,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:40:11,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:11,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:40:11,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:40:12,601 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2024-11-28 02:40:12,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 393 flow. Second operand has 9 states, 9 states have (on average 62.888888888888886) internal successors, (566), 9 states have internal predecessors, (566), 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) [2024-11-28 02:40:12,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:12,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2024-11-28 02:40:12,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:14,216 INFO L124 PetriNetUnfolderBase]: 474/978 cut-off events. [2024-11-28 02:40:14,216 INFO L125 PetriNetUnfolderBase]: For 1226/1228 co-relation queries the response was YES. [2024-11-28 02:40:14,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 978 events. 474/978 cut-off events. For 1226/1228 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4814 event pairs, 58 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 3000. Up to 260 conditions per place. [2024-11-28 02:40:14,221 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 123 selfloop transitions, 33 changer transitions 0/167 dead transitions. [2024-11-28 02:40:14,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 167 transitions, 1087 flow [2024-11-28 02:40:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:40:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 02:40:14,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 821 transitions. [2024-11-28 02:40:14,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5183080808080808 [2024-11-28 02:40:14,223 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 393 flow. Second operand 12 states and 821 transitions. [2024-11-28 02:40:14,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 167 transitions, 1087 flow [2024-11-28 02:40:14,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 167 transitions, 1075 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:40:14,228 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 525 flow [2024-11-28 02:40:14,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=525, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2024-11-28 02:40:14,229 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -19 predicate places. [2024-11-28 02:40:14,229 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 525 flow [2024-11-28 02:40:14,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 62.888888888888886) internal successors, (566), 9 states have internal predecessors, (566), 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) [2024-11-28 02:40:14,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:14,230 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:14,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 02:40:14,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:14,430 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:40:14,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:14,431 INFO L85 PathProgramCache]: Analyzing trace with hash -543443429, now seen corresponding path program 2 times [2024-11-28 02:40:14,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:14,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713581257] [2024-11-28 02:40:14,431 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:40:14,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:14,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:14,435 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:14,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:40:14,689 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:40:14,689 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:40:14,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:40:14,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:14,745 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 11 treesize of output 9 [2024-11-28 02:40:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:14,763 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:14,763 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:14,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713581257] [2024-11-28 02:40:14,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713581257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:14,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:14,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:40:14,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858795362] [2024-11-28 02:40:14,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:14,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:14,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:14,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:14,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:15,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2024-11-28 02:40:15,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 525 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2024-11-28 02:40:15,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:15,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2024-11-28 02:40:15,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:15,678 INFO L124 PetriNetUnfolderBase]: 526/1229 cut-off events. [2024-11-28 02:40:15,678 INFO L125 PetriNetUnfolderBase]: For 2762/2771 co-relation queries the response was YES. [2024-11-28 02:40:15,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 1229 events. 526/1229 cut-off events. For 2762/2771 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7102 event pairs, 107 based on Foata normal form. 21/1244 useless extension candidates. Maximal degree in co-relation 4062. Up to 480 conditions per place. [2024-11-28 02:40:15,682 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 112 selfloop transitions, 23 changer transitions 0/163 dead transitions. [2024-11-28 02:40:15,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 163 transitions, 1139 flow [2024-11-28 02:40:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:40:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:40:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2024-11-28 02:40:15,684 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6385281385281385 [2024-11-28 02:40:15,684 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 525 flow. Second operand 7 states and 590 transitions. [2024-11-28 02:40:15,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 163 transitions, 1139 flow [2024-11-28 02:40:15,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 163 transitions, 1071 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-28 02:40:15,691 INFO L231 Difference]: Finished difference. Result has 106 places, 106 transitions, 629 flow [2024-11-28 02:40:15,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=629, PETRI_PLACES=106, PETRI_TRANSITIONS=106} [2024-11-28 02:40:15,693 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2024-11-28 02:40:15,693 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 106 transitions, 629 flow [2024-11-28 02:40:15,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2024-11-28 02:40:15,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:15,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:15,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 02:40:15,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:15,894 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:40:15,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:15,895 INFO L85 PathProgramCache]: Analyzing trace with hash 881306037, now seen corresponding path program 3 times [2024-11-28 02:40:15,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:15,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961877109] [2024-11-28 02:40:15,895 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:40:15,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:15,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:15,897 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:15,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 02:40:16,139 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:40:16,139 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:40:16,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:40:16,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:16,181 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 11 treesize of output 9 [2024-11-28 02:40:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:16,199 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:16,199 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:16,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961877109] [2024-11-28 02:40:16,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961877109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:16,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:16,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:40:16,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458388288] [2024-11-28 02:40:16,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:16,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:16,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:16,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:16,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:16,390 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2024-11-28 02:40:16,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 106 transitions, 629 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2024-11-28 02:40:16,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:40:16,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2024-11-28 02:40:16,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:40:16,956 INFO L124 PetriNetUnfolderBase]: 338/872 cut-off events. [2024-11-28 02:40:16,956 INFO L125 PetriNetUnfolderBase]: For 2377/2384 co-relation queries the response was YES. [2024-11-28 02:40:16,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3069 conditions, 872 events. 338/872 cut-off events. For 2377/2384 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4499 event pairs, 90 based on Foata normal form. 21/884 useless extension candidates. Maximal degree in co-relation 3050. Up to 258 conditions per place. [2024-11-28 02:40:16,959 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 103 selfloop transitions, 23 changer transitions 0/154 dead transitions. [2024-11-28 02:40:16,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 154 transitions, 1104 flow [2024-11-28 02:40:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:40:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:40:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 510 transitions. [2024-11-28 02:40:16,961 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2024-11-28 02:40:16,961 INFO L175 Difference]: Start difference. First operand has 106 places, 106 transitions, 629 flow. Second operand 6 states and 510 transitions. [2024-11-28 02:40:16,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 154 transitions, 1104 flow [2024-11-28 02:40:16,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 154 transitions, 1032 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-28 02:40:16,966 INFO L231 Difference]: Finished difference. Result has 110 places, 103 transitions, 651 flow [2024-11-28 02:40:16,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=651, PETRI_PLACES=110, PETRI_TRANSITIONS=103} [2024-11-28 02:40:16,966 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -12 predicate places. [2024-11-28 02:40:16,966 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 103 transitions, 651 flow [2024-11-28 02:40:16,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2024-11-28 02:40:16,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:40:16,967 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:16,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 02:40:17,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:17,168 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:40:17,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:17,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1868544369, now seen corresponding path program 4 times [2024-11-28 02:40:17,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:17,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572192431] [2024-11-28 02:40:17,168 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:40:17,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:17,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:17,170 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:17,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 02:40:17,443 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:40:17,443 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:40:17,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:40:17,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:17,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:40:17,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:40:17,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:40:17,704 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:40:17,704 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:40:17,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2024-11-28 02:40:17,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:40:17,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 75 [2024-11-28 02:40:20,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:40:20,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 123 treesize of output 63 [2024-11-28 02:40:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:20,385 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:20,385 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:20,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572192431] [2024-11-28 02:40:20,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572192431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:20,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:20,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:40:20,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213578778] [2024-11-28 02:40:20,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:20,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:40:20,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:20,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:40:20,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2024-11-28 02:40:23,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:40:26,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:40:29,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:40:31,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:40:34,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:40:37,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:40:40,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:40:43,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:40:45,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:40:48,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:40:51,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:40:55,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:40:58,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:01,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:04,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:07,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:10,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:12,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:15,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:18,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:22,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:25,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:29,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:32,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:36,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:40,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:43,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:46,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:49,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:52,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:55,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:58,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:01,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:04,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:08,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:08,400 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 132 [2024-11-28 02:42:08,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 103 transitions, 651 flow. Second operand has 9 states, 9 states have (on average 34.111111111111114) internal successors, (307), 9 states have internal predecessors, (307), 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) [2024-11-28 02:42:08,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:42:08,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 132 [2024-11-28 02:42:08,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:42:13,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:19,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:23,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:26,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:34,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:41,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:44,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:47,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:50,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:53,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:42:56,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:43:08,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:43:11,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:43:12,314 INFO L124 PetriNetUnfolderBase]: 466/997 cut-off events. [2024-11-28 02:43:12,314 INFO L125 PetriNetUnfolderBase]: For 3223/3227 co-relation queries the response was YES. [2024-11-28 02:43:12,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3683 conditions, 997 events. 466/997 cut-off events. For 3223/3227 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4698 event pairs, 23 based on Foata normal form. 6/999 useless extension candidates. Maximal degree in co-relation 3663. Up to 284 conditions per place. [2024-11-28 02:43:12,319 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 127 selfloop transitions, 39 changer transitions 0/172 dead transitions. [2024-11-28 02:43:12,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1458 flow [2024-11-28 02:43:12,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:43:12,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 02:43:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 542 transitions. [2024-11-28 02:43:12,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29329004329004327 [2024-11-28 02:43:12,320 INFO L175 Difference]: Start difference. First operand has 110 places, 103 transitions, 651 flow. Second operand 14 states and 542 transitions. [2024-11-28 02:43:12,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1458 flow [2024-11-28 02:43:12,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 172 transitions, 1432 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-28 02:43:12,326 INFO L231 Difference]: Finished difference. Result has 120 places, 104 transitions, 742 flow [2024-11-28 02:43:12,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=742, PETRI_PLACES=120, PETRI_TRANSITIONS=104} [2024-11-28 02:43:12,327 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -2 predicate places. [2024-11-28 02:43:12,327 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 104 transitions, 742 flow [2024-11-28 02:43:12,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.111111111111114) internal successors, (307), 9 states have internal predecessors, (307), 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) [2024-11-28 02:43:12,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:43:12,327 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:12,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 02:43:12,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:12,527 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:43:12,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1646893525, now seen corresponding path program 1 times [2024-11-28 02:43:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:43:12,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75124414] [2024-11-28 02:43:12,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:12,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:12,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:12,530 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:43:12,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 02:43:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:12,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:43:12,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:43:12,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-11-28 02:43:13,309 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:13,310 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:13,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2024-11-28 02:43:13,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 71 [2024-11-28 02:43:13,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 61 [2024-11-28 02:43:14,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:14,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:14,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:14,003 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:14,003 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:14,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:43:14,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 88 [2024-11-28 02:43:14,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:43:14,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 81 [2024-11-28 02:43:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:43:14,394 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:43:14,394 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:43:14,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75124414] [2024-11-28 02:43:14,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75124414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:14,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:14,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:43:14,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792911233] [2024-11-28 02:43:14,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:14,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:43:14,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:43:14,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:43:14,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:43:17,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-28 02:43:17,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 104 transitions, 742 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:43:17,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:43:17,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-28 02:43:17,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:43:23,004 INFO L124 PetriNetUnfolderBase]: 550/1187 cut-off events. [2024-11-28 02:43:23,004 INFO L125 PetriNetUnfolderBase]: For 4249/4251 co-relation queries the response was YES. [2024-11-28 02:43:23,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4563 conditions, 1187 events. 550/1187 cut-off events. For 4249/4251 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5894 event pairs, 106 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 4542. Up to 473 conditions per place. [2024-11-28 02:43:23,011 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 159 selfloop transitions, 68 changer transitions 0/233 dead transitions. [2024-11-28 02:43:23,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 233 transitions, 2060 flow [2024-11-28 02:43:23,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:43:23,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 02:43:23,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1460 transitions. [2024-11-28 02:43:23,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48089591567852435 [2024-11-28 02:43:23,014 INFO L175 Difference]: Start difference. First operand has 120 places, 104 transitions, 742 flow. Second operand 23 states and 1460 transitions. [2024-11-28 02:43:23,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 233 transitions, 2060 flow [2024-11-28 02:43:23,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 233 transitions, 1948 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-11-28 02:43:23,022 INFO L231 Difference]: Finished difference. Result has 145 places, 150 transitions, 1281 flow [2024-11-28 02:43:23,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1281, PETRI_PLACES=145, PETRI_TRANSITIONS=150} [2024-11-28 02:43:23,023 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 23 predicate places. [2024-11-28 02:43:23,023 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 150 transitions, 1281 flow [2024-11-28 02:43:23,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:43:23,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:43:23,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:23,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 02:43:23,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:23,224 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:43:23,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:23,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1177024455, now seen corresponding path program 2 times [2024-11-28 02:43:23,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:43:23,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954805335] [2024-11-28 02:43:23,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:43:23,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:23,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:23,227 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:43:23,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 02:43:23,494 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:43:23,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:43:23,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:43:23,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:43:23,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-11-28 02:43:23,968 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:23,968 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:23,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2024-11-28 02:43:24,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 71 [2024-11-28 02:43:24,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 61 [2024-11-28 02:43:24,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:24,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:24,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:24,885 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:24,885 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:24,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:43:24,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 88 [2024-11-28 02:43:25,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:43:25,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 81 [2024-11-28 02:43:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:43:25,171 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:43:25,171 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:43:25,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954805335] [2024-11-28 02:43:25,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954805335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:25,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:25,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:43:25,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357933171] [2024-11-28 02:43:25,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:25,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:43:25,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:43:25,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:43:25,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:43:30,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-28 02:43:30,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 150 transitions, 1281 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:43:30,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:43:30,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-28 02:43:30,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:43:36,157 INFO L124 PetriNetUnfolderBase]: 631/1360 cut-off events. [2024-11-28 02:43:36,158 INFO L125 PetriNetUnfolderBase]: For 4948/4950 co-relation queries the response was YES. [2024-11-28 02:43:36,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5606 conditions, 1360 events. 631/1360 cut-off events. For 4948/4950 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7107 event pairs, 88 based on Foata normal form. 3/1363 useless extension candidates. Maximal degree in co-relation 5575. Up to 595 conditions per place. [2024-11-28 02:43:36,163 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 176 selfloop transitions, 79 changer transitions 0/261 dead transitions. [2024-11-28 02:43:36,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 261 transitions, 2564 flow [2024-11-28 02:43:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:43:36,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 02:43:36,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1510 transitions. [2024-11-28 02:43:36,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47664141414141414 [2024-11-28 02:43:36,166 INFO L175 Difference]: Start difference. First operand has 145 places, 150 transitions, 1281 flow. Second operand 24 states and 1510 transitions. [2024-11-28 02:43:36,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 261 transitions, 2564 flow [2024-11-28 02:43:36,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 261 transitions, 2523 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-28 02:43:36,180 INFO L231 Difference]: Finished difference. Result has 175 places, 174 transitions, 1709 flow [2024-11-28 02:43:36,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1709, PETRI_PLACES=175, PETRI_TRANSITIONS=174} [2024-11-28 02:43:36,180 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 53 predicate places. [2024-11-28 02:43:36,181 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 174 transitions, 1709 flow [2024-11-28 02:43:36,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:43:36,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:43:36,181 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:36,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 02:43:36,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:36,382 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:43:36,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:36,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1170991869, now seen corresponding path program 3 times [2024-11-28 02:43:36,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:43:36,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776749369] [2024-11-28 02:43:36,383 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:43:36,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:36,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:36,384 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:43:36,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 02:43:36,655 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:43:36,656 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:43:36,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:43:36,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:43:36,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-11-28 02:43:37,125 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:37,126 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:37,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2024-11-28 02:43:37,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 71 [2024-11-28 02:43:37,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 61 [2024-11-28 02:43:37,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:37,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:37,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:37,902 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:37,903 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:37,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:43:37,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 88 [2024-11-28 02:43:38,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:43:38,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 81 [2024-11-28 02:43:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:43:38,332 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:43:38,332 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:43:38,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776749369] [2024-11-28 02:43:38,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776749369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:38,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:38,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:43:38,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926831357] [2024-11-28 02:43:38,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:38,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:43:38,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:43:38,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:43:38,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:43:42,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-28 02:43:42,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 174 transitions, 1709 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:43:42,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:43:42,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-28 02:43:42,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:43:47,369 INFO L124 PetriNetUnfolderBase]: 709/1529 cut-off events. [2024-11-28 02:43:47,369 INFO L125 PetriNetUnfolderBase]: For 6695/6697 co-relation queries the response was YES. [2024-11-28 02:43:47,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6779 conditions, 1529 events. 709/1529 cut-off events. For 6695/6697 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8263 event pairs, 80 based on Foata normal form. 3/1532 useless extension candidates. Maximal degree in co-relation 6737. Up to 563 conditions per place. [2024-11-28 02:43:47,376 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 183 selfloop transitions, 88 changer transitions 0/277 dead transitions. [2024-11-28 02:43:47,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 277 transitions, 2959 flow [2024-11-28 02:43:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:43:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 02:43:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1454 transitions. [2024-11-28 02:43:47,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47891963109354413 [2024-11-28 02:43:47,379 INFO L175 Difference]: Start difference. First operand has 175 places, 174 transitions, 1709 flow. Second operand 23 states and 1454 transitions. [2024-11-28 02:43:47,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 277 transitions, 2959 flow [2024-11-28 02:43:47,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 277 transitions, 2826 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-11-28 02:43:47,416 INFO L231 Difference]: Finished difference. Result has 196 places, 187 transitions, 1941 flow [2024-11-28 02:43:47,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1941, PETRI_PLACES=196, PETRI_TRANSITIONS=187} [2024-11-28 02:43:47,416 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 74 predicate places. [2024-11-28 02:43:47,416 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 187 transitions, 1941 flow [2024-11-28 02:43:47,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:43:47,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:43:47,417 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:47,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 02:43:47,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:47,618 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:43:47,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:47,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1644806327, now seen corresponding path program 4 times [2024-11-28 02:43:47,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:43:47,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556352295] [2024-11-28 02:43:47,619 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:43:47,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:47,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:47,620 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:43:47,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 02:43:47,915 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:43:47,915 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:43:47,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:43:47,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:43:47,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-11-28 02:43:48,363 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:48,364 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:48,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2024-11-28 02:43:48,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 71 [2024-11-28 02:43:48,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 61 [2024-11-28 02:43:49,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:49,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:49,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:49,063 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:49,063 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:49,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:43:49,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 88 [2024-11-28 02:43:49,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:43:49,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 81 [2024-11-28 02:43:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:43:49,366 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:43:49,366 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:43:49,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556352295] [2024-11-28 02:43:49,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556352295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:49,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:49,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:43:49,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425384037] [2024-11-28 02:43:49,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:49,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:43:49,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:43:49,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:43:49,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:43:52,642 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-28 02:43:52,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 187 transitions, 1941 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:43:52,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:43:52,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-28 02:43:52,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:43:57,894 INFO L124 PetriNetUnfolderBase]: 709/1522 cut-off events. [2024-11-28 02:43:57,894 INFO L125 PetriNetUnfolderBase]: For 7758/7760 co-relation queries the response was YES. [2024-11-28 02:43:57,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7081 conditions, 1522 events. 709/1522 cut-off events. For 7758/7760 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8234 event pairs, 162 based on Foata normal form. 3/1525 useless extension candidates. Maximal degree in co-relation 7033. Up to 700 conditions per place. [2024-11-28 02:43:57,902 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 188 selfloop transitions, 87 changer transitions 0/281 dead transitions. [2024-11-28 02:43:57,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 281 transitions, 3180 flow [2024-11-28 02:43:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:43:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 02:43:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1450 transitions. [2024-11-28 02:43:57,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4776021080368906 [2024-11-28 02:43:57,905 INFO L175 Difference]: Start difference. First operand has 196 places, 187 transitions, 1941 flow. Second operand 23 states and 1450 transitions. [2024-11-28 02:43:57,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 281 transitions, 3180 flow [2024-11-28 02:43:57,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 281 transitions, 2981 flow, removed 24 selfloop flow, removed 14 redundant places. [2024-11-28 02:43:57,927 INFO L231 Difference]: Finished difference. Result has 214 places, 203 transitions, 2206 flow [2024-11-28 02:43:57,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2206, PETRI_PLACES=214, PETRI_TRANSITIONS=203} [2024-11-28 02:43:57,928 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 92 predicate places. [2024-11-28 02:43:57,928 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 203 transitions, 2206 flow [2024-11-28 02:43:57,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:43:57,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:43:57,928 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:57,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 02:43:58,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:58,129 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:43:58,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash 87814561, now seen corresponding path program 5 times [2024-11-28 02:43:58,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:43:58,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601751879] [2024-11-28 02:43:58,130 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:43:58,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:58,131 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:43:58,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 02:43:58,418 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:43:58,419 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:43:58,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:43:58,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:43:58,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-11-28 02:43:58,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 46 [2024-11-28 02:43:59,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2024-11-28 02:43:59,284 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:59,284 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:59,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2024-11-28 02:43:59,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:59,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:59,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:43:59,525 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:59,525 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:43:59,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:43:59,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 110 [2024-11-28 02:43:59,844 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:43:59,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 149 treesize of output 89 [2024-11-28 02:43:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:43:59,877 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:43:59,878 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:43:59,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601751879] [2024-11-28 02:43:59,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601751879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:59,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:59,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:43:59,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174652125] [2024-11-28 02:43:59,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:59,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:43:59,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:43:59,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:43:59,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:44:04,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-28 02:44:04,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 203 transitions, 2206 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:44:04,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:04,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-28 02:44:04,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:09,917 INFO L124 PetriNetUnfolderBase]: 709/1521 cut-off events. [2024-11-28 02:44:09,917 INFO L125 PetriNetUnfolderBase]: For 8833/8835 co-relation queries the response was YES. [2024-11-28 02:44:09,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7186 conditions, 1521 events. 709/1521 cut-off events. For 8833/8835 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8177 event pairs, 169 based on Foata normal form. 3/1524 useless extension candidates. Maximal degree in co-relation 7130. Up to 711 conditions per place. [2024-11-28 02:44:09,925 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 184 selfloop transitions, 100 changer transitions 0/290 dead transitions. [2024-11-28 02:44:09,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 290 transitions, 3398 flow [2024-11-28 02:44:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:44:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 02:44:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1573 transitions. [2024-11-28 02:44:09,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4766666666666667 [2024-11-28 02:44:09,927 INFO L175 Difference]: Start difference. First operand has 214 places, 203 transitions, 2206 flow. Second operand 25 states and 1573 transitions. [2024-11-28 02:44:09,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 290 transitions, 3398 flow [2024-11-28 02:44:09,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 290 transitions, 3257 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-11-28 02:44:09,955 INFO L231 Difference]: Finished difference. Result has 240 places, 219 transitions, 2499 flow [2024-11-28 02:44:09,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2499, PETRI_PLACES=240, PETRI_TRANSITIONS=219} [2024-11-28 02:44:09,955 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 118 predicate places. [2024-11-28 02:44:09,955 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 219 transitions, 2499 flow [2024-11-28 02:44:09,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:44:09,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:09,956 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:09,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 02:44:10,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:10,157 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:44:10,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash -306073849, now seen corresponding path program 6 times [2024-11-28 02:44:10,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:44:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352592227] [2024-11-28 02:44:10,158 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:44:10,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:10,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:44:10,159 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:44:10,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 02:44:10,456 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:44:10,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:44:10,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:44:10,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:44:10,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-11-28 02:44:10,953 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:10,953 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:10,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2024-11-28 02:44:11,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 71 [2024-11-28 02:44:11,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 61 [2024-11-28 02:44:11,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:44:11,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:44:11,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:44:11,548 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:11,549 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:11,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:44:11,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 88 [2024-11-28 02:44:11,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:44:11,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 81 [2024-11-28 02:44:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:11,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:44:11,851 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:44:11,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352592227] [2024-11-28 02:44:11,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352592227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:11,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:11,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:44:11,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401036625] [2024-11-28 02:44:11,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:11,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:44:11,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:44:11,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:44:11,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:44:16,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-28 02:44:16,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 219 transitions, 2499 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:44:16,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:16,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-28 02:44:16,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:22,490 INFO L124 PetriNetUnfolderBase]: 715/1530 cut-off events. [2024-11-28 02:44:22,490 INFO L125 PetriNetUnfolderBase]: For 10526/10534 co-relation queries the response was YES. [2024-11-28 02:44:22,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7413 conditions, 1530 events. 715/1530 cut-off events. For 10526/10534 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8243 event pairs, 174 based on Foata normal form. 9/1538 useless extension candidates. Maximal degree in co-relation 7347. Up to 708 conditions per place. [2024-11-28 02:44:22,501 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 212 selfloop transitions, 101 changer transitions 0/319 dead transitions. [2024-11-28 02:44:22,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 319 transitions, 4012 flow [2024-11-28 02:44:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:44:22,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 02:44:22,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1458 transitions. [2024-11-28 02:44:22,503 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48023715415019763 [2024-11-28 02:44:22,503 INFO L175 Difference]: Start difference. First operand has 240 places, 219 transitions, 2499 flow. Second operand 23 states and 1458 transitions. [2024-11-28 02:44:22,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 319 transitions, 4012 flow [2024-11-28 02:44:22,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 319 transitions, 3812 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-11-28 02:44:22,539 INFO L231 Difference]: Finished difference. Result has 262 places, 244 transitions, 2919 flow [2024-11-28 02:44:22,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2919, PETRI_PLACES=262, PETRI_TRANSITIONS=244} [2024-11-28 02:44:22,540 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 140 predicate places. [2024-11-28 02:44:22,540 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 244 transitions, 2919 flow [2024-11-28 02:44:22,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:44:22,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:22,540 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:22,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 02:44:22,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:22,741 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:44:22,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:22,741 INFO L85 PathProgramCache]: Analyzing trace with hash -908046587, now seen corresponding path program 7 times [2024-11-28 02:44:22,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:44:22,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201268432] [2024-11-28 02:44:22,742 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:44:22,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:22,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:44:22,744 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:44:22,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 02:44:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:23,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:44:23,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:44:23,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-11-28 02:44:23,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 46 [2024-11-28 02:44:23,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2024-11-28 02:44:23,982 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:23,982 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:23,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2024-11-28 02:44:24,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:44:24,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:44:24,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:44:24,206 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:24,206 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:24,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:44:24,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 110 [2024-11-28 02:44:24,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:44:24,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 149 treesize of output 89 [2024-11-28 02:44:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:24,583 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:44:24,583 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:44:24,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201268432] [2024-11-28 02:44:24,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201268432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:24,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:24,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:44:24,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291325459] [2024-11-28 02:44:24,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:24,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:44:24,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:44:24,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:44:24,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:44:29,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-28 02:44:29,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 244 transitions, 2919 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:44:29,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:29,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-28 02:44:29,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:34,975 INFO L124 PetriNetUnfolderBase]: 786/1691 cut-off events. [2024-11-28 02:44:34,975 INFO L125 PetriNetUnfolderBase]: For 12787/12789 co-relation queries the response was YES. [2024-11-28 02:44:34,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8205 conditions, 1691 events. 786/1691 cut-off events. For 12787/12789 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9439 event pairs, 202 based on Foata normal form. 3/1693 useless extension candidates. Maximal degree in co-relation 8129. Up to 824 conditions per place. [2024-11-28 02:44:34,989 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 224 selfloop transitions, 113 changer transitions 0/343 dead transitions. [2024-11-28 02:44:34,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 343 transitions, 4410 flow [2024-11-28 02:44:34,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:44:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-28 02:44:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1617 transitions. [2024-11-28 02:44:34,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-11-28 02:44:34,991 INFO L175 Difference]: Start difference. First operand has 262 places, 244 transitions, 2919 flow. Second operand 26 states and 1617 transitions. [2024-11-28 02:44:34,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 343 transitions, 4410 flow [2024-11-28 02:44:35,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 343 transitions, 4117 flow, removed 80 selfloop flow, removed 14 redundant places. [2024-11-28 02:44:35,038 INFO L231 Difference]: Finished difference. Result has 282 places, 267 transitions, 3240 flow [2024-11-28 02:44:35,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2643, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3240, PETRI_PLACES=282, PETRI_TRANSITIONS=267} [2024-11-28 02:44:35,039 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 160 predicate places. [2024-11-28 02:44:35,039 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 267 transitions, 3240 flow [2024-11-28 02:44:35,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:44:35,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:35,039 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:35,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-28 02:44:35,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:35,240 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:44:35,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1314059767, now seen corresponding path program 8 times [2024-11-28 02:44:35,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:44:35,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264496714] [2024-11-28 02:44:35,241 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:44:35,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:35,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:44:35,242 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:44:35,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 02:44:35,562 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:44:35,562 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:44:35,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:44:35,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:44:35,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-11-28 02:44:36,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 46 [2024-11-28 02:44:36,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2024-11-28 02:44:36,701 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:36,702 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:36,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2024-11-28 02:44:36,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:44:36,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:44:36,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:44:36,954 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:36,955 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:36,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:44:36,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 110 [2024-11-28 02:44:37,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:44:37,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 149 treesize of output 89 [2024-11-28 02:44:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:37,451 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:44:37,451 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:44:37,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264496714] [2024-11-28 02:44:37,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264496714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:37,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:37,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:44:37,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655497997] [2024-11-28 02:44:37,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:37,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:44:37,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:44:37,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:44:37,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:44:44,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-28 02:44:44,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 267 transitions, 3240 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:44:44,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:44,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-28 02:44:44,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:48,586 INFO L124 PetriNetUnfolderBase]: 854/1840 cut-off events. [2024-11-28 02:44:48,586 INFO L125 PetriNetUnfolderBase]: For 14600/14602 co-relation queries the response was YES. [2024-11-28 02:44:48,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8765 conditions, 1840 events. 854/1840 cut-off events. For 14600/14602 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 10596 event pairs, 225 based on Foata normal form. 3/1842 useless extension candidates. Maximal degree in co-relation 8690. Up to 910 conditions per place. [2024-11-28 02:44:48,600 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 231 selfloop transitions, 116 changer transitions 0/353 dead transitions. [2024-11-28 02:44:48,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 353 transitions, 4637 flow [2024-11-28 02:44:48,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:44:48,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 02:44:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1559 transitions. [2024-11-28 02:44:48,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4724242424242424 [2024-11-28 02:44:48,603 INFO L175 Difference]: Start difference. First operand has 282 places, 267 transitions, 3240 flow. Second operand 25 states and 1559 transitions. [2024-11-28 02:44:48,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 353 transitions, 4637 flow [2024-11-28 02:44:48,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 353 transitions, 4318 flow, removed 80 selfloop flow, removed 17 redundant places. [2024-11-28 02:44:48,650 INFO L231 Difference]: Finished difference. Result has 299 places, 282 transitions, 3454 flow [2024-11-28 02:44:48,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2971, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3454, PETRI_PLACES=299, PETRI_TRANSITIONS=282} [2024-11-28 02:44:48,651 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 177 predicate places. [2024-11-28 02:44:48,651 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 282 transitions, 3454 flow [2024-11-28 02:44:48,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:44:48,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:48,651 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:48,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-28 02:44:48,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:48,852 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:44:48,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:48,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1634477245, now seen corresponding path program 9 times [2024-11-28 02:44:48,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:44:48,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859652035] [2024-11-28 02:44:48,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:44:48,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:48,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:44:48,855 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:44:48,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 02:44:49,167 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:44:49,167 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:44:49,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:44:49,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:44:49,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-11-28 02:44:49,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 46 [2024-11-28 02:44:49,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2024-11-28 02:44:50,094 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:50,095 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:50,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2024-11-28 02:44:50,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:44:50,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:44:50,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:44:50,308 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:50,309 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:44:50,313 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:44:50,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 110 [2024-11-28 02:44:50,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:44:50,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 149 treesize of output 89 [2024-11-28 02:44:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:50,660 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:44:50,661 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:44:50,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859652035] [2024-11-28 02:44:50,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859652035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:50,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:50,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:44:50,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227907151] [2024-11-28 02:44:50,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:50,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:44:50,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:44:50,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:44:50,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:44:53,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-28 02:44:53,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 282 transitions, 3454 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:44:53,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:53,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-28 02:44:53,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:59,950 INFO L124 PetriNetUnfolderBase]: 922/1989 cut-off events. [2024-11-28 02:44:59,950 INFO L125 PetriNetUnfolderBase]: For 16509/16511 co-relation queries the response was YES. [2024-11-28 02:44:59,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9290 conditions, 1989 events. 922/1989 cut-off events. For 16509/16511 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 11718 event pairs, 183 based on Foata normal form. 3/1991 useless extension candidates. Maximal degree in co-relation 9215. Up to 892 conditions per place. [2024-11-28 02:44:59,961 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 235 selfloop transitions, 132 changer transitions 0/373 dead transitions. [2024-11-28 02:44:59,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 373 transitions, 4928 flow [2024-11-28 02:44:59,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:44:59,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 02:44:59,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1559 transitions. [2024-11-28 02:44:59,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4724242424242424 [2024-11-28 02:44:59,964 INFO L175 Difference]: Start difference. First operand has 299 places, 282 transitions, 3454 flow. Second operand 25 states and 1559 transitions. [2024-11-28 02:44:59,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 373 transitions, 4928 flow [2024-11-28 02:45:00,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 373 transitions, 4724 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-11-28 02:45:00,018 INFO L231 Difference]: Finished difference. Result has 321 places, 295 transitions, 3755 flow [2024-11-28 02:45:00,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3755, PETRI_PLACES=321, PETRI_TRANSITIONS=295} [2024-11-28 02:45:00,018 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 199 predicate places. [2024-11-28 02:45:00,018 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 295 transitions, 3755 flow [2024-11-28 02:45:00,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:45:00,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:45:00,019 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:00,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 02:45:00,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:00,219 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:45:00,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:00,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1609685099, now seen corresponding path program 10 times [2024-11-28 02:45:00,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:45:00,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278304489] [2024-11-28 02:45:00,220 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:45:00,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:00,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:00,222 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:45:00,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 02:45:00,576 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:45:00,576 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:45:00,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:45:00,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:45:00,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-11-28 02:45:01,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 46 [2024-11-28 02:45:01,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2024-11-28 02:45:01,441 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:45:01,441 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:45:01,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2024-11-28 02:45:01,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:45:01,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:45:01,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:45:01,662 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:45:01,662 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 02:45:01,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:45:01,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 110 [2024-11-28 02:45:01,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:45:01,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 149 treesize of output 89 [2024-11-28 02:45:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:45:02,007 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:45:02,007 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:45:02,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278304489] [2024-11-28 02:45:02,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278304489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:02,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:02,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:45:02,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444657019] [2024-11-28 02:45:02,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:02,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:45:02,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:45:02,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:45:02,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:45:05,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-28 02:45:05,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 295 transitions, 3755 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:45:05,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:45:05,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-28 02:45:05,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:45:10,826 INFO L124 PetriNetUnfolderBase]: 922/1986 cut-off events. [2024-11-28 02:45:10,826 INFO L125 PetriNetUnfolderBase]: For 18375/18377 co-relation queries the response was YES. [2024-11-28 02:45:10,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9351 conditions, 1986 events. 922/1986 cut-off events. For 18375/18377 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 11763 event pairs, 258 based on Foata normal form. 3/1988 useless extension candidates. Maximal degree in co-relation 9270. Up to 987 conditions per place. [2024-11-28 02:45:10,841 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 236 selfloop transitions, 125 changer transitions 0/365 dead transitions. [2024-11-28 02:45:10,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 365 transitions, 4959 flow [2024-11-28 02:45:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:45:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 02:45:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1570 transitions. [2024-11-28 02:45:10,844 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47575757575757577 [2024-11-28 02:45:10,844 INFO L175 Difference]: Start difference. First operand has 321 places, 295 transitions, 3755 flow. Second operand 25 states and 1570 transitions. [2024-11-28 02:45:10,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 365 transitions, 4959 flow [2024-11-28 02:45:10,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 365 transitions, 4628 flow, removed 61 selfloop flow, removed 16 redundant places. [2024-11-28 02:45:10,908 INFO L231 Difference]: Finished difference. Result has 328 places, 296 transitions, 3732 flow [2024-11-28 02:45:10,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3405, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3732, PETRI_PLACES=328, PETRI_TRANSITIONS=296} [2024-11-28 02:45:10,908 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 206 predicate places. [2024-11-28 02:45:10,909 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 296 transitions, 3732 flow [2024-11-28 02:45:10,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-11-28 02:45:10,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:45:10,909 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:10,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 02:45:11,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:11,110 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-28 02:45:11,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:11,111 INFO L85 PathProgramCache]: Analyzing trace with hash 550081341, now seen corresponding path program 1 times [2024-11-28 02:45:11,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:45:11,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484677615] [2024-11-28 02:45:11,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:11,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:11,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:45:11,113 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:45:11,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 02:45:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:11,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:45:11,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:45:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:45:20,229 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:45:20,229 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:45:20,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484677615] [2024-11-28 02:45:20,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484677615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:20,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:20,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:45:20,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733086663] [2024-11-28 02:45:20,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:20,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:45:20,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:45:20,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:45:20,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2024-11-28 02:45:24,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:45:28,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:45:32,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:45:36,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:45:40,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:45:44,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:45:48,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:45:52,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:45:57,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:01,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:05,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:09,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:13,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:17,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:22,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:26,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:26,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 132 [2024-11-28 02:46:26,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 296 transitions, 3732 flow. Second operand has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:46:26,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:46:26,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 132 [2024-11-28 02:46:26,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:46:30,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:34,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:38,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:42,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:46,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:50,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:54,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:46:58,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:02,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:06,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:10,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:14,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:18,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:22,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:27,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:31,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:35,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:39,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:43,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:47,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:47:47,841 INFO L124 PetriNetUnfolderBase]: 922/1949 cut-off events. [2024-11-28 02:47:47,841 INFO L125 PetriNetUnfolderBase]: For 20421/20429 co-relation queries the response was YES. [2024-11-28 02:47:47,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9150 conditions, 1949 events. 922/1949 cut-off events. For 20421/20429 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 11703 event pairs, 409 based on Foata normal form. 2/1950 useless extension candidates. Maximal degree in co-relation 9071. Up to 1179 conditions per place. [2024-11-28 02:47:47,852 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 0 selfloop transitions, 0 changer transitions 361/361 dead transitions. [2024-11-28 02:47:47,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 361 transitions, 5066 flow [2024-11-28 02:47:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:47:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 02:47:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2024-11-28 02:47:47,854 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.329004329004329 [2024-11-28 02:47:47,854 INFO L175 Difference]: Start difference. First operand has 328 places, 296 transitions, 3732 flow. Second operand 7 states and 304 transitions. [2024-11-28 02:47:47,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 361 transitions, 5066 flow [2024-11-28 02:47:47,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 361 transitions, 4156 flow, removed 90 selfloop flow, removed 58 redundant places. [2024-11-28 02:47:47,901 INFO L231 Difference]: Finished difference. Result has 275 places, 0 transitions, 0 flow [2024-11-28 02:47:47,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2983, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=275, PETRI_TRANSITIONS=0} [2024-11-28 02:47:47,901 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 153 predicate places. [2024-11-28 02:47:47,902 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 0 transitions, 0 flow [2024-11-28 02:47:47,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 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) [2024-11-28 02:47:47,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 51 remaining) [2024-11-28 02:47:47,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 51 remaining) [2024-11-28 02:47:47,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (48 of 51 remaining) [2024-11-28 02:47:47,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 51 remaining) [2024-11-28 02:47:47,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 51 remaining) [2024-11-28 02:47:47,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 51 remaining) [2024-11-28 02:47:47,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 51 remaining) [2024-11-28 02:47:47,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 51 remaining) [2024-11-28 02:47:47,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 51 remaining) [2024-11-28 02:47:47,904 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (41 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (40 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 51 remaining) [2024-11-28 02:47:47,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (25 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (22 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK (21 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (20 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 51 remaining) [2024-11-28 02:47:47,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 51 remaining) [2024-11-28 02:47:47,907 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 51 remaining) [2024-11-28 02:47:47,907 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 51 remaining) [2024-11-28 02:47:47,907 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 51 remaining) [2024-11-28 02:47:47,907 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 51 remaining) [2024-11-28 02:47:47,907 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 51 remaining) [2024-11-28 02:47:47,907 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 51 remaining) [2024-11-28 02:47:47,907 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 51 remaining) [2024-11-28 02:47:47,907 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 51 remaining) [2024-11-28 02:47:47,907 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 51 remaining) [2024-11-28 02:47:47,907 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 51 remaining) [2024-11-28 02:47:47,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 02:47:48,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:48,108 INFO L422 BasicCegarLoop]: Path program histogram: [10, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:48,114 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:47:48,114 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:47:48,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:47:48 BasicIcfg [2024-11-28 02:47:48,123 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:47:48,125 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:47:48,125 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:47:48,125 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:47:48,126 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:39:29" (3/4) ... [2024-11-28 02:47:48,128 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:47:48,131 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure my_callback [2024-11-28 02:47:48,142 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 90 nodes and edges [2024-11-28 02:47:48,143 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-28 02:47:48,143 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-28 02:47:48,144 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 02:47:48,250 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:47:48,250 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:47:48,250 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:47:48,252 INFO L158 Benchmark]: Toolchain (without parser) took 501203.66ms. Allocated memory was 83.9MB in the beginning and 939.5MB in the end (delta: 855.6MB). Free memory was 57.2MB in the beginning and 498.7MB in the end (delta: -441.4MB). Peak memory consumption was 416.3MB. Max. memory is 16.1GB. [2024-11-28 02:47:48,253 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 83.9MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:47:48,254 INFO L158 Benchmark]: CACSL2BoogieTranslator took 888.01ms. Allocated memory is still 83.9MB. Free memory was 57.2MB in the beginning and 51.4MB in the end (delta: 5.8MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2024-11-28 02:47:48,255 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.99ms. Allocated memory is still 83.9MB. Free memory was 51.4MB in the beginning and 48.7MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:47:48,255 INFO L158 Benchmark]: Boogie Preprocessor took 73.46ms. Allocated memory is still 83.9MB. Free memory was 48.7MB in the beginning and 44.4MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:47:48,255 INFO L158 Benchmark]: RCFGBuilder took 1374.99ms. Allocated memory is still 83.9MB. Free memory was 44.4MB in the beginning and 32.4MB in the end (delta: 12.0MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2024-11-28 02:47:48,255 INFO L158 Benchmark]: TraceAbstraction took 498681.07ms. Allocated memory was 83.9MB in the beginning and 939.5MB in the end (delta: 855.6MB). Free memory was 32.0MB in the beginning and 505.6MB in the end (delta: -473.7MB). Peak memory consumption was 380.5MB. Max. memory is 16.1GB. [2024-11-28 02:47:48,256 INFO L158 Benchmark]: Witness Printer took 125.41ms. Allocated memory is still 939.5MB. Free memory was 505.6MB in the beginning and 498.7MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:47:48,257 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 83.9MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 888.01ms. Allocated memory is still 83.9MB. Free memory was 57.2MB in the beginning and 51.4MB in the end (delta: 5.8MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.99ms. Allocated memory is still 83.9MB. Free memory was 51.4MB in the beginning and 48.7MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.46ms. Allocated memory is still 83.9MB. Free memory was 48.7MB in the beginning and 44.4MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1374.99ms. Allocated memory is still 83.9MB. Free memory was 44.4MB in the beginning and 32.4MB in the end (delta: 12.0MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. * TraceAbstraction took 498681.07ms. Allocated memory was 83.9MB in the beginning and 939.5MB in the end (delta: 855.6MB). Free memory was 32.0MB in the beginning and 505.6MB in the end (delta: -473.7MB). Peak memory consumption was 380.5MB. Max. memory is 16.1GB. * Witness Printer took 125.41ms. Allocated memory is still 939.5MB. Free memory was 505.6MB in the beginning and 498.7MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3942]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3883]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 3883]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3883]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3883]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 3883]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 3883]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 135 locations, 51 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 498.5s, OverallIterations: 37, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 451.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 85 mSolverCounterUnknown, 11374 SdHoareTripleChecker+Valid, 409.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9474 mSDsluCounter, 12345 SdHoareTripleChecker+Invalid, 399.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 154 IncrementalHoareTripleChecker+Unchecked, 12109 mSDsCounter, 485 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41921 IncrementalHoareTripleChecker+Invalid, 42645 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 485 mSolverCounterUnsat, 236 mSDtfsCounter, 41921 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1247 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 420 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2204 ImplicationChecksByTransitivity, 43.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3755occurred in iteration=35, InterpolantAutomatonStates: 405, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 31.2s InterpolantComputationTime, 1090 NumberOfCodeBlocks, 1090 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1053 ConstructedInterpolants, 28 QuantifiedInterpolants, 26991 SizeOfPredicates, 333 NumberOfNonLiveVariables, 7976 ConjunctsInSsa, 641 ConjunctsInUnsatCore, 37 InterpolantComputations, 37 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 37 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 02:47:48,472 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-11-28 02:47:48,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0489e07-4c51-40fe-adef-bab1882fcd6b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE