./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd --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 edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:59:41,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:59:41,688 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 14:59:41,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:59:41,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:59:41,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:59:41,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:59:41,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:59:41,721 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:59:41,722 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:59:41,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:59:41,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:59:41,722 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:59:41,722 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:59:41,722 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:59:41,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:59:41,723 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:59:41,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:59:41,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:59:41,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:59:41,725 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:59:41,726 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:59:41,726 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:59:41,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:59:41,726 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:59:41,726 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:59:41,726 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:59:41,727 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:59:41,727 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:59:41,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:59:41,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:59:41,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:59:41,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:59:41,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:59:41,728 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:59:41,728 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:59:41,729 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:59:41,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:59:41,729 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:59:41,729 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:59:41,729 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:59:41,730 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:59:41,730 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_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd 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 -> edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e [2024-11-13 14:59:42,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:59:42,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:59:42,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:59:42,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:59:42,059 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:59:42,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i Unable to find full path for "g++" [2024-11-13 14:59:44,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:59:44,522 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:59:44,526 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2024-11-13 14:59:44,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/data/addc593e2/11bb770b1aad4ecab2a8b04b374a2e75/FLAG4105e0b0d [2024-11-13 14:59:44,672 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/data/addc593e2/11bb770b1aad4ecab2a8b04b374a2e75 [2024-11-13 14:59:44,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:59:44,679 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:59:44,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:59:44,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:59:44,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:59:44,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:59:44" (1/1) ... [2024-11-13 14:59:44,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab593c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:44, skipping insertion in model container [2024-11-13 14:59:44,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:59:44" (1/1) ... [2024-11-13 14:59:44,786 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:59:45,369 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:59:45,382 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:59:45,394 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:59:45,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:59:45,437 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) [2024-11-13 14:59:45,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@372b0ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:45, skipping insertion in model container [2024-11-13 14:59:45,438 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:59:45,438 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-13 14:59:45,440 INFO L158 Benchmark]: Toolchain (without parser) took 760.94ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 71.2MB in the end (delta: 17.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:59:45,441 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 117.4MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:59:45,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 756.10ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 71.2MB in the end (delta: 17.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:59:45,443 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 117.4MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 756.10ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 71.2MB in the end (delta: 17.5MB). Peak memory consumption was 8.4MB. 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_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd --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 edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:59:48,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:59:48,301 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 14:59:48,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:59:48,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:59:48,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:59:48,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:59:48,361 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:59:48,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:59:48,361 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:59:48,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:59:48,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:59:48,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:59:48,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:59:48,362 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:59:48,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:59:48,362 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:59:48,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:59:48,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:59:48,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:59:48,367 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:59:48,367 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:59:48,367 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:59:48,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:59:48,368 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:59:48,368 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 14:59:48,368 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:59:48,368 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 14:59:48,368 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:59:48,368 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:59:48,368 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:59:48,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:59:48,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:59:48,368 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:59:48,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:59:48,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:59:48,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:59:48,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:59:48,369 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 14:59:48,369 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 14:59:48,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:59:48,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:59:48,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:59:48,370 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:59:48,378 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_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd 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 -> edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e [2024-11-13 14:59:48,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:59:48,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:59:48,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:59:48,753 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:59:48,754 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:59:48,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i Unable to find full path for "g++" [2024-11-13 14:59:50,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:59:51,245 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:59:51,246 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2024-11-13 14:59:51,294 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/data/e29ef5877/d59ade99d20246b5a18052201513ed6b/FLAG1aa5a27df [2024-11-13 14:59:51,353 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/data/e29ef5877/d59ade99d20246b5a18052201513ed6b [2024-11-13 14:59:51,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:59:51,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:59:51,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:59:51,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:59:51,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:59:51,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:59:51" (1/1) ... [2024-11-13 14:59:51,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191dd058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:51, skipping insertion in model container [2024-11-13 14:59:51,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:59:51" (1/1) ... [2024-11-13 14:59:51,441 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:59:52,168 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:59:52,194 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:59:52,206 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:59:52,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:59:52,249 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-13 14:59:52,276 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:59:52,332 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:59:52,343 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:59:52,351 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:59:52,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:59:52,378 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:59:52,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:59:52,531 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:59:52,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52 WrapperNode [2024-11-13 14:59:52,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:59:52,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:59:52,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:59:52,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:59:52,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (1/1) ... [2024-11-13 14:59:52,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (1/1) ... [2024-11-13 14:59:52,602 INFO L138 Inliner]: procedures = 249, calls = 40, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 142 [2024-11-13 14:59:52,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:59:52,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:59:52,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:59:52,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:59:52,612 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (1/1) ... [2024-11-13 14:59:52,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (1/1) ... [2024-11-13 14:59:52,629 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (1/1) ... [2024-11-13 14:59:52,666 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]. [2024-11-13 14:59:52,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (1/1) ... [2024-11-13 14:59:52,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (1/1) ... [2024-11-13 14:59:52,693 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (1/1) ... [2024-11-13 14:59:52,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (1/1) ... [2024-11-13 14:59:52,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (1/1) ... [2024-11-13 14:59:52,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (1/1) ... [2024-11-13 14:59:52,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:59:52,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:59:52,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:59:52,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:59:52,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (1/1) ... [2024-11-13 14:59:52,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:59:52,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:52,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:59:52,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:59:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 14:59:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 14:59:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 14:59:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2024-11-13 14:59:52,790 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2024-11-13 14:59:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:59:52,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:59:52,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 14:59:52,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 14:59:52,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 14:59:52,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 14:59:52,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 14:59:52,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 14:59:52,793 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 14:59:52,793 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 14:59:52,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:59:52,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:59:52,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:59:52,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 14:59:52,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:59:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:59:52,796 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:59:53,228 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:59:53,231 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:59:54,057 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:59:54,058 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:59:54,308 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:59:54,308 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 14:59:54,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:59:54 BoogieIcfgContainer [2024-11-13 14:59:54,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:59:54,315 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:59:54,317 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:59:54,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:59:54,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:59:51" (1/3) ... [2024-11-13 14:59:54,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa92104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:59:54, skipping insertion in model container [2024-11-13 14:59:54,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:52" (2/3) ... [2024-11-13 14:59:54,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa92104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:59:54, skipping insertion in model container [2024-11-13 14:59:54,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:59:54" (3/3) ... [2024-11-13 14:59:54,327 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2024-11-13 14:59:54,347 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:59:54,348 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG race-2_1-container_of.i that has 2 procedures, 103 locations, 1 initial locations, 0 loop locations, and 37 error locations. [2024-11-13 14:59:54,349 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:59:54,499 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 14:59:54,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 132 transitions, 278 flow [2024-11-13 14:59:54,662 INFO L124 PetriNetUnfolderBase]: 18/165 cut-off events. [2024-11-13 14:59:54,665 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:59:54,670 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 521 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. [2024-11-13 14:59:54,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 132 transitions, 278 flow [2024-11-13 14:59:54,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 272 flow [2024-11-13 14:59:54,690 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:59:54,710 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;@cbfea41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:59:54,710 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-11-13 14:59:54,715 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:59:54,715 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-13 14:59:54,715 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:59:54,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:54,716 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:59:54,716 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)] === [2024-11-13 14:59:54,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:54,721 INFO L85 PathProgramCache]: Analyzing trace with hash 492833, now seen corresponding path program 1 times [2024-11-13 14:59:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:59:54,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242294933] [2024-11-13 14:59:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:54,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:54,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:54,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:59:54,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:59:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:54,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:59:54,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:59:55,002 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 [2024-11-13 14:59:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:59:55,027 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:59:55,028 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:59:55,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242294933] [2024-11-13 14:59:55,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242294933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:59:55,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:59:55,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:59:55,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612072278] [2024-11-13 14:59:55,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:55,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:59:55,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:59:55,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:59:55,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:59:55,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 14:59:55,329 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) [2024-11-13 14:59:55,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:59:55,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 14:59:55,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:59:56,215 INFO L124 PetriNetUnfolderBase]: 707/2028 cut-off events. [2024-11-13 14:59:56,215 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-13 14:59:56,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3244 conditions, 2028 events. 707/2028 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15833 event pairs, 95 based on Foata normal form. 156/1875 useless extension candidates. Maximal degree in co-relation 3071. Up to 1002 conditions per place. [2024-11-13 14:59:56,241 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 54 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2024-11-13 14:59:56,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 118 transitions, 360 flow [2024-11-13 14:59:56,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:59:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:59:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2024-11-13 14:59:56,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 14:59:56,267 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 272 flow. Second operand 3 states and 264 transitions. [2024-11-13 14:59:56,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 118 transitions, 360 flow [2024-11-13 14:59:56,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 352 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 14:59:56,283 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 224 flow [2024-11-13 14:59:56,287 INFO L260 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} [2024-11-13 14:59:56,293 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -12 predicate places. [2024-11-13 14:59:56,294 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 224 flow [2024-11-13 14:59:56,294 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) [2024-11-13 14:59:56,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:56,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:59:56,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:59:56,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:56,499 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)] === [2024-11-13 14:59:56,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash 492834, now seen corresponding path program 1 times [2024-11-13 14:59:56,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:59:56,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421244368] [2024-11-13 14:59:56,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:56,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:56,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:56,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:59:56,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:59:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:56,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:59:56,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:59:56,693 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 [2024-11-13 14:59:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:59:56,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:59:56,712 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:59:56,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421244368] [2024-11-13 14:59:56,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421244368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:59:56,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:59:56,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:59:56,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101427287] [2024-11-13 14:59:56,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:56,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:59:56,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:59:56,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:59:56,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:59:56,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 132 [2024-11-13 14:59:56,975 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) [2024-11-13 14:59:56,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:59:56,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 132 [2024-11-13 14:59:56,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:59:57,594 INFO L124 PetriNetUnfolderBase]: 707/2024 cut-off events. [2024-11-13 14:59:57,595 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-13 14:59:57,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3261 conditions, 2024 events. 707/2024 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15812 event pairs, 95 based on Foata normal form. 2/1717 useless extension candidates. Maximal degree in co-relation 488. Up to 1002 conditions per place. [2024-11-13 14:59:57,612 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 52 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-11-13 14:59:57,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 344 flow [2024-11-13 14:59:57,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:59:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:59:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2024-11-13 14:59:57,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-13 14:59:57,615 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 224 flow. Second operand 3 states and 256 transitions. [2024-11-13 14:59:57,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 344 flow [2024-11-13 14:59:57,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 114 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:59:57,619 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 216 flow [2024-11-13 14:59:57,619 INFO L260 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} [2024-11-13 14:59:57,620 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2024-11-13 14:59:57,620 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 216 flow [2024-11-13 14:59:57,621 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) [2024-11-13 14:59:57,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:57,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-13 14:59:57,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:59:57,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:57,825 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)] === [2024-11-13 14:59:57,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:57,826 INFO L85 PathProgramCache]: Analyzing trace with hash 15275921, now seen corresponding path program 1 times [2024-11-13 14:59:57,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:59:57,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838805653] [2024-11-13 14:59:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:57,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:57,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:57,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:59:57,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:59:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:57,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:59:57,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:59:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:59:57,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:59:57,983 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:59:57,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838805653] [2024-11-13 14:59:57,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838805653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:59:57,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:59:57,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:59:57,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053885319] [2024-11-13 14:59:57,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:57,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:59:57,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:59:57,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:59:57,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:59:58,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2024-11-13 14:59:58,211 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) [2024-11-13 14:59:58,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:59:58,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2024-11-13 14:59:58,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:59:58,828 INFO L124 PetriNetUnfolderBase]: 767/1786 cut-off events. [2024-11-13 14:59:58,828 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-13 14:59:58,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3121 conditions, 1786 events. 767/1786 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 12089 event pairs, 705 based on Foata normal form. 0/1505 useless extension candidates. Maximal degree in co-relation 1143. Up to 1189 conditions per place. [2024-11-13 14:59:58,842 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 52 selfloop transitions, 3 changer transitions 2/115 dead transitions. [2024-11-13 14:59:58,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 115 transitions, 350 flow [2024-11-13 14:59:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:59:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:59:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2024-11-13 14:59:58,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 14:59:58,845 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 216 flow. Second operand 3 states and 264 transitions. [2024-11-13 14:59:58,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 115 transitions, 350 flow [2024-11-13 14:59:58,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 115 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:59:58,851 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 221 flow [2024-11-13 14:59:58,851 INFO L260 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} [2024-11-13 14:59:58,852 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -15 predicate places. [2024-11-13 14:59:58,852 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 221 flow [2024-11-13 14:59:58,852 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) [2024-11-13 14:59:58,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:58,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:59:58,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 14:59:59,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:59,056 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)] === [2024-11-13 14:59:59,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash 918000892, now seen corresponding path program 1 times [2024-11-13 14:59:59,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:59:59,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697790324] [2024-11-13 14:59:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:59,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:59,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:59,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:59:59,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:59:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:59,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 14:59:59,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:59:59,285 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:59:59,286 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:59:59,287 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:59:59,298 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 [2024-11-13 14:59:59,392 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:59:59,393 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:59:59,394 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:59:59,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:59:59,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2024-11-13 14:59:59,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:59:59,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 157 treesize of output 61 [2024-11-13 14:59:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:59:59,743 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:59:59,743 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:59:59,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697790324] [2024-11-13 14:59:59,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697790324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:59:59,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:59:59,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:59:59,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546215909] [2024-11-13 14:59:59,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:59,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:59:59,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:59:59,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:59:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:00,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:00:00,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 221 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) [2024-11-13 15:00:00,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:00,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:00:00,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:01,553 INFO L124 PetriNetUnfolderBase]: 1153/2646 cut-off events. [2024-11-13 15:00:01,553 INFO L125 PetriNetUnfolderBase]: For 152/153 co-relation queries the response was YES. [2024-11-13 15:00:01,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4638 conditions, 2646 events. 1153/2646 cut-off events. For 152/153 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 19179 event pairs, 684 based on Foata normal form. 2/2324 useless extension candidates. Maximal degree in co-relation 4309. Up to 1845 conditions per place. [2024-11-13 15:00:01,575 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 49 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2024-11-13 15:00:01,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 107 transitions, 346 flow [2024-11-13 15:00:01,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:00:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:00:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2024-11-13 15:00:01,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-11-13 15:00:01,580 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 221 flow. Second operand 5 states and 380 transitions. [2024-11-13 15:00:01,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 107 transitions, 346 flow [2024-11-13 15:00:01,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 107 transitions, 335 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-13 15:00:01,591 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 236 flow [2024-11-13 15:00:01,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=103, PETRI_TRANSITIONS=100} [2024-11-13 15:00:01,595 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -19 predicate places. [2024-11-13 15:00:01,595 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 236 flow [2024-11-13 15:00:01,595 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) [2024-11-13 15:00:01,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:01,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:01,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:00:01,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:01,797 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:01,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:01,798 INFO L85 PathProgramCache]: Analyzing trace with hash -859869638, now seen corresponding path program 1 times [2024-11-13 15:00:01,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:01,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122009788] [2024-11-13 15:00:01,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:01,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:01,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:01,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:01,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:00:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:01,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:00:01,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:01,973 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 [2024-11-13 15:00:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:02,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:02,037 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:02,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122009788] [2024-11-13 15:00:02,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122009788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:02,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:02,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:00:02,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033307842] [2024-11-13 15:00:02,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:02,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:00:02,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:02,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:00:02,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:02,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 132 [2024-11-13 15:00:02,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 100 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:02,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:02,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 132 [2024-11-13 15:00:02,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:02,862 INFO L124 PetriNetUnfolderBase]: 979/2255 cut-off events. [2024-11-13 15:00:02,862 INFO L125 PetriNetUnfolderBase]: For 53/56 co-relation queries the response was YES. [2024-11-13 15:00:02,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4016 conditions, 2255 events. 979/2255 cut-off events. For 53/56 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 15676 event pairs, 748 based on Foata normal form. 0/2062 useless extension candidates. Maximal degree in co-relation 1943. Up to 1391 conditions per place. [2024-11-13 15:00:02,879 INFO L140 encePairwiseOnDemand]: 123/132 looper letters, 52 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-13 15:00:02,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 358 flow [2024-11-13 15:00:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:00:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:00:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2024-11-13 15:00:02,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-11-13 15:00:02,881 INFO L175 Difference]: Start difference. First operand has 103 places, 100 transitions, 236 flow. Second operand 3 states and 246 transitions. [2024-11-13 15:00:02,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 358 flow [2024-11-13 15:00:02,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 348 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:00:02,885 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 224 flow [2024-11-13 15:00:02,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=216, 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=224, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2024-11-13 15:00:02,887 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -25 predicate places. [2024-11-13 15:00:02,887 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 224 flow [2024-11-13 15:00:02,888 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) [2024-11-13 15:00:02,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:02,888 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:02,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:00:03,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:03,089 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:03,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:03,089 INFO L85 PathProgramCache]: Analyzing trace with hash -859869637, now seen corresponding path program 1 times [2024-11-13 15:00:03,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:03,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004300525] [2024-11-13 15:00:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:03,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:03,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:03,092 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:03,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:00:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:03,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:00:03,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:03,279 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 [2024-11-13 15:00:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:03,414 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:03,414 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:03,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004300525] [2024-11-13 15:00:03,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004300525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:03,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:03,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:00:03,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127318278] [2024-11-13 15:00:03,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:03,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:00:03,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:03,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:00:03,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:03,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:00:03,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 224 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) [2024-11-13 15:00:03,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:03,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:00:03,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:04,228 INFO L124 PetriNetUnfolderBase]: 835/1960 cut-off events. [2024-11-13 15:00:04,229 INFO L125 PetriNetUnfolderBase]: For 93/96 co-relation queries the response was YES. [2024-11-13 15:00:04,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3522 conditions, 1960 events. 835/1960 cut-off events. For 93/96 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 13351 event pairs, 538 based on Foata normal form. 90/1867 useless extension candidates. Maximal degree in co-relation 2856. Up to 1012 conditions per place. [2024-11-13 15:00:04,252 INFO L140 encePairwiseOnDemand]: 125/132 looper letters, 63 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-11-13 15:00:04,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 112 transitions, 392 flow [2024-11-13 15:00:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:00:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:00:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2024-11-13 15:00:04,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-13 15:00:04,256 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 224 flow. Second operand 3 states and 261 transitions. [2024-11-13 15:00:04,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 112 transitions, 392 flow [2024-11-13 15:00:04,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 112 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:00:04,287 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 237 flow [2024-11-13 15:00:04,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=216, 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=237, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-11-13 15:00:04,290 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2024-11-13 15:00:04,290 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 237 flow [2024-11-13 15:00:04,290 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) [2024-11-13 15:00:04,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:04,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:04,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:00:04,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:04,491 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:04,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:04,491 INFO L85 PathProgramCache]: Analyzing trace with hash -797998779, now seen corresponding path program 1 times [2024-11-13 15:00:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:04,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520810138] [2024-11-13 15:00:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:04,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:04,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:04,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:04,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:00:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:04,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:00:04,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:04,745 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:04,745 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:04,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520810138] [2024-11-13 15:00:04,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520810138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:04,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:04,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:00:04,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779661575] [2024-11-13 15:00:04,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:04,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:00:04,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:04,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:00:04,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:00:05,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 132 [2024-11-13 15:00:05,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:05,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:05,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 132 [2024-11-13 15:00:05,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:06,819 INFO L124 PetriNetUnfolderBase]: 1177/2694 cut-off events. [2024-11-13 15:00:06,820 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-11-13 15:00:06,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5054 conditions, 2694 events. 1177/2694 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 19134 event pairs, 145 based on Foata normal form. 62/2638 useless extension candidates. Maximal degree in co-relation 3208. Up to 1078 conditions per place. [2024-11-13 15:00:06,836 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 102 selfloop transitions, 15 changer transitions 1/162 dead transitions. [2024-11-13 15:00:06,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 162 transitions, 628 flow [2024-11-13 15:00:06,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:00:06,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:00:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 626 transitions. [2024-11-13 15:00:06,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5928030303030303 [2024-11-13 15:00:06,839 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 237 flow. Second operand 8 states and 626 transitions. [2024-11-13 15:00:06,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 162 transitions, 628 flow [2024-11-13 15:00:06,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 162 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:00:06,845 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 341 flow [2024-11-13 15:00:06,845 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=234, 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=341, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2024-11-13 15:00:06,847 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -14 predicate places. [2024-11-13 15:00:06,848 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 341 flow [2024-11-13 15:00:06,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:06,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:06,849 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:06,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:00:07,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:07,050 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:07,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:07,050 INFO L85 PathProgramCache]: Analyzing trace with hash -797998778, now seen corresponding path program 1 times [2024-11-13 15:00:07,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:07,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851471795] [2024-11-13 15:00:07,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:07,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:07,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:07,057 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:07,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:00:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:07,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:00:07,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:07,262 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 [2024-11-13 15:00:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:07,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:07,466 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:07,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851471795] [2024-11-13 15:00:07,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851471795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:07,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:07,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:07,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181793448] [2024-11-13 15:00:07,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:07,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:00:07,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:07,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:00:07,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:08,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 132 [2024-11-13 15:00:08,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:08,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:08,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 132 [2024-11-13 15:00:08,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:09,024 INFO L124 PetriNetUnfolderBase]: 910/2220 cut-off events. [2024-11-13 15:00:09,024 INFO L125 PetriNetUnfolderBase]: For 943/1029 co-relation queries the response was YES. [2024-11-13 15:00:09,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4479 conditions, 2220 events. 910/2220 cut-off events. For 943/1029 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 15744 event pairs, 154 based on Foata normal form. 257/2404 useless extension candidates. Maximal degree in co-relation 4083. Up to 1074 conditions per place. [2024-11-13 15:00:09,041 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 89 selfloop transitions, 12 changer transitions 2/154 dead transitions. [2024-11-13 15:00:09,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 154 transitions, 655 flow [2024-11-13 15:00:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:09,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2024-11-13 15:00:09,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6201298701298701 [2024-11-13 15:00:09,044 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 341 flow. Second operand 7 states and 573 transitions. [2024-11-13 15:00:09,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 154 transitions, 655 flow [2024-11-13 15:00:09,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 154 transitions, 655 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:00:09,053 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 401 flow [2024-11-13 15:00:09,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=341, 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=401, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2024-11-13 15:00:09,054 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -5 predicate places. [2024-11-13 15:00:09,054 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 401 flow [2024-11-13 15:00:09,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:09,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:09,055 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:09,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 15:00:09,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:09,259 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:09,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:09,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1027020276, now seen corresponding path program 1 times [2024-11-13 15:00:09,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:09,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762039784] [2024-11-13 15:00:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:09,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:09,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:09,263 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:09,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:00:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:09,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:00:09,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:09,493 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 [2024-11-13 15:00:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:09,655 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:09,655 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:09,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762039784] [2024-11-13 15:00:09,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762039784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:09,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:09,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:09,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791459118] [2024-11-13 15:00:09,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:09,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:00:09,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:09,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:00:09,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:10,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 132 [2024-11-13 15:00:10,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 401 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:10,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:10,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 132 [2024-11-13 15:00:10,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:10,953 INFO L124 PetriNetUnfolderBase]: 1336/3053 cut-off events. [2024-11-13 15:00:10,953 INFO L125 PetriNetUnfolderBase]: For 2526/2676 co-relation queries the response was YES. [2024-11-13 15:00:10,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6754 conditions, 3053 events. 1336/3053 cut-off events. For 2526/2676 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 22258 event pairs, 340 based on Foata normal form. 98/3084 useless extension candidates. Maximal degree in co-relation 5927. Up to 1093 conditions per place. [2024-11-13 15:00:10,970 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 111 selfloop transitions, 20 changer transitions 0/179 dead transitions. [2024-11-13 15:00:10,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 179 transitions, 904 flow [2024-11-13 15:00:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:00:10,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:00:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 644 transitions. [2024-11-13 15:00:10,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6098484848484849 [2024-11-13 15:00:10,973 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 401 flow. Second operand 8 states and 644 transitions. [2024-11-13 15:00:10,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 179 transitions, 904 flow [2024-11-13 15:00:10,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 179 transitions, 871 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-13 15:00:10,982 INFO L231 Difference]: Finished difference. Result has 123 places, 118 transitions, 529 flow [2024-11-13 15:00:10,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=529, PETRI_PLACES=123, PETRI_TRANSITIONS=118} [2024-11-13 15:00:10,983 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 1 predicate places. [2024-11-13 15:00:10,984 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 118 transitions, 529 flow [2024-11-13 15:00:10,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:10,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:10,985 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:11,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:00:11,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:11,185 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)] === [2024-11-13 15:00:11,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:11,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1027020275, now seen corresponding path program 1 times [2024-11-13 15:00:11,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:11,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697371426] [2024-11-13 15:00:11,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:11,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:11,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:11,188 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:11,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:00:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:11,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:00:11,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:11,346 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 [2024-11-13 15:00:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:11,503 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:11,504 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:11,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697371426] [2024-11-13 15:00:11,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697371426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:11,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:11,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058482594] [2024-11-13 15:00:11,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:11,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:00:11,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:00:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:12,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 132 [2024-11-13 15:00:12,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 118 transitions, 529 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:12,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:12,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 132 [2024-11-13 15:00:12,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:12,854 INFO L124 PetriNetUnfolderBase]: 1002/2492 cut-off events. [2024-11-13 15:00:12,855 INFO L125 PetriNetUnfolderBase]: For 2860/3068 co-relation queries the response was YES. [2024-11-13 15:00:12,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5944 conditions, 2492 events. 1002/2492 cut-off events. For 2860/3068 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 18373 event pairs, 160 based on Foata normal form. 330/2781 useless extension candidates. Maximal degree in co-relation 5335. Up to 1228 conditions per place. [2024-11-13 15:00:12,866 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 98 selfloop transitions, 17 changer transitions 1/169 dead transitions. [2024-11-13 15:00:12,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 169 transitions, 909 flow [2024-11-13 15:00:12,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 575 transitions. [2024-11-13 15:00:12,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6222943722943723 [2024-11-13 15:00:12,869 INFO L175 Difference]: Start difference. First operand has 123 places, 118 transitions, 529 flow. Second operand 7 states and 575 transitions. [2024-11-13 15:00:12,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 169 transitions, 909 flow [2024-11-13 15:00:12,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 169 transitions, 906 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:00:12,879 INFO L231 Difference]: Finished difference. Result has 131 places, 121 transitions, 611 flow [2024-11-13 15:00:12,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=611, PETRI_PLACES=131, PETRI_TRANSITIONS=121} [2024-11-13 15:00:12,880 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 9 predicate places. [2024-11-13 15:00:12,881 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 121 transitions, 611 flow [2024-11-13 15:00:12,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:12,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:12,881 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:12,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:00:13,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:13,083 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:13,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:13,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2035896848, now seen corresponding path program 1 times [2024-11-13 15:00:13,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:13,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727637461] [2024-11-13 15:00:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:13,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:13,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:13,086 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:13,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:00:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:13,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:00:13,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:13,293 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:00:13,293 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:00:13,294 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:00:13,297 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 [2024-11-13 15:00:13,357 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:00:13,358 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:00:13,360 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:00:13,368 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:00:13,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2024-11-13 15:00:13,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:00:13,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 161 treesize of output 65 [2024-11-13 15:00:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:13,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:13,561 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:13,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727637461] [2024-11-13 15:00:13,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727637461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:13,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:13,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:00:13,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257269760] [2024-11-13 15:00:13,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:13,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:00:13,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:13,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:00:13,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:00:14,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 132 [2024-11-13 15:00:14,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 121 transitions, 611 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) [2024-11-13 15:00:14,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:14,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 132 [2024-11-13 15:00:14,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:17,118 INFO L124 PetriNetUnfolderBase]: 2119/4029 cut-off events. [2024-11-13 15:00:17,118 INFO L125 PetriNetUnfolderBase]: For 6442/6764 co-relation queries the response was YES. [2024-11-13 15:00:17,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11105 conditions, 4029 events. 2119/4029 cut-off events. For 6442/6764 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 27039 event pairs, 627 based on Foata normal form. 35/3938 useless extension candidates. Maximal degree in co-relation 10231. Up to 1772 conditions per place. [2024-11-13 15:00:17,136 INFO L140 encePairwiseOnDemand]: 106/132 looper letters, 109 selfloop transitions, 43 changer transitions 0/192 dead transitions. [2024-11-13 15:00:17,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 192 transitions, 1210 flow [2024-11-13 15:00:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 533 transitions. [2024-11-13 15:00:17,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5768398268398268 [2024-11-13 15:00:17,139 INFO L175 Difference]: Start difference. First operand has 131 places, 121 transitions, 611 flow. Second operand 7 states and 533 transitions. [2024-11-13 15:00:17,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 192 transitions, 1210 flow [2024-11-13 15:00:17,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 192 transitions, 1181 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-13 15:00:17,159 INFO L231 Difference]: Finished difference. Result has 137 places, 142 transitions, 874 flow [2024-11-13 15:00:17,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=874, PETRI_PLACES=137, PETRI_TRANSITIONS=142} [2024-11-13 15:00:17,160 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 15 predicate places. [2024-11-13 15:00:17,160 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 142 transitions, 874 flow [2024-11-13 15:00:17,161 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) [2024-11-13 15:00:17,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:17,161 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:17,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:00:17,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:17,362 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:17,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:17,362 INFO L85 PathProgramCache]: Analyzing trace with hash 770461460, now seen corresponding path program 1 times [2024-11-13 15:00:17,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:17,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850050347] [2024-11-13 15:00:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:17,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:17,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:17,365 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:17,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:00:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:17,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:00:17,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:17,551 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 [2024-11-13 15:00:17,565 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 [2024-11-13 15:00:17,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:00:17,824 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 [2024-11-13 15:00:17,840 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:00:17,840 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 [2024-11-13 15:00:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:17,867 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:17,867 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:17,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850050347] [2024-11-13 15:00:17,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850050347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:17,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:17,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:00:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638324950] [2024-11-13 15:00:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:17,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:00:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:00:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:00:18,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 132 [2024-11-13 15:00:18,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 142 transitions, 874 flow. Second operand has 6 states, 6 states have (on average 64.66666666666667) internal successors, (388), 6 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:18,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:18,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 132 [2024-11-13 15:00:18,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:20,236 INFO L124 PetriNetUnfolderBase]: 2101/4388 cut-off events. [2024-11-13 15:00:20,236 INFO L125 PetriNetUnfolderBase]: For 11501/11721 co-relation queries the response was YES. [2024-11-13 15:00:20,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15005 conditions, 4388 events. 2101/4388 cut-off events. For 11501/11721 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 33008 event pairs, 393 based on Foata normal form. 71/4380 useless extension candidates. Maximal degree in co-relation 13463. Up to 1741 conditions per place. [2024-11-13 15:00:20,258 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 140 selfloop transitions, 24 changer transitions 0/215 dead transitions. [2024-11-13 15:00:20,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 215 transitions, 1535 flow [2024-11-13 15:00:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:00:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 15:00:20,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 688 transitions. [2024-11-13 15:00:20,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5791245791245792 [2024-11-13 15:00:20,262 INFO L175 Difference]: Start difference. First operand has 137 places, 142 transitions, 874 flow. Second operand 9 states and 688 transitions. [2024-11-13 15:00:20,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 215 transitions, 1535 flow [2024-11-13 15:00:20,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 215 transitions, 1510 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-13 15:00:20,302 INFO L231 Difference]: Finished difference. Result has 141 places, 140 transitions, 897 flow [2024-11-13 15:00:20,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=897, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2024-11-13 15:00:20,305 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 19 predicate places. [2024-11-13 15:00:20,306 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 897 flow [2024-11-13 15:00:20,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.66666666666667) internal successors, (388), 6 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:20,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:20,306 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:20,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:00:20,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:20,507 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)] === [2024-11-13 15:00:20,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:20,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1668888014, now seen corresponding path program 1 times [2024-11-13 15:00:20,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:20,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691427836] [2024-11-13 15:00:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:20,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:20,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:20,510 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:20,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:00:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:20,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:00:20,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:20,683 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 [2024-11-13 15:00:20,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:00:20,978 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 [2024-11-13 15:00:20,992 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:00:20,992 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 [2024-11-13 15:00:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:21,018 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:21,018 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:21,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691427836] [2024-11-13 15:00:21,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691427836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:21,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:21,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:00:21,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599206082] [2024-11-13 15:00:21,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:21,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:00:21,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:21,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:00:21,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:00:22,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2024-11-13 15:00:22,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 140 transitions, 897 flow. Second operand has 7 states, 7 states have (on average 62.57142857142857) internal successors, (438), 7 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:22,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:22,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2024-11-13 15:00:22,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:23,578 INFO L124 PetriNetUnfolderBase]: 2402/4926 cut-off events. [2024-11-13 15:00:23,578 INFO L125 PetriNetUnfolderBase]: For 15002/15361 co-relation queries the response was YES. [2024-11-13 15:00:23,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16965 conditions, 4926 events. 2402/4926 cut-off events. For 15002/15361 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 37870 event pairs, 683 based on Foata normal form. 92/4941 useless extension candidates. Maximal degree in co-relation 13932. Up to 1756 conditions per place. [2024-11-13 15:00:23,603 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 147 selfloop transitions, 24 changer transitions 0/218 dead transitions. [2024-11-13 15:00:23,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 218 transitions, 1602 flow [2024-11-13 15:00:23,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:00:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 15:00:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 677 transitions. [2024-11-13 15:00:23,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5698653198653199 [2024-11-13 15:00:23,608 INFO L175 Difference]: Start difference. First operand has 141 places, 140 transitions, 897 flow. Second operand 9 states and 677 transitions. [2024-11-13 15:00:23,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 218 transitions, 1602 flow [2024-11-13 15:00:23,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 218 transitions, 1544 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-13 15:00:23,650 INFO L231 Difference]: Finished difference. Result has 139 places, 138 transitions, 895 flow [2024-11-13 15:00:23,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=895, PETRI_PLACES=139, PETRI_TRANSITIONS=138} [2024-11-13 15:00:23,651 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 17 predicate places. [2024-11-13 15:00:23,651 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 138 transitions, 895 flow [2024-11-13 15:00:23,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.57142857142857) internal successors, (438), 7 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:23,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:23,652 INFO L204 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] [2024-11-13 15:00:23,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:00:23,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:23,853 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:23,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:23,853 INFO L85 PathProgramCache]: Analyzing trace with hash -142753304, now seen corresponding path program 1 times [2024-11-13 15:00:23,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:23,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710950082] [2024-11-13 15:00:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:23,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:23,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:23,856 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:23,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:00:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:24,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:00:24,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:24,228 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_79| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_79|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_79| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-13 15:00:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:24,241 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:24,241 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:24,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710950082] [2024-11-13 15:00:24,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710950082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:24,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:24,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:00:24,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441029527] [2024-11-13 15:00:24,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:24,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:00:24,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:24,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:00:24,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-13 15:00:24,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 132 [2024-11-13 15:00:24,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 138 transitions, 895 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) [2024-11-13 15:00:24,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:24,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 132 [2024-11-13 15:00:24,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:25,899 INFO L124 PetriNetUnfolderBase]: 3532/6552 cut-off events. [2024-11-13 15:00:25,899 INFO L125 PetriNetUnfolderBase]: For 19912/19916 co-relation queries the response was YES. [2024-11-13 15:00:25,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23571 conditions, 6552 events. 3532/6552 cut-off events. For 19912/19916 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 48385 event pairs, 1480 based on Foata normal form. 1/6538 useless extension candidates. Maximal degree in co-relation 19098. Up to 2798 conditions per place. [2024-11-13 15:00:25,936 INFO L140 encePairwiseOnDemand]: 106/132 looper letters, 128 selfloop transitions, 34 changer transitions 4/188 dead transitions. [2024-11-13 15:00:25,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 188 transitions, 1492 flow [2024-11-13 15:00:25,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:00:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:00:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-11-13 15:00:25,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-11-13 15:00:25,938 INFO L175 Difference]: Start difference. First operand has 139 places, 138 transitions, 895 flow. Second operand 5 states and 310 transitions. [2024-11-13 15:00:25,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 188 transitions, 1492 flow [2024-11-13 15:00:25,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 188 transitions, 1455 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 15:00:25,996 INFO L231 Difference]: Finished difference. Result has 140 places, 156 transitions, 1138 flow [2024-11-13 15:00:25,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1138, PETRI_PLACES=140, PETRI_TRANSITIONS=156} [2024-11-13 15:00:25,997 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 18 predicate places. [2024-11-13 15:00:25,997 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 156 transitions, 1138 flow [2024-11-13 15:00:25,997 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) [2024-11-13 15:00:25,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:25,998 INFO L204 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] [2024-11-13 15:00:26,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:00:26,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:26,198 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:26,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:26,199 INFO L85 PathProgramCache]: Analyzing trace with hash -829012704, now seen corresponding path program 1 times [2024-11-13 15:00:26,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:26,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164760045] [2024-11-13 15:00:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:26,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:26,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:26,201 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:26,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:00:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:26,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:00:26,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:26,413 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 [2024-11-13 15:00:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:26,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:26,429 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:26,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164760045] [2024-11-13 15:00:26,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164760045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:26,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:26,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:00:26,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132128130] [2024-11-13 15:00:26,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:26,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:00:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:26,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:00:26,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:26,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 132 [2024-11-13 15:00:26,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 156 transitions, 1138 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) [2024-11-13 15:00:26,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:26,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 132 [2024-11-13 15:00:26,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:27,373 INFO L124 PetriNetUnfolderBase]: 2464/4880 cut-off events. [2024-11-13 15:00:27,373 INFO L125 PetriNetUnfolderBase]: For 19833/20222 co-relation queries the response was YES. [2024-11-13 15:00:27,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20273 conditions, 4880 events. 2464/4880 cut-off events. For 19833/20222 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 36739 event pairs, 1336 based on Foata normal form. 99/4828 useless extension candidates. Maximal degree in co-relation 16518. Up to 3370 conditions per place. [2024-11-13 15:00:27,402 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 88 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-11-13 15:00:27,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 162 transitions, 1364 flow [2024-11-13 15:00:27,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:00:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:00:27,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2024-11-13 15:00:27,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2024-11-13 15:00:27,404 INFO L175 Difference]: Start difference. First operand has 140 places, 156 transitions, 1138 flow. Second operand 3 states and 257 transitions. [2024-11-13 15:00:27,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 162 transitions, 1364 flow [2024-11-13 15:00:27,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 162 transitions, 1282 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-13 15:00:27,451 INFO L231 Difference]: Finished difference. Result has 136 places, 154 transitions, 1062 flow [2024-11-13 15:00:27,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1062, PETRI_PLACES=136, PETRI_TRANSITIONS=154} [2024-11-13 15:00:27,451 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 14 predicate places. [2024-11-13 15:00:27,451 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 154 transitions, 1062 flow [2024-11-13 15:00:27,452 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) [2024-11-13 15:00:27,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:27,452 INFO L204 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] [2024-11-13 15:00:27,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:00:27,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:27,653 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:27,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:27,653 INFO L85 PathProgramCache]: Analyzing trace with hash -56170467, now seen corresponding path program 1 times [2024-11-13 15:00:27,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:27,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889525772] [2024-11-13 15:00:27,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:27,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:27,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:27,655 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:27,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:00:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:27,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:00:27,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:27,875 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 [2024-11-13 15:00:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:27,887 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:27,888 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:27,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889525772] [2024-11-13 15:00:27,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889525772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:27,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:27,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:00:27,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74158450] [2024-11-13 15:00:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:27,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:00:27,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:00:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:00:28,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 132 [2024-11-13 15:00:28,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 154 transitions, 1062 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) [2024-11-13 15:00:28,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:28,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 132 [2024-11-13 15:00:28,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:28,816 INFO L124 PetriNetUnfolderBase]: 2464/4872 cut-off events. [2024-11-13 15:00:28,816 INFO L125 PetriNetUnfolderBase]: For 18161/18550 co-relation queries the response was YES. [2024-11-13 15:00:28,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19879 conditions, 4872 events. 2464/4872 cut-off events. For 18161/18550 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 36556 event pairs, 1336 based on Foata normal form. 99/4820 useless extension candidates. Maximal degree in co-relation 19250. Up to 3370 conditions per place. [2024-11-13 15:00:28,913 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 88 selfloop transitions, 5 changer transitions 0/160 dead transitions. [2024-11-13 15:00:28,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 160 transitions, 1288 flow [2024-11-13 15:00:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:00:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:00:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2024-11-13 15:00:28,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2024-11-13 15:00:28,915 INFO L175 Difference]: Start difference. First operand has 136 places, 154 transitions, 1062 flow. Second operand 3 states and 257 transitions. [2024-11-13 15:00:28,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 160 transitions, 1288 flow [2024-11-13 15:00:28,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 160 transitions, 1278 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:00:28,945 INFO L231 Difference]: Finished difference. Result has 134 places, 152 transitions, 1058 flow [2024-11-13 15:00:28,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1058, PETRI_PLACES=134, PETRI_TRANSITIONS=152} [2024-11-13 15:00:28,946 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 12 predicate places. [2024-11-13 15:00:28,946 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 152 transitions, 1058 flow [2024-11-13 15:00:28,946 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) [2024-11-13 15:00:28,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:28,947 INFO L204 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] [2024-11-13 15:00:28,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 15:00:29,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:29,147 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:29,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1485168753, now seen corresponding path program 1 times [2024-11-13 15:00:29,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:29,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65048688] [2024-11-13 15:00:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:29,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:29,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:29,150 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:29,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:00:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:29,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:00:29,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:29,348 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:29,348 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:29,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65048688] [2024-11-13 15:00:29,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65048688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:29,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:29,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:29,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028528903] [2024-11-13 15:00:29,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:29,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:00:29,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:29,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:00:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:29,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2024-11-13 15:00:29,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 152 transitions, 1058 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) [2024-11-13 15:00:29,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:29,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2024-11-13 15:00:29,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:29,741 INFO L124 PetriNetUnfolderBase]: 266/537 cut-off events. [2024-11-13 15:00:29,741 INFO L125 PetriNetUnfolderBase]: For 1849/1902 co-relation queries the response was YES. [2024-11-13 15:00:29,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2186 conditions, 537 events. 266/537 cut-off events. For 1849/1902 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2133 event pairs, 50 based on Foata normal form. 50/567 useless extension candidates. Maximal degree in co-relation 2161. Up to 269 conditions per place. [2024-11-13 15:00:29,744 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 60 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2024-11-13 15:00:29,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 100 transitions, 703 flow [2024-11-13 15:00:29,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:00:29,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:00:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2024-11-13 15:00:29,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2024-11-13 15:00:29,746 INFO L175 Difference]: Start difference. First operand has 134 places, 152 transitions, 1058 flow. Second operand 4 states and 335 transitions. [2024-11-13 15:00:29,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 100 transitions, 703 flow [2024-11-13 15:00:29,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 525 flow, removed 19 selfloop flow, removed 27 redundant places. [2024-11-13 15:00:29,755 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 319 flow [2024-11-13 15:00:29,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=301, 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=319, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2024-11-13 15:00:29,756 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -30 predicate places. [2024-11-13 15:00:29,756 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 319 flow [2024-11-13 15:00:29,757 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) [2024-11-13 15:00:29,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:29,757 INFO L204 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] [2024-11-13 15:00:29,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 15:00:29,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:29,958 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:29,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:29,958 INFO L85 PathProgramCache]: Analyzing trace with hash -569900508, now seen corresponding path program 1 times [2024-11-13 15:00:29,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:29,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710681565] [2024-11-13 15:00:29,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:29,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:29,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:29,962 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:29,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:00:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:30,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:00:30,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:30,196 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 [2024-11-13 15:00:30,343 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 [2024-11-13 15:00:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:30,482 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:30,482 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:30,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710681565] [2024-11-13 15:00:30,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710681565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:30,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:30,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:00:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66267696] [2024-11-13 15:00:30,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:30,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:00:30,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:30,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:00:30,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:00:32,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:00:32,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 319 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:32,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:32,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:00:32,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:33,072 INFO L124 PetriNetUnfolderBase]: 302/623 cut-off events. [2024-11-13 15:00:33,072 INFO L125 PetriNetUnfolderBase]: For 1371/1377 co-relation queries the response was YES. [2024-11-13 15:00:33,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 623 events. 302/623 cut-off events. For 1371/1377 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2703 event pairs, 25 based on Foata normal form. 10/623 useless extension candidates. Maximal degree in co-relation 2034. Up to 286 conditions per place. [2024-11-13 15:00:33,076 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 69 selfloop transitions, 30 changer transitions 0/130 dead transitions. [2024-11-13 15:00:33,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 130 transitions, 784 flow [2024-11-13 15:00:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:00:33,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:00:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 726 transitions. [2024-11-13 15:00:33,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-13 15:00:33,080 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 319 flow. Second operand 10 states and 726 transitions. [2024-11-13 15:00:33,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 130 transitions, 784 flow [2024-11-13 15:00:33,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 130 transitions, 742 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:00:33,087 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 534 flow [2024-11-13 15:00:33,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=534, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2024-11-13 15:00:33,091 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -18 predicate places. [2024-11-13 15:00:33,091 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 534 flow [2024-11-13 15:00:33,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:33,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:33,091 INFO L204 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] [2024-11-13 15:00:33,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:00:33,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:33,292 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:33,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash -15569184, now seen corresponding path program 2 times [2024-11-13 15:00:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:33,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565604733] [2024-11-13 15:00:33,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:00:33,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:33,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:33,295 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:33,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:00:33,532 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:00:33,532 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:00:33,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:00:33,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:33,549 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 [2024-11-13 15:00:33,762 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 [2024-11-13 15:00:33,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:00:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:33,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:33,871 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:33,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565604733] [2024-11-13 15:00:33,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565604733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:33,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:33,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:00:33,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105998840] [2024-11-13 15:00:33,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:33,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:00:33,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:33,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:00:33,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:00:35,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:00:35,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 534 flow. Second operand has 8 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:35,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:35,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:00:35,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:36,387 INFO L124 PetriNetUnfolderBase]: 330/676 cut-off events. [2024-11-13 15:00:36,387 INFO L125 PetriNetUnfolderBase]: For 1862/1874 co-relation queries the response was YES. [2024-11-13 15:00:36,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 676 events. 330/676 cut-off events. For 1862/1874 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3010 event pairs, 15 based on Foata normal form. 17/684 useless extension candidates. Maximal degree in co-relation 2539. Up to 203 conditions per place. [2024-11-13 15:00:36,390 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 82 selfloop transitions, 51 changer transitions 0/164 dead transitions. [2024-11-13 15:00:36,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 164 transitions, 1206 flow [2024-11-13 15:00:36,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:00:36,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:00:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 870 transitions. [2024-11-13 15:00:36,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5492424242424242 [2024-11-13 15:00:36,395 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 534 flow. Second operand 12 states and 870 transitions. [2024-11-13 15:00:36,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 164 transitions, 1206 flow [2024-11-13 15:00:36,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 164 transitions, 1164 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-13 15:00:36,406 INFO L231 Difference]: Finished difference. Result has 116 places, 126 transitions, 823 flow [2024-11-13 15:00:36,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=823, PETRI_PLACES=116, PETRI_TRANSITIONS=126} [2024-11-13 15:00:36,407 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -6 predicate places. [2024-11-13 15:00:36,407 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 126 transitions, 823 flow [2024-11-13 15:00:36,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:36,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:36,408 INFO L204 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] [2024-11-13 15:00:36,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 15:00:36,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:36,608 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)] === [2024-11-13 15:00:36,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1074930870, now seen corresponding path program 3 times [2024-11-13 15:00:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:36,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355623531] [2024-11-13 15:00:36,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:00:36,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:36,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:36,611 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:36,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:00:36,887 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 15:00:36,887 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:00:36,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:00:36,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:37,039 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 15:00:37,040 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 [2024-11-13 15:00:37,085 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 [2024-11-13 15:00:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:37,089 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:37,089 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:37,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355623531] [2024-11-13 15:00:37,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355623531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:37,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:37,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:37,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132856437] [2024-11-13 15:00:37,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:37,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:00:37,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:37,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:00:37,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:37,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 132 [2024-11-13 15:00:37,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 126 transitions, 823 flow. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:37,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:37,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 132 [2024-11-13 15:00:37,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:37,919 INFO L124 PetriNetUnfolderBase]: 332/668 cut-off events. [2024-11-13 15:00:37,919 INFO L125 PetriNetUnfolderBase]: For 2294/2334 co-relation queries the response was YES. [2024-11-13 15:00:37,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2929 conditions, 668 events. 332/668 cut-off events. For 2294/2334 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2934 event pairs, 113 based on Foata normal form. 5/651 useless extension candidates. Maximal degree in co-relation 2906. Up to 252 conditions per place. [2024-11-13 15:00:37,924 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 74 selfloop transitions, 35 changer transitions 0/135 dead transitions. [2024-11-13 15:00:37,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 135 transitions, 1103 flow [2024-11-13 15:00:37,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:00:37,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:00:37,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 353 transitions. [2024-11-13 15:00:37,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5348484848484848 [2024-11-13 15:00:37,927 INFO L175 Difference]: Start difference. First operand has 116 places, 126 transitions, 823 flow. Second operand 5 states and 353 transitions. [2024-11-13 15:00:37,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 135 transitions, 1103 flow [2024-11-13 15:00:37,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 135 transitions, 1005 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-11-13 15:00:37,937 INFO L231 Difference]: Finished difference. Result has 113 places, 125 transitions, 793 flow [2024-11-13 15:00:37,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=793, PETRI_PLACES=113, PETRI_TRANSITIONS=125} [2024-11-13 15:00:37,938 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -9 predicate places. [2024-11-13 15:00:37,938 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 125 transitions, 793 flow [2024-11-13 15:00:37,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:37,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:37,938 INFO L204 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] [2024-11-13 15:00:37,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:00:38,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:38,139 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:38,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:38,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1986501881, now seen corresponding path program 1 times [2024-11-13 15:00:38,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:38,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201880342] [2024-11-13 15:00:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:38,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:38,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:38,142 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:38,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:00:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:38,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:00:38,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:38,440 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 [2024-11-13 15:00:38,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:00:38,821 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 [2024-11-13 15:00:38,833 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:00:38,834 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 [2024-11-13 15:00:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:38,874 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:38,874 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:38,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201880342] [2024-11-13 15:00:38,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201880342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:38,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:38,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:38,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843741807] [2024-11-13 15:00:38,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:38,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:00:38,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:38,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:00:38,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:00:39,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 132 [2024-11-13 15:00:39,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 125 transitions, 793 flow. Second operand has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:39,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:39,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 132 [2024-11-13 15:00:39,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:39,584 INFO L124 PetriNetUnfolderBase]: 332/662 cut-off events. [2024-11-13 15:00:39,584 INFO L125 PetriNetUnfolderBase]: For 2163/2196 co-relation queries the response was YES. [2024-11-13 15:00:39,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2871 conditions, 662 events. 332/662 cut-off events. For 2163/2196 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2882 event pairs, 129 based on Foata normal form. 9/648 useless extension candidates. Maximal degree in co-relation 2847. Up to 324 conditions per place. [2024-11-13 15:00:39,590 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 76 selfloop transitions, 27 changer transitions 0/123 dead transitions. [2024-11-13 15:00:39,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 123 transitions, 1011 flow [2024-11-13 15:00:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:00:39,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:00:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 328 transitions. [2024-11-13 15:00:39,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695 [2024-11-13 15:00:39,592 INFO L175 Difference]: Start difference. First operand has 113 places, 125 transitions, 793 flow. Second operand 5 states and 328 transitions. [2024-11-13 15:00:39,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 123 transitions, 1011 flow [2024-11-13 15:00:39,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 123 transitions, 941 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:00:39,603 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 765 flow [2024-11-13 15:00:39,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=765, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2024-11-13 15:00:39,606 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -15 predicate places. [2024-11-13 15:00:39,606 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 765 flow [2024-11-13 15:00:39,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:39,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:39,607 INFO L204 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] [2024-11-13 15:00:39,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 15:00:39,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:39,808 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:00:39,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:39,808 INFO L85 PathProgramCache]: Analyzing trace with hash 48430346, now seen corresponding path program 1 times [2024-11-13 15:00:39,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:39,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823262401] [2024-11-13 15:00:39,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:39,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:39,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:39,810 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:39,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:00:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:40,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 15:00:40,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:40,075 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 [2024-11-13 15:00:40,459 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:40,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:00:40,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:00:40,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:00:40,467 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:00:40,467 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:00:40,468 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 [2024-11-13 15:00:40,566 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:00:40,567 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 68 treesize of output 55 [2024-11-13 15:00:41,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:00:41,297 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 103 treesize of output 51 [2024-11-13 15:00:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:41,324 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:41,324 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:41,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823262401] [2024-11-13 15:00:41,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823262401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:41,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:41,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:00:41,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829092416] [2024-11-13 15:00:41,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:41,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:00:41,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:00:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:00:43,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 132 [2024-11-13 15:00:43,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 765 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:43,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:43,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 132 [2024-11-13 15:00:43,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:46,348 INFO L124 PetriNetUnfolderBase]: 489/972 cut-off events. [2024-11-13 15:00:46,348 INFO L125 PetriNetUnfolderBase]: For 2892/2892 co-relation queries the response was YES. [2024-11-13 15:00:46,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4033 conditions, 972 events. 489/972 cut-off events. For 2892/2892 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4694 event pairs, 25 based on Foata normal form. 0/969 useless extension candidates. Maximal degree in co-relation 4009. Up to 284 conditions per place. [2024-11-13 15:00:46,352 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 130 selfloop transitions, 66 changer transitions 0/207 dead transitions. [2024-11-13 15:00:46,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 207 transitions, 1734 flow [2024-11-13 15:00:46,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:00:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 15:00:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 788 transitions. [2024-11-13 15:00:46,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4592074592074592 [2024-11-13 15:00:46,355 INFO L175 Difference]: Start difference. First operand has 107 places, 119 transitions, 765 flow. Second operand 13 states and 788 transitions. [2024-11-13 15:00:46,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 207 transitions, 1734 flow [2024-11-13 15:00:46,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 207 transitions, 1668 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:00:46,370 INFO L231 Difference]: Finished difference. Result has 119 places, 139 transitions, 1051 flow [2024-11-13 15:00:46,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1051, PETRI_PLACES=119, PETRI_TRANSITIONS=139} [2024-11-13 15:00:46,372 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -3 predicate places. [2024-11-13 15:00:46,372 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 139 transitions, 1051 flow [2024-11-13 15:00:46,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:46,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:46,373 INFO L204 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] [2024-11-13 15:00:46,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 15:00:46,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:46,573 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)] === [2024-11-13 15:00:46,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:46,573 INFO L85 PathProgramCache]: Analyzing trace with hash 629436100, now seen corresponding path program 2 times [2024-11-13 15:00:46,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:46,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343385344] [2024-11-13 15:00:46,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:00:46,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:46,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:46,576 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:46,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:00:46,821 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:00:46,821 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:00:46,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:00:46,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:47,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:00:47,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:00:47,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:00:47,139 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:00:47,140 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:00:47,141 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 [2024-11-13 15:00:47,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:00:47,234 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 68 treesize of output 55 [2024-11-13 15:00:48,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:00:48,060 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 103 treesize of output 51 [2024-11-13 15:00:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:48,091 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:48,091 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:48,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343385344] [2024-11-13 15:00:48,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343385344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:48,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:48,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:00:48,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703550284] [2024-11-13 15:00:48,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:48,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:00:48,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:00:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:00:50,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2024-11-13 15:00:50,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 139 transitions, 1051 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) [2024-11-13 15:00:50,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:50,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2024-11-13 15:00:50,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:52,083 INFO L124 PetriNetUnfolderBase]: 504/1025 cut-off events. [2024-11-13 15:00:52,083 INFO L125 PetriNetUnfolderBase]: For 4406/4406 co-relation queries the response was YES. [2024-11-13 15:00:52,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4685 conditions, 1025 events. 504/1025 cut-off events. For 4406/4406 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5076 event pairs, 31 based on Foata normal form. 1/1023 useless extension candidates. Maximal degree in co-relation 4657. Up to 304 conditions per place. [2024-11-13 15:00:52,087 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 132 selfloop transitions, 60 changer transitions 0/203 dead transitions. [2024-11-13 15:00:52,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 203 transitions, 1852 flow [2024-11-13 15:00:52,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:00:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:00:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 827 transitions. [2024-11-13 15:00:52,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5220959595959596 [2024-11-13 15:00:52,089 INFO L175 Difference]: Start difference. First operand has 119 places, 139 transitions, 1051 flow. Second operand 12 states and 827 transitions. [2024-11-13 15:00:52,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 203 transitions, 1852 flow [2024-11-13 15:00:52,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 203 transitions, 1792 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-13 15:00:52,101 INFO L231 Difference]: Finished difference. Result has 127 places, 144 transitions, 1191 flow [2024-11-13 15:00:52,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1191, PETRI_PLACES=127, PETRI_TRANSITIONS=144} [2024-11-13 15:00:52,101 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 5 predicate places. [2024-11-13 15:00:52,102 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 144 transitions, 1191 flow [2024-11-13 15:00:52,102 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) [2024-11-13 15:00:52,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:52,102 INFO L204 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] [2024-11-13 15:00:52,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 15:00:52,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:52,302 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)] === [2024-11-13 15:00:52,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:52,303 INFO L85 PathProgramCache]: Analyzing trace with hash -203640762, now seen corresponding path program 3 times [2024-11-13 15:00:52,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:52,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51649359] [2024-11-13 15:00:52,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:00:52,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:52,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:52,305 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:52,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:00:52,562 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 15:00:52,562 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:00:52,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:00:52,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:52,576 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 [2024-11-13 15:00:52,737 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 [2024-11-13 15:00:52,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:52,847 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:52,847 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51649359] [2024-11-13 15:00:52,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51649359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:52,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:52,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:00:52,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192730369] [2024-11-13 15:00:52,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:52,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:00:52,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:52,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:00:52,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:00:54,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:00:54,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 144 transitions, 1191 flow. Second operand has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:54,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:54,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:00:54,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:55,341 INFO L124 PetriNetUnfolderBase]: 755/1495 cut-off events. [2024-11-13 15:00:55,341 INFO L125 PetriNetUnfolderBase]: For 8318/8358 co-relation queries the response was YES. [2024-11-13 15:00:55,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7309 conditions, 1495 events. 755/1495 cut-off events. For 8318/8358 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8304 event pairs, 112 based on Foata normal form. 33/1506 useless extension candidates. Maximal degree in co-relation 7278. Up to 548 conditions per place. [2024-11-13 15:00:55,348 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 124 selfloop transitions, 76 changer transitions 0/232 dead transitions. [2024-11-13 15:00:55,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 232 transitions, 2428 flow [2024-11-13 15:00:55,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:00:55,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 15:00:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 808 transitions. [2024-11-13 15:00:55,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5564738292011019 [2024-11-13 15:00:55,350 INFO L175 Difference]: Start difference. First operand has 127 places, 144 transitions, 1191 flow. Second operand 11 states and 808 transitions. [2024-11-13 15:00:55,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 232 transitions, 2428 flow [2024-11-13 15:00:55,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 232 transitions, 2274 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-11-13 15:00:55,362 INFO L231 Difference]: Finished difference. Result has 136 places, 186 transitions, 1822 flow [2024-11-13 15:00:55,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1822, PETRI_PLACES=136, PETRI_TRANSITIONS=186} [2024-11-13 15:00:55,363 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 14 predicate places. [2024-11-13 15:00:55,363 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 186 transitions, 1822 flow [2024-11-13 15:00:55,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:55,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:55,364 INFO L204 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] [2024-11-13 15:00:55,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 15:00:55,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:55,564 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)] === [2024-11-13 15:00:55,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:55,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1836489020, now seen corresponding path program 4 times [2024-11-13 15:00:55,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:00:55,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042930015] [2024-11-13 15:00:55,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:00:55,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:55,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:55,567 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:55,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:00:55,861 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:00:55,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:00:55,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 15:00:55,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:55,879 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 [2024-11-13 15:00:56,289 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:00:56,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:00:56,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:00:56,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:00:56,302 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:00:56,302 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:00:56,304 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 [2024-11-13 15:00:56,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:00:56,402 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 68 treesize of output 55 [2024-11-13 15:00:57,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:00:57,152 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 103 treesize of output 51 [2024-11-13 15:00:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:57,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:00:57,191 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:00:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042930015] [2024-11-13 15:00:57,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042930015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:57,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:57,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:00:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891527506] [2024-11-13 15:00:57,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:57,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:00:57,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:00:57,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:00:57,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:00:59,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 132 [2024-11-13 15:00:59,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 186 transitions, 1822 flow. Second operand has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:59,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:59,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 132 [2024-11-13 15:00:59,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:01,868 INFO L124 PetriNetUnfolderBase]: 1014/1950 cut-off events. [2024-11-13 15:01:01,868 INFO L125 PetriNetUnfolderBase]: For 11030/11030 co-relation queries the response was YES. [2024-11-13 15:01:01,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10205 conditions, 1950 events. 1014/1950 cut-off events. For 11030/11030 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11239 event pairs, 117 based on Foata normal form. 1/1947 useless extension candidates. Maximal degree in co-relation 10167. Up to 630 conditions per place. [2024-11-13 15:01:01,878 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 160 selfloop transitions, 111 changer transitions 0/282 dead transitions. [2024-11-13 15:01:01,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 282 transitions, 3176 flow [2024-11-13 15:01:01,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:01:01,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 15:01:01,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 786 transitions. [2024-11-13 15:01:01,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.458041958041958 [2024-11-13 15:01:01,880 INFO L175 Difference]: Start difference. First operand has 136 places, 186 transitions, 1822 flow. Second operand 13 states and 786 transitions. [2024-11-13 15:01:01,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 282 transitions, 3176 flow [2024-11-13 15:01:01,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 282 transitions, 3132 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-11-13 15:01:01,907 INFO L231 Difference]: Finished difference. Result has 151 places, 211 transitions, 2424 flow [2024-11-13 15:01:01,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2424, PETRI_PLACES=151, PETRI_TRANSITIONS=211} [2024-11-13 15:01:01,907 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 29 predicate places. [2024-11-13 15:01:01,907 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 211 transitions, 2424 flow [2024-11-13 15:01:01,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.888888888888886) internal successors, (485), 9 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:01,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:01,908 INFO L204 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] [2024-11-13 15:01:01,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:01:02,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:02,108 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)] === [2024-11-13 15:01:02,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:02,109 INFO L85 PathProgramCache]: Analyzing trace with hash 2108771122, now seen corresponding path program 5 times [2024-11-13 15:01:02,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:02,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486536234] [2024-11-13 15:01:02,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:01:02,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:02,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:02,111 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:02,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:01:02,387 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:01:02,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:02,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:01:02,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:02,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:01:02,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:01:02,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:01:02,681 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:01:02,682 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:01:02,683 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 [2024-11-13 15:01:02,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:01:02,760 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 68 treesize of output 55 [2024-11-13 15:01:03,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:01:03,560 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 103 treesize of output 51 [2024-11-13 15:01:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:03,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:03,586 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:03,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486536234] [2024-11-13 15:01:03,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486536234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:03,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:03,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:01:03,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047523981] [2024-11-13 15:01:03,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:03,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:01:03,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:03,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:01:03,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:01:05,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2024-11-13 15:01:05,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 211 transitions, 2424 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) [2024-11-13 15:01:05,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:05,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2024-11-13 15:01:05,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:07,978 INFO L124 PetriNetUnfolderBase]: 1028/2000 cut-off events. [2024-11-13 15:01:07,978 INFO L125 PetriNetUnfolderBase]: For 15921/15921 co-relation queries the response was YES. [2024-11-13 15:01:07,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11542 conditions, 2000 events. 1028/2000 cut-off events. For 15921/15921 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11604 event pairs, 130 based on Foata normal form. 1/1996 useless extension candidates. Maximal degree in co-relation 11498. Up to 647 conditions per place. [2024-11-13 15:01:07,990 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 186 selfloop transitions, 84 changer transitions 0/281 dead transitions. [2024-11-13 15:01:07,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 281 transitions, 3518 flow [2024-11-13 15:01:07,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:01:07,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:01:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 823 transitions. [2024-11-13 15:01:07,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5195707070707071 [2024-11-13 15:01:07,992 INFO L175 Difference]: Start difference. First operand has 151 places, 211 transitions, 2424 flow. Second operand 12 states and 823 transitions. [2024-11-13 15:01:07,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 281 transitions, 3518 flow [2024-11-13 15:01:08,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 281 transitions, 3337 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-11-13 15:01:08,031 INFO L231 Difference]: Finished difference. Result has 157 places, 216 transitions, 2509 flow [2024-11-13 15:01:08,032 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2243, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2509, PETRI_PLACES=157, PETRI_TRANSITIONS=216} [2024-11-13 15:01:08,032 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 35 predicate places. [2024-11-13 15:01:08,032 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 216 transitions, 2509 flow [2024-11-13 15:01:08,033 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) [2024-11-13 15:01:08,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:08,033 INFO L204 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] [2024-11-13 15:01:08,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 15:01:08,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:08,233 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:08,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash -154346064, now seen corresponding path program 6 times [2024-11-13 15:01:08,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:08,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856252548] [2024-11-13 15:01:08,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:01:08,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:08,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:08,236 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:08,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 15:01:08,516 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-13 15:01:08,516 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:08,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:01:08,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:08,532 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 [2024-11-13 15:01:08,792 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 [2024-11-13 15:01:08,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:01:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:08,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:08,858 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:08,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856252548] [2024-11-13 15:01:08,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856252548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:08,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:08,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:01:08,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823615397] [2024-11-13 15:01:08,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:08,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:01:08,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:08,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:01:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:01:10,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:01:10,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 216 transitions, 2509 flow. Second operand has 8 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:10,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:10,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:01:10,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:11,689 INFO L124 PetriNetUnfolderBase]: 1035/2058 cut-off events. [2024-11-13 15:01:11,689 INFO L125 PetriNetUnfolderBase]: For 19625/19691 co-relation queries the response was YES. [2024-11-13 15:01:11,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12030 conditions, 2058 events. 1035/2058 cut-off events. For 19625/19691 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12418 event pairs, 139 based on Foata normal form. 41/2064 useless extension candidates. Maximal degree in co-relation 11984. Up to 688 conditions per place. [2024-11-13 15:01:11,714 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 123 selfloop transitions, 127 changer transitions 0/288 dead transitions. [2024-11-13 15:01:11,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 288 transitions, 3793 flow [2024-11-13 15:01:11,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:01:11,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:01:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 878 transitions. [2024-11-13 15:01:11,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542929292929293 [2024-11-13 15:01:11,717 INFO L175 Difference]: Start difference. First operand has 157 places, 216 transitions, 2509 flow. Second operand 12 states and 878 transitions. [2024-11-13 15:01:11,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 288 transitions, 3793 flow [2024-11-13 15:01:11,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 288 transitions, 3663 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-11-13 15:01:11,789 INFO L231 Difference]: Finished difference. Result has 166 places, 244 transitions, 3227 flow [2024-11-13 15:01:11,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2405, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3227, PETRI_PLACES=166, PETRI_TRANSITIONS=244} [2024-11-13 15:01:11,790 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 44 predicate places. [2024-11-13 15:01:11,790 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 244 transitions, 3227 flow [2024-11-13 15:01:11,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:11,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:11,790 INFO L204 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] [2024-11-13 15:01:11,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 15:01:11,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:11,991 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:11,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:11,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1061512816, now seen corresponding path program 7 times [2024-11-13 15:01:11,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:11,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882007696] [2024-11-13 15:01:11,992 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:01:11,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:11,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:11,993 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:11,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 15:01:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:12,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:01:12,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:12,287 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 [2024-11-13 15:01:12,413 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 [2024-11-13 15:01:12,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:01:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:12,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:12,622 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:12,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882007696] [2024-11-13 15:01:12,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882007696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:12,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:12,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:01:12,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348784325] [2024-11-13 15:01:12,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:12,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:01:12,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:12,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:01:12,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:01:14,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:01:14,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 244 transitions, 3227 flow. Second operand has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:14,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:14,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:01:14,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:15,686 INFO L124 PetriNetUnfolderBase]: 1034/2059 cut-off events. [2024-11-13 15:01:15,686 INFO L125 PetriNetUnfolderBase]: For 22039/22079 co-relation queries the response was YES. [2024-11-13 15:01:15,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13054 conditions, 2059 events. 1034/2059 cut-off events. For 22039/22079 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12376 event pairs, 143 based on Foata normal form. 41/2076 useless extension candidates. Maximal degree in co-relation 13002. Up to 1032 conditions per place. [2024-11-13 15:01:15,702 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 148 selfloop transitions, 86 changer transitions 0/272 dead transitions. [2024-11-13 15:01:15,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 272 transitions, 3948 flow [2024-11-13 15:01:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:01:15,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 15:01:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 791 transitions. [2024-11-13 15:01:15,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5447658402203857 [2024-11-13 15:01:15,704 INFO L175 Difference]: Start difference. First operand has 166 places, 244 transitions, 3227 flow. Second operand 11 states and 791 transitions. [2024-11-13 15:01:15,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 272 transitions, 3948 flow [2024-11-13 15:01:15,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 272 transitions, 3799 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-11-13 15:01:15,791 INFO L231 Difference]: Finished difference. Result has 172 places, 245 transitions, 3273 flow [2024-11-13 15:01:15,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3080, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3273, PETRI_PLACES=172, PETRI_TRANSITIONS=245} [2024-11-13 15:01:15,792 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 50 predicate places. [2024-11-13 15:01:15,792 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 245 transitions, 3273 flow [2024-11-13 15:01:15,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:15,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:15,792 INFO L204 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] [2024-11-13 15:01:15,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 15:01:15,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:15,993 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:15,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:15,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1079247070, now seen corresponding path program 8 times [2024-11-13 15:01:15,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:15,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522946958] [2024-11-13 15:01:15,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:01:15,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:15,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:15,995 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:15,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 15:01:16,288 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:01:16,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:16,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:01:16,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:16,300 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 [2024-11-13 15:01:16,519 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 [2024-11-13 15:01:16,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:01:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:16,574 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:16,574 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:16,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522946958] [2024-11-13 15:01:16,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522946958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:16,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:16,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:01:16,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301424682] [2024-11-13 15:01:16,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:16,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:01:16,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:16,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:01:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:01:17,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:01:17,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 245 transitions, 3273 flow. Second operand has 8 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:17,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:17,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:01:17,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:19,415 INFO L124 PetriNetUnfolderBase]: 1045/2094 cut-off events. [2024-11-13 15:01:19,415 INFO L125 PetriNetUnfolderBase]: For 25198/25256 co-relation queries the response was YES. [2024-11-13 15:01:19,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13327 conditions, 2094 events. 1045/2094 cut-off events. For 25198/25256 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12775 event pairs, 183 based on Foata normal form. 45/2108 useless extension candidates. Maximal degree in co-relation 13274. Up to 692 conditions per place. [2024-11-13 15:01:19,432 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 145 selfloop transitions, 133 changer transitions 0/316 dead transitions. [2024-11-13 15:01:19,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 316 transitions, 4590 flow [2024-11-13 15:01:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:01:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:01:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 890 transitions. [2024-11-13 15:01:19,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5618686868686869 [2024-11-13 15:01:19,434 INFO L175 Difference]: Start difference. First operand has 172 places, 245 transitions, 3273 flow. Second operand 12 states and 890 transitions. [2024-11-13 15:01:19,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 316 transitions, 4590 flow [2024-11-13 15:01:19,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 316 transitions, 4435 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-13 15:01:19,529 INFO L231 Difference]: Finished difference. Result has 182 places, 261 transitions, 3805 flow [2024-11-13 15:01:19,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3805, PETRI_PLACES=182, PETRI_TRANSITIONS=261} [2024-11-13 15:01:19,530 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 60 predicate places. [2024-11-13 15:01:19,530 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 261 transitions, 3805 flow [2024-11-13 15:01:19,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:19,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:19,531 INFO L204 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] [2024-11-13 15:01:19,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 15:01:19,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:19,731 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:19,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:19,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1393693090, now seen corresponding path program 9 times [2024-11-13 15:01:19,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:19,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162193779] [2024-11-13 15:01:19,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:01:19,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:19,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:19,734 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:19,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 15:01:20,030 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 15:01:20,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:20,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:01:20,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:20,042 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 [2024-11-13 15:01:20,180 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 [2024-11-13 15:01:20,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:01:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:20,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:20,308 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:20,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162193779] [2024-11-13 15:01:20,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162193779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:20,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:20,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:01:20,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382936544] [2024-11-13 15:01:20,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:20,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:01:20,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:20,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:01:20,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:01:21,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 132 [2024-11-13 15:01:21,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 261 transitions, 3805 flow. Second operand has 9 states, 9 states have (on average 70.33333333333333) internal successors, (633), 9 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:21,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:21,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 132 [2024-11-13 15:01:21,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:22,828 INFO L124 PetriNetUnfolderBase]: 1051/2102 cut-off events. [2024-11-13 15:01:22,829 INFO L125 PetriNetUnfolderBase]: For 29311/29357 co-relation queries the response was YES. [2024-11-13 15:01:22,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14247 conditions, 2102 events. 1051/2102 cut-off events. For 29311/29357 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12803 event pairs, 157 based on Foata normal form. 42/2114 useless extension candidates. Maximal degree in co-relation 14187. Up to 1054 conditions per place. [2024-11-13 15:01:22,846 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 163 selfloop transitions, 90 changer transitions 0/291 dead transitions. [2024-11-13 15:01:22,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 291 transitions, 4612 flow [2024-11-13 15:01:22,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:01:22,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:01:22,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 755 transitions. [2024-11-13 15:01:22,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.571969696969697 [2024-11-13 15:01:22,848 INFO L175 Difference]: Start difference. First operand has 182 places, 261 transitions, 3805 flow. Second operand 10 states and 755 transitions. [2024-11-13 15:01:22,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 291 transitions, 4612 flow [2024-11-13 15:01:22,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 291 transitions, 4342 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-11-13 15:01:22,960 INFO L231 Difference]: Finished difference. Result has 188 places, 264 transitions, 3785 flow [2024-11-13 15:01:22,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3545, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3785, PETRI_PLACES=188, PETRI_TRANSITIONS=264} [2024-11-13 15:01:22,961 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 66 predicate places. [2024-11-13 15:01:22,961 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 264 transitions, 3785 flow [2024-11-13 15:01:22,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.33333333333333) internal successors, (633), 9 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:22,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:22,961 INFO L204 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] [2024-11-13 15:01:22,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 15:01:23,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:23,162 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:23,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:23,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1460731666, now seen corresponding path program 10 times [2024-11-13 15:01:23,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:23,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246531178] [2024-11-13 15:01:23,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:01:23,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:23,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:23,166 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:23,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 15:01:23,554 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:01:23,554 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:23,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:01:23,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:23,572 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 [2024-11-13 15:01:23,857 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 [2024-11-13 15:01:23,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:01:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:23,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:23,925 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246531178] [2024-11-13 15:01:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246531178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:23,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:23,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:01:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771052664] [2024-11-13 15:01:23,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:23,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:01:23,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:23,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:01:23,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:01:25,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:01:25,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 264 transitions, 3785 flow. Second operand has 8 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:25,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:25,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:01:25,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:26,502 INFO L124 PetriNetUnfolderBase]: 826/1737 cut-off events. [2024-11-13 15:01:26,502 INFO L125 PetriNetUnfolderBase]: For 24886/24928 co-relation queries the response was YES. [2024-11-13 15:01:26,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11155 conditions, 1737 events. 826/1737 cut-off events. For 24886/24928 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 10322 event pairs, 121 based on Foata normal form. 30/1737 useless extension candidates. Maximal degree in co-relation 11094. Up to 814 conditions per place. [2024-11-13 15:01:26,514 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 157 selfloop transitions, 96 changer transitions 0/291 dead transitions. [2024-11-13 15:01:26,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 291 transitions, 4388 flow [2024-11-13 15:01:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:01:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 15:01:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 808 transitions. [2024-11-13 15:01:26,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5564738292011019 [2024-11-13 15:01:26,516 INFO L175 Difference]: Start difference. First operand has 188 places, 264 transitions, 3785 flow. Second operand 11 states and 808 transitions. [2024-11-13 15:01:26,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 291 transitions, 4388 flow [2024-11-13 15:01:26,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 291 transitions, 4244 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-11-13 15:01:26,608 INFO L231 Difference]: Finished difference. Result has 198 places, 262 transitions, 3843 flow [2024-11-13 15:01:26,608 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3405, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3843, PETRI_PLACES=198, PETRI_TRANSITIONS=262} [2024-11-13 15:01:26,609 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 76 predicate places. [2024-11-13 15:01:26,609 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 262 transitions, 3843 flow [2024-11-13 15:01:26,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:26,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:26,609 INFO L204 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] [2024-11-13 15:01:26,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-13 15:01:26,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:26,810 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:26,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:26,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1642470152, now seen corresponding path program 11 times [2024-11-13 15:01:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:26,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570853379] [2024-11-13 15:01:26,811 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:01:26,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:26,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:26,815 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:26,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 15:01:27,110 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:01:27,110 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:27,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:01:27,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:27,124 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 [2024-11-13 15:01:27,289 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 [2024-11-13 15:01:27,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:01:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:27,410 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:27,410 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:27,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570853379] [2024-11-13 15:01:27,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570853379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:27,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:27,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:01:27,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39039307] [2024-11-13 15:01:27,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:27,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:01:27,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:27,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:01:27,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:01:28,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:01:28,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 262 transitions, 3843 flow. Second operand has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:28,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:28,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:01:28,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:29,880 INFO L124 PetriNetUnfolderBase]: 826/1743 cut-off events. [2024-11-13 15:01:29,880 INFO L125 PetriNetUnfolderBase]: For 24863/24903 co-relation queries the response was YES. [2024-11-13 15:01:29,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11495 conditions, 1743 events. 826/1743 cut-off events. For 24863/24903 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 10415 event pairs, 130 based on Foata normal form. 18/1730 useless extension candidates. Maximal degree in co-relation 11427. Up to 813 conditions per place. [2024-11-13 15:01:29,894 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 156 selfloop transitions, 95 changer transitions 0/289 dead transitions. [2024-11-13 15:01:29,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 289 transitions, 4561 flow [2024-11-13 15:01:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:01:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:01:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 867 transitions. [2024-11-13 15:01:29,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5473484848484849 [2024-11-13 15:01:29,896 INFO L175 Difference]: Start difference. First operand has 198 places, 262 transitions, 3843 flow. Second operand 12 states and 867 transitions. [2024-11-13 15:01:29,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 289 transitions, 4561 flow [2024-11-13 15:01:29,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 289 transitions, 4418 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-11-13 15:01:29,986 INFO L231 Difference]: Finished difference. Result has 206 places, 263 transitions, 3915 flow [2024-11-13 15:01:29,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3700, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3915, PETRI_PLACES=206, PETRI_TRANSITIONS=263} [2024-11-13 15:01:29,987 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 84 predicate places. [2024-11-13 15:01:29,988 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 263 transitions, 3915 flow [2024-11-13 15:01:29,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:29,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:29,988 INFO L204 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] [2024-11-13 15:01:30,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 15:01:30,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:30,189 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:30,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:30,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1049229540, now seen corresponding path program 12 times [2024-11-13 15:01:30,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:30,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92431341] [2024-11-13 15:01:30,189 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:01:30,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:30,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:30,191 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:30,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 15:01:30,496 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-13 15:01:30,496 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:30,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:01:30,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:30,510 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 [2024-11-13 15:01:30,704 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 [2024-11-13 15:01:30,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:01:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:30,804 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:30,804 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:30,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92431341] [2024-11-13 15:01:30,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92431341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:30,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:30,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:01:30,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605919894] [2024-11-13 15:01:30,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:30,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:01:30,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:30,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:01:30,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:01:32,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:01:32,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 263 transitions, 3915 flow. Second operand has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:32,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:32,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:01:32,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:33,446 INFO L124 PetriNetUnfolderBase]: 861/1850 cut-off events. [2024-11-13 15:01:33,446 INFO L125 PetriNetUnfolderBase]: For 26857/26897 co-relation queries the response was YES. [2024-11-13 15:01:33,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12181 conditions, 1850 events. 861/1850 cut-off events. For 26857/26897 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11535 event pairs, 111 based on Foata normal form. 18/1836 useless extension candidates. Maximal degree in co-relation 12112. Up to 827 conditions per place. [2024-11-13 15:01:33,461 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 167 selfloop transitions, 98 changer transitions 0/303 dead transitions. [2024-11-13 15:01:33,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 303 transitions, 4758 flow [2024-11-13 15:01:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:01:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:01:33,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 878 transitions. [2024-11-13 15:01:33,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542929292929293 [2024-11-13 15:01:33,463 INFO L175 Difference]: Start difference. First operand has 206 places, 263 transitions, 3915 flow. Second operand 12 states and 878 transitions. [2024-11-13 15:01:33,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 303 transitions, 4758 flow [2024-11-13 15:01:33,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 303 transitions, 4559 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-13 15:01:33,555 INFO L231 Difference]: Finished difference. Result has 209 places, 265 transitions, 3952 flow [2024-11-13 15:01:33,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3716, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3952, PETRI_PLACES=209, PETRI_TRANSITIONS=265} [2024-11-13 15:01:33,556 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 87 predicate places. [2024-11-13 15:01:33,556 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 265 transitions, 3952 flow [2024-11-13 15:01:33,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:33,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:33,556 INFO L204 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] [2024-11-13 15:01:33,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 15:01:33,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:33,757 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:33,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:33,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1119186236, now seen corresponding path program 13 times [2024-11-13 15:01:33,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:33,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004252855] [2024-11-13 15:01:33,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:01:33,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:33,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:33,759 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:33,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 15:01:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:34,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:01:34,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:34,094 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 [2024-11-13 15:01:34,299 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 [2024-11-13 15:01:34,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:01:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:34,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:34,388 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004252855] [2024-11-13 15:01:34,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004252855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:34,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:34,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:01:34,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732595083] [2024-11-13 15:01:34,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:34,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:01:34,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:34,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:01:34,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:01:36,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:01:36,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 265 transitions, 3952 flow. Second operand has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:36,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:36,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:01:36,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:37,529 INFO L124 PetriNetUnfolderBase]: 941/2027 cut-off events. [2024-11-13 15:01:37,530 INFO L125 PetriNetUnfolderBase]: For 29648/29711 co-relation queries the response was YES. [2024-11-13 15:01:37,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13524 conditions, 2027 events. 941/2027 cut-off events. For 29648/29711 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13074 event pairs, 109 based on Foata normal form. 30/2028 useless extension candidates. Maximal degree in co-relation 13454. Up to 796 conditions per place. [2024-11-13 15:01:37,546 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 173 selfloop transitions, 126 changer transitions 0/337 dead transitions. [2024-11-13 15:01:37,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 337 transitions, 5215 flow [2024-11-13 15:01:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:01:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 15:01:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1084 transitions. [2024-11-13 15:01:37,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5474747474747474 [2024-11-13 15:01:37,549 INFO L175 Difference]: Start difference. First operand has 209 places, 265 transitions, 3952 flow. Second operand 15 states and 1084 transitions. [2024-11-13 15:01:37,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 337 transitions, 5215 flow [2024-11-13 15:01:37,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 337 transitions, 5033 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-11-13 15:01:37,640 INFO L231 Difference]: Finished difference. Result has 216 places, 271 transitions, 4148 flow [2024-11-13 15:01:37,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3770, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4148, PETRI_PLACES=216, PETRI_TRANSITIONS=271} [2024-11-13 15:01:37,641 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 94 predicate places. [2024-11-13 15:01:37,641 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 271 transitions, 4148 flow [2024-11-13 15:01:37,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:37,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:37,641 INFO L204 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] [2024-11-13 15:01:37,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 15:01:37,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:37,842 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:37,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:37,842 INFO L85 PathProgramCache]: Analyzing trace with hash -146767978, now seen corresponding path program 14 times [2024-11-13 15:01:37,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:37,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672181058] [2024-11-13 15:01:37,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:01:37,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:37,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:37,844 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:37,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 15:01:38,197 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:01:38,197 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:38,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 15:01:38,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:38,378 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 [2024-11-13 15:01:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:38,418 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:38,418 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:38,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672181058] [2024-11-13 15:01:38,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672181058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:38,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:38,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:01:38,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702945135] [2024-11-13 15:01:38,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:38,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:01:38,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:38,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:01:38,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:01:38,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2024-11-13 15:01:38,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 271 transitions, 4148 flow. Second operand has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:38,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:38,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2024-11-13 15:01:38,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:40,272 INFO L124 PetriNetUnfolderBase]: 1045/2409 cut-off events. [2024-11-13 15:01:40,272 INFO L125 PetriNetUnfolderBase]: For 34811/34893 co-relation queries the response was YES. [2024-11-13 15:01:40,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15782 conditions, 2409 events. 1045/2409 cut-off events. For 34811/34893 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16731 event pairs, 141 based on Foata normal form. 21/2394 useless extension candidates. Maximal degree in co-relation 15711. Up to 908 conditions per place. [2024-11-13 15:01:40,313 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 220 selfloop transitions, 87 changer transitions 0/345 dead transitions. [2024-11-13 15:01:40,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 345 transitions, 5414 flow [2024-11-13 15:01:40,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:01:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 15:01:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 893 transitions. [2024-11-13 15:01:40,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6150137741046832 [2024-11-13 15:01:40,315 INFO L175 Difference]: Start difference. First operand has 216 places, 271 transitions, 4148 flow. Second operand 11 states and 893 transitions. [2024-11-13 15:01:40,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 345 transitions, 5414 flow [2024-11-13 15:01:40,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 345 transitions, 4980 flow, removed 24 selfloop flow, removed 20 redundant places. [2024-11-13 15:01:40,452 INFO L231 Difference]: Finished difference. Result has 209 places, 278 transitions, 4070 flow [2024-11-13 15:01:40,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3718, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4070, PETRI_PLACES=209, PETRI_TRANSITIONS=278} [2024-11-13 15:01:40,453 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 87 predicate places. [2024-11-13 15:01:40,453 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 278 transitions, 4070 flow [2024-11-13 15:01:40,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:40,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:40,453 INFO L204 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] [2024-11-13 15:01:40,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 15:01:40,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:40,654 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:40,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:40,654 INFO L85 PathProgramCache]: Analyzing trace with hash 638013714, now seen corresponding path program 15 times [2024-11-13 15:01:40,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:40,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454341891] [2024-11-13 15:01:40,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:01:40,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:40,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:40,656 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:40,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 15:01:41,007 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 15:01:41,007 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:41,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:01:41,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:41,025 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 [2024-11-13 15:01:41,262 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 [2024-11-13 15:01:41,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:01:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:41,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:41,363 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:41,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454341891] [2024-11-13 15:01:41,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454341891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:41,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:41,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:01:41,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977778884] [2024-11-13 15:01:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:41,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:01:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:41,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:01:41,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:01:43,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 132 [2024-11-13 15:01:43,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 278 transitions, 4070 flow. Second operand has 9 states, 9 states have (on average 70.33333333333333) internal successors, (633), 9 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:43,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:43,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 132 [2024-11-13 15:01:43,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:44,478 INFO L124 PetriNetUnfolderBase]: 1022/2343 cut-off events. [2024-11-13 15:01:44,478 INFO L125 PetriNetUnfolderBase]: For 33969/34035 co-relation queries the response was YES. [2024-11-13 15:01:44,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15254 conditions, 2343 events. 1022/2343 cut-off events. For 33969/34035 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16022 event pairs, 183 based on Foata normal form. 19/2317 useless extension candidates. Maximal degree in co-relation 15187. Up to 1252 conditions per place. [2024-11-13 15:01:44,496 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 170 selfloop transitions, 99 changer transitions 0/307 dead transitions. [2024-11-13 15:01:44,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 307 transitions, 4843 flow [2024-11-13 15:01:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:01:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 15:01:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 974 transitions. [2024-11-13 15:01:44,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675990675990676 [2024-11-13 15:01:44,498 INFO L175 Difference]: Start difference. First operand has 209 places, 278 transitions, 4070 flow. Second operand 13 states and 974 transitions. [2024-11-13 15:01:44,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 307 transitions, 4843 flow [2024-11-13 15:01:44,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 307 transitions, 4684 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-11-13 15:01:44,621 INFO L231 Difference]: Finished difference. Result has 216 places, 279 transitions, 4149 flow [2024-11-13 15:01:44,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3873, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4149, PETRI_PLACES=216, PETRI_TRANSITIONS=279} [2024-11-13 15:01:44,622 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 94 predicate places. [2024-11-13 15:01:44,622 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 279 transitions, 4149 flow [2024-11-13 15:01:44,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.33333333333333) internal successors, (633), 9 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:44,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:44,623 INFO L204 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] [2024-11-13 15:01:44,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 15:01:44,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:44,823 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:44,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:44,824 INFO L85 PathProgramCache]: Analyzing trace with hash -266397654, now seen corresponding path program 16 times [2024-11-13 15:01:44,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:44,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822867064] [2024-11-13 15:01:44,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:01:44,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:44,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:44,826 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:44,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 15:01:45,169 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:01:45,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:45,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 15:01:45,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:45,299 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 [2024-11-13 15:01:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:45,345 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:45,345 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822867064] [2024-11-13 15:01:45,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822867064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:45,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:45,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:01:45,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530287579] [2024-11-13 15:01:45,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:45,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:01:45,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:01:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:01:45,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2024-11-13 15:01:45,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 279 transitions, 4149 flow. Second operand has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:45,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:45,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2024-11-13 15:01:45,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:46,763 INFO L124 PetriNetUnfolderBase]: 980/2224 cut-off events. [2024-11-13 15:01:46,763 INFO L125 PetriNetUnfolderBase]: For 31462/31500 co-relation queries the response was YES. [2024-11-13 15:01:46,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14496 conditions, 2224 events. 980/2224 cut-off events. For 31462/31500 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14893 event pairs, 161 based on Foata normal form. 15/2201 useless extension candidates. Maximal degree in co-relation 14427. Up to 908 conditions per place. [2024-11-13 15:01:46,778 INFO L140 encePairwiseOnDemand]: 123/132 looper letters, 204 selfloop transitions, 86 changer transitions 0/328 dead transitions. [2024-11-13 15:01:46,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 328 transitions, 5111 flow [2024-11-13 15:01:46,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:01:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 15:01:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 881 transitions. [2024-11-13 15:01:46,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6067493112947658 [2024-11-13 15:01:46,779 INFO L175 Difference]: Start difference. First operand has 216 places, 279 transitions, 4149 flow. Second operand 11 states and 881 transitions. [2024-11-13 15:01:46,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 328 transitions, 5111 flow [2024-11-13 15:01:46,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 328 transitions, 4929 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-11-13 15:01:46,890 INFO L231 Difference]: Finished difference. Result has 219 places, 283 transitions, 4283 flow [2024-11-13 15:01:46,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4283, PETRI_PLACES=219, PETRI_TRANSITIONS=283} [2024-11-13 15:01:46,891 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 97 predicate places. [2024-11-13 15:01:46,891 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 283 transitions, 4283 flow [2024-11-13 15:01:46,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:46,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:46,892 INFO L204 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] [2024-11-13 15:01:46,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 15:01:47,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:47,092 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:47,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:47,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1770249182, now seen corresponding path program 17 times [2024-11-13 15:01:47,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:47,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114899534] [2024-11-13 15:01:47,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:01:47,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:47,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:47,096 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:47,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 15:01:47,435 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:01:47,436 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:47,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:01:47,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:47,453 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 [2024-11-13 15:01:47,662 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 [2024-11-13 15:01:47,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:01:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:47,766 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:47,766 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:47,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114899534] [2024-11-13 15:01:47,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114899534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:47,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:47,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:01:47,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40332578] [2024-11-13 15:01:47,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:47,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:01:47,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:01:47,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:01:49,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:01:49,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 283 transitions, 4283 flow. Second operand has 8 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:49,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:49,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:01:49,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:50,775 INFO L124 PetriNetUnfolderBase]: 704/1749 cut-off events. [2024-11-13 15:01:50,775 INFO L125 PetriNetUnfolderBase]: For 25162/25198 co-relation queries the response was YES. [2024-11-13 15:01:50,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11153 conditions, 1749 events. 704/1749 cut-off events. For 25162/25198 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 11457 event pairs, 124 based on Foata normal form. 17/1739 useless extension candidates. Maximal degree in co-relation 11081. Up to 726 conditions per place. [2024-11-13 15:01:50,790 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 134 selfloop transitions, 131 changer transitions 0/303 dead transitions. [2024-11-13 15:01:50,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 303 transitions, 4925 flow [2024-11-13 15:01:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:01:50,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:01:50,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 868 transitions. [2024-11-13 15:01:50,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.547979797979798 [2024-11-13 15:01:50,792 INFO L175 Difference]: Start difference. First operand has 219 places, 283 transitions, 4283 flow. Second operand 12 states and 868 transitions. [2024-11-13 15:01:50,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 303 transitions, 4925 flow [2024-11-13 15:01:50,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 303 transitions, 4695 flow, removed 74 selfloop flow, removed 7 redundant places. [2024-11-13 15:01:50,901 INFO L231 Difference]: Finished difference. Result has 229 places, 278 transitions, 4409 flow [2024-11-13 15:01:50,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3779, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4409, PETRI_PLACES=229, PETRI_TRANSITIONS=278} [2024-11-13 15:01:50,902 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 107 predicate places. [2024-11-13 15:01:50,902 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 278 transitions, 4409 flow [2024-11-13 15:01:50,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:50,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:50,902 INFO L204 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] [2024-11-13 15:01:50,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 15:01:51,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:51,103 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:51,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:51,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1364914856, now seen corresponding path program 18 times [2024-11-13 15:01:51,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:51,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105325030] [2024-11-13 15:01:51,104 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:01:51,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:51,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:51,106 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:51,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-13 15:01:51,457 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-13 15:01:51,457 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:51,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:01:51,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:51,474 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 [2024-11-13 15:01:51,712 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 [2024-11-13 15:01:51,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:01:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:51,807 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:51,807 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:51,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105325030] [2024-11-13 15:01:51,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105325030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:51,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:51,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:01:51,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037603379] [2024-11-13 15:01:51,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:51,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:01:51,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:51,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:01:51,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:01:53,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:01:53,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 278 transitions, 4409 flow. Second operand has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:53,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:53,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:01:53,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:55,243 INFO L124 PetriNetUnfolderBase]: 737/1868 cut-off events. [2024-11-13 15:01:55,243 INFO L125 PetriNetUnfolderBase]: For 26163/26206 co-relation queries the response was YES. [2024-11-13 15:01:55,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12040 conditions, 1868 events. 737/1868 cut-off events. For 26163/26206 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 12822 event pairs, 79 based on Foata normal form. 20/1862 useless extension candidates. Maximal degree in co-relation 11962. Up to 666 conditions per place. [2024-11-13 15:01:55,258 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 137 selfloop transitions, 148 changer transitions 0/323 dead transitions. [2024-11-13 15:01:55,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 323 transitions, 5309 flow [2024-11-13 15:01:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:01:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 15:01:55,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1080 transitions. [2024-11-13 15:01:55,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-13 15:01:55,259 INFO L175 Difference]: Start difference. First operand has 229 places, 278 transitions, 4409 flow. Second operand 15 states and 1080 transitions. [2024-11-13 15:01:55,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 323 transitions, 5309 flow [2024-11-13 15:01:55,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 323 transitions, 5105 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-11-13 15:01:55,362 INFO L231 Difference]: Finished difference. Result has 239 places, 281 transitions, 4589 flow [2024-11-13 15:01:55,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4205, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4589, PETRI_PLACES=239, PETRI_TRANSITIONS=281} [2024-11-13 15:01:55,363 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 117 predicate places. [2024-11-13 15:01:55,363 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 281 transitions, 4589 flow [2024-11-13 15:01:55,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:55,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:55,363 INFO L204 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] [2024-11-13 15:01:55,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-13 15:01:55,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:55,564 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:55,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash 457429756, now seen corresponding path program 19 times [2024-11-13 15:01:55,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:55,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086599234] [2024-11-13 15:01:55,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:01:55,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:55,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:55,567 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:55,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 15:01:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:55,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:01:55,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:55,927 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 [2024-11-13 15:01:56,172 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 [2024-11-13 15:01:56,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:01:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:56,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:56,298 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:01:56,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086599234] [2024-11-13 15:01:56,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086599234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:56,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:56,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:01:56,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858646522] [2024-11-13 15:01:56,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:56,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:01:56,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:01:56,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:01:56,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:01:57,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:01:57,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 281 transitions, 4589 flow. Second operand has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:57,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:57,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:01:57,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:59,438 INFO L124 PetriNetUnfolderBase]: 748/1904 cut-off events. [2024-11-13 15:01:59,438 INFO L125 PetriNetUnfolderBase]: For 27699/27742 co-relation queries the response was YES. [2024-11-13 15:01:59,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12568 conditions, 1904 events. 748/1904 cut-off events. For 27699/27742 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 13212 event pairs, 94 based on Foata normal form. 16/1891 useless extension candidates. Maximal degree in co-relation 12490. Up to 767 conditions per place. [2024-11-13 15:01:59,452 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 149 selfloop transitions, 133 changer transitions 0/320 dead transitions. [2024-11-13 15:01:59,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 320 transitions, 5424 flow [2024-11-13 15:01:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:01:59,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 15:01:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 947 transitions. [2024-11-13 15:01:59,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5518648018648019 [2024-11-13 15:01:59,455 INFO L175 Difference]: Start difference. First operand has 239 places, 281 transitions, 4589 flow. Second operand 13 states and 947 transitions. [2024-11-13 15:01:59,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 320 transitions, 5424 flow [2024-11-13 15:01:59,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 320 transitions, 5084 flow, removed 35 selfloop flow, removed 13 redundant places. [2024-11-13 15:01:59,568 INFO L231 Difference]: Finished difference. Result has 239 places, 283 transitions, 4572 flow [2024-11-13 15:01:59,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4265, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4572, PETRI_PLACES=239, PETRI_TRANSITIONS=283} [2024-11-13 15:01:59,568 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 117 predicate places. [2024-11-13 15:01:59,568 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 283 transitions, 4572 flow [2024-11-13 15:01:59,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:59,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:59,569 INFO L204 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] [2024-11-13 15:01:59,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-13 15:01:59,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:59,770 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:01:59,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:59,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2111482002, now seen corresponding path program 20 times [2024-11-13 15:01:59,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:01:59,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221899476] [2024-11-13 15:01:59,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:01:59,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:59,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:59,774 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:59,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-13 15:02:00,174 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:02:00,175 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:00,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:02:00,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:00,185 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 [2024-11-13 15:02:00,355 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 [2024-11-13 15:02:00,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:02:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:00,484 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:02:00,484 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:02:00,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221899476] [2024-11-13 15:02:00,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221899476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:00,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:00,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:02:00,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080933008] [2024-11-13 15:02:00,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:00,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:02:00,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:02:00,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:02:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:02:02,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:02:02,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 283 transitions, 4572 flow. Second operand has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:02,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:02:02,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:02:02,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:02:03,588 INFO L124 PetriNetUnfolderBase]: 746/1903 cut-off events. [2024-11-13 15:02:03,588 INFO L125 PetriNetUnfolderBase]: For 26993/27036 co-relation queries the response was YES. [2024-11-13 15:02:03,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12431 conditions, 1903 events. 746/1903 cut-off events. For 26993/27036 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13208 event pairs, 112 based on Foata normal form. 14/1886 useless extension candidates. Maximal degree in co-relation 12354. Up to 831 conditions per place. [2024-11-13 15:02:03,602 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 130 selfloop transitions, 138 changer transitions 0/306 dead transitions. [2024-11-13 15:02:03,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 306 transitions, 5262 flow [2024-11-13 15:02:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:02:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 15:02:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 925 transitions. [2024-11-13 15:02:03,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.539044289044289 [2024-11-13 15:02:03,604 INFO L175 Difference]: Start difference. First operand has 239 places, 283 transitions, 4572 flow. Second operand 13 states and 925 transitions. [2024-11-13 15:02:03,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 306 transitions, 5262 flow [2024-11-13 15:02:03,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 306 transitions, 4981 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-11-13 15:02:03,711 INFO L231 Difference]: Finished difference. Result has 241 places, 284 transitions, 4586 flow [2024-11-13 15:02:03,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4291, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4586, PETRI_PLACES=241, PETRI_TRANSITIONS=284} [2024-11-13 15:02:03,712 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 119 predicate places. [2024-11-13 15:02:03,712 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 284 transitions, 4586 flow [2024-11-13 15:02:03,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:03,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:02:03,712 INFO L204 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] [2024-11-13 15:02:03,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-13 15:02:03,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:03,913 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:02:03,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:03,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1259137640, now seen corresponding path program 21 times [2024-11-13 15:02:03,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:02:03,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795265542] [2024-11-13 15:02:03,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:02:03,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:03,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:03,915 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:03,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-13 15:02:04,279 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 15:02:04,279 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:04,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 15:02:04,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:04,458 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 [2024-11-13 15:02:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:04,477 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:02:04,477 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:02:04,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795265542] [2024-11-13 15:02:04,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795265542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:04,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:04,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:02:04,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826464985] [2024-11-13 15:02:04,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:04,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:02:04,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:02:04,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:02:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:02:04,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2024-11-13 15:02:04,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 284 transitions, 4586 flow. Second operand has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:04,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:02:04,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2024-11-13 15:02:04,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:02:06,480 INFO L124 PetriNetUnfolderBase]: 842/2276 cut-off events. [2024-11-13 15:02:06,481 INFO L125 PetriNetUnfolderBase]: For 30279/30357 co-relation queries the response was YES. [2024-11-13 15:02:06,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14250 conditions, 2276 events. 842/2276 cut-off events. For 30279/30357 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16916 event pairs, 117 based on Foata normal form. 17/2265 useless extension candidates. Maximal degree in co-relation 14172. Up to 847 conditions per place. [2024-11-13 15:02:06,501 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 223 selfloop transitions, 95 changer transitions 0/356 dead transitions. [2024-11-13 15:02:06,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 356 transitions, 5836 flow [2024-11-13 15:02:06,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:02:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:02:06,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 959 transitions. [2024-11-13 15:02:06,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6054292929292929 [2024-11-13 15:02:06,504 INFO L175 Difference]: Start difference. First operand has 241 places, 284 transitions, 4586 flow. Second operand 12 states and 959 transitions. [2024-11-13 15:02:06,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 356 transitions, 5836 flow [2024-11-13 15:02:06,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 356 transitions, 5555 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-11-13 15:02:06,643 INFO L231 Difference]: Finished difference. Result has 244 places, 291 transitions, 4716 flow [2024-11-13 15:02:06,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4305, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4716, PETRI_PLACES=244, PETRI_TRANSITIONS=291} [2024-11-13 15:02:06,644 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 122 predicate places. [2024-11-13 15:02:06,644 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 291 transitions, 4716 flow [2024-11-13 15:02:06,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:06,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:02:06,645 INFO L204 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] [2024-11-13 15:02:06,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-13 15:02:06,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:06,846 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:02:06,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:06,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1226015650, now seen corresponding path program 22 times [2024-11-13 15:02:06,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:02:06,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483811163] [2024-11-13 15:02:06,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:02:06,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:06,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:06,848 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:06,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-13 15:02:07,235 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:02:07,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:07,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 15:02:07,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:07,356 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 [2024-11-13 15:02:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:07,404 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:02:07,404 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:02:07,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483811163] [2024-11-13 15:02:07,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483811163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:07,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:07,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:02:07,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932667781] [2024-11-13 15:02:07,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:07,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:02:07,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:02:07,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:02:07,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:02:07,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2024-11-13 15:02:07,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 291 transitions, 4716 flow. Second operand has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:07,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:02:07,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2024-11-13 15:02:07,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:02:09,012 INFO L124 PetriNetUnfolderBase]: 789/2137 cut-off events. [2024-11-13 15:02:09,012 INFO L125 PetriNetUnfolderBase]: For 32154/32202 co-relation queries the response was YES. [2024-11-13 15:02:09,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13499 conditions, 2137 events. 789/2137 cut-off events. For 32154/32202 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15622 event pairs, 90 based on Foata normal form. 17/2131 useless extension candidates. Maximal degree in co-relation 13418. Up to 898 conditions per place. [2024-11-13 15:02:09,030 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 177 selfloop transitions, 109 changer transitions 0/324 dead transitions. [2024-11-13 15:02:09,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 324 transitions, 5625 flow [2024-11-13 15:02:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:02:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:02:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 930 transitions. [2024-11-13 15:02:09,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5871212121212122 [2024-11-13 15:02:09,032 INFO L175 Difference]: Start difference. First operand has 244 places, 291 transitions, 4716 flow. Second operand 12 states and 930 transitions. [2024-11-13 15:02:09,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 324 transitions, 5625 flow [2024-11-13 15:02:09,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 324 transitions, 5460 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-11-13 15:02:09,156 INFO L231 Difference]: Finished difference. Result has 248 places, 295 transitions, 4892 flow [2024-11-13 15:02:09,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4517, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4892, PETRI_PLACES=248, PETRI_TRANSITIONS=295} [2024-11-13 15:02:09,157 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 126 predicate places. [2024-11-13 15:02:09,157 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 295 transitions, 4892 flow [2024-11-13 15:02:09,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:09,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:02:09,157 INFO L204 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] [2024-11-13 15:02:09,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-13 15:02:09,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:09,358 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:02:09,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:09,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2018586640, now seen corresponding path program 23 times [2024-11-13 15:02:09,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:02:09,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270856636] [2024-11-13 15:02:09,359 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:02:09,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:09,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:09,360 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:09,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 15:02:09,755 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:02:09,755 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:09,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:02:09,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:09,774 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 [2024-11-13 15:02:10,024 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 11 treesize of output 9 [2024-11-13 15:02:10,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:02:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:10,216 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:02:10,216 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:02:10,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270856636] [2024-11-13 15:02:10,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270856636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:10,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:10,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:02:10,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199887762] [2024-11-13 15:02:10,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:10,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:02:10,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:02:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:02:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:02:12,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:02:12,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 295 transitions, 4892 flow. Second operand has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:12,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:02:12,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:02:12,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:02:13,385 INFO L124 PetriNetUnfolderBase]: 780/2113 cut-off events. [2024-11-13 15:02:13,385 INFO L125 PetriNetUnfolderBase]: For 33192/33235 co-relation queries the response was YES. [2024-11-13 15:02:13,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13793 conditions, 2113 events. 780/2113 cut-off events. For 33192/33235 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 15409 event pairs, 159 based on Foata normal form. 18/2092 useless extension candidates. Maximal degree in co-relation 13711. Up to 985 conditions per place. [2024-11-13 15:02:13,405 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 152 selfloop transitions, 133 changer transitions 0/323 dead transitions. [2024-11-13 15:02:13,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 323 transitions, 5690 flow [2024-11-13 15:02:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:02:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 15:02:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 933 transitions. [2024-11-13 15:02:13,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5437062937062938 [2024-11-13 15:02:13,408 INFO L175 Difference]: Start difference. First operand has 248 places, 295 transitions, 4892 flow. Second operand 13 states and 933 transitions. [2024-11-13 15:02:13,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 323 transitions, 5690 flow [2024-11-13 15:02:13,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 323 transitions, 5548 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-11-13 15:02:13,545 INFO L231 Difference]: Finished difference. Result has 254 places, 297 transitions, 5084 flow [2024-11-13 15:02:13,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4750, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5084, PETRI_PLACES=254, PETRI_TRANSITIONS=297} [2024-11-13 15:02:13,546 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 132 predicate places. [2024-11-13 15:02:13,546 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 297 transitions, 5084 flow [2024-11-13 15:02:13,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:13,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:02:13,546 INFO L204 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] [2024-11-13 15:02:13,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-13 15:02:13,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:13,747 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:02:13,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:13,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1185816152, now seen corresponding path program 24 times [2024-11-13 15:02:13,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:02:13,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259544494] [2024-11-13 15:02:13,748 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:02:13,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:13,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:13,749 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:13,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-13 15:02:14,131 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-13 15:02:14,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:14,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:02:14,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:14,142 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 [2024-11-13 15:02:14,346 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 [2024-11-13 15:02:14,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:02:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:14,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:02:14,426 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:02:14,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259544494] [2024-11-13 15:02:14,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259544494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:14,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:14,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:02:14,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894005996] [2024-11-13 15:02:14,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:14,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:02:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:02:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:02:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:02:16,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:02:16,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 297 transitions, 5084 flow. Second operand has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:16,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:02:16,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:02:16,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:02:18,386 INFO L124 PetriNetUnfolderBase]: 785/2142 cut-off events. [2024-11-13 15:02:18,386 INFO L125 PetriNetUnfolderBase]: For 34184/34241 co-relation queries the response was YES. [2024-11-13 15:02:18,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14248 conditions, 2142 events. 785/2142 cut-off events. For 34184/34241 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 15762 event pairs, 141 based on Foata normal form. 20/2125 useless extension candidates. Maximal degree in co-relation 14165. Up to 925 conditions per place. [2024-11-13 15:02:18,404 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 178 selfloop transitions, 128 changer transitions 0/344 dead transitions. [2024-11-13 15:02:18,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 344 transitions, 6082 flow [2024-11-13 15:02:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:02:18,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 15:02:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 956 transitions. [2024-11-13 15:02:18,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5571095571095571 [2024-11-13 15:02:18,406 INFO L175 Difference]: Start difference. First operand has 254 places, 297 transitions, 5084 flow. Second operand 13 states and 956 transitions. [2024-11-13 15:02:18,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 344 transitions, 6082 flow [2024-11-13 15:02:18,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 344 transitions, 5790 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-11-13 15:02:18,570 INFO L231 Difference]: Finished difference. Result has 257 places, 300 transitions, 5145 flow [2024-11-13 15:02:18,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4792, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5145, PETRI_PLACES=257, PETRI_TRANSITIONS=300} [2024-11-13 15:02:18,571 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 135 predicate places. [2024-11-13 15:02:18,571 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 300 transitions, 5145 flow [2024-11-13 15:02:18,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:18,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:02:18,572 INFO L204 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] [2024-11-13 15:02:18,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-13 15:02:18,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:18,772 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:02:18,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:18,772 INFO L85 PathProgramCache]: Analyzing trace with hash 204758306, now seen corresponding path program 25 times [2024-11-13 15:02:18,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:02:18,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288186151] [2024-11-13 15:02:18,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:02:18,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:18,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:18,775 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:18,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-13 15:02:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:19,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:02:19,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:19,183 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 [2024-11-13 15:02:19,395 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 [2024-11-13 15:02:19,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:02:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:19,474 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:02:19,474 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:02:19,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288186151] [2024-11-13 15:02:19,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288186151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:19,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:19,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:02:19,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400872006] [2024-11-13 15:02:19,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:19,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:02:19,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:02:19,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:02:19,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:02:21,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-11-13 15:02:21,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 300 transitions, 5145 flow. Second operand has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:21,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:02:21,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-11-13 15:02:21,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:02:23,292 INFO L124 PetriNetUnfolderBase]: 783/2143 cut-off events. [2024-11-13 15:02:23,292 INFO L125 PetriNetUnfolderBase]: For 35025/35106 co-relation queries the response was YES. [2024-11-13 15:02:23,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14295 conditions, 2143 events. 783/2143 cut-off events. For 35025/35106 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 15825 event pairs, 148 based on Foata normal form. 16/2121 useless extension candidates. Maximal degree in co-relation 14211. Up to 840 conditions per place. [2024-11-13 15:02:23,311 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 160 selfloop transitions, 150 changer transitions 0/348 dead transitions. [2024-11-13 15:02:23,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 348 transitions, 6123 flow [2024-11-13 15:02:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:02:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 15:02:23,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1088 transitions. [2024-11-13 15:02:23,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5494949494949495 [2024-11-13 15:02:23,313 INFO L175 Difference]: Start difference. First operand has 257 places, 300 transitions, 5145 flow. Second operand 15 states and 1088 transitions. [2024-11-13 15:02:23,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 348 transitions, 6123 flow [2024-11-13 15:02:23,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 348 transitions, 5871 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-11-13 15:02:23,463 INFO L231 Difference]: Finished difference. Result has 264 places, 302 transitions, 5279 flow [2024-11-13 15:02:23,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4869, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5279, PETRI_PLACES=264, PETRI_TRANSITIONS=302} [2024-11-13 15:02:23,464 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 142 predicate places. [2024-11-13 15:02:23,464 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 302 transitions, 5279 flow [2024-11-13 15:02:23,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.33333333333333) internal successors, (606), 9 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:23,464 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:02:23,464 INFO L204 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] [2024-11-13 15:02:23,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-13 15:02:23,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:23,664 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:02:23,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:23,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1513780324, now seen corresponding path program 26 times [2024-11-13 15:02:23,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:02:23,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36559257] [2024-11-13 15:02:23,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:02:23,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:23,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:23,668 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:23,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-13 15:02:24,081 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:02:24,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:24,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 15:02:24,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:24,250 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 [2024-11-13 15:02:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:24,283 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:02:24,283 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:02:24,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36559257] [2024-11-13 15:02:24,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36559257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:24,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:24,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:02:24,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034966955] [2024-11-13 15:02:24,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:24,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:02:24,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:02:24,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:02:24,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:02:24,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2024-11-13 15:02:24,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 302 transitions, 5279 flow. Second operand has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:24,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:02:24,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2024-11-13 15:02:24,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:02:26,167 INFO L124 PetriNetUnfolderBase]: 783/2162 cut-off events. [2024-11-13 15:02:26,167 INFO L125 PetriNetUnfolderBase]: For 36285/36352 co-relation queries the response was YES. [2024-11-13 15:02:26,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14500 conditions, 2162 events. 783/2162 cut-off events. For 36285/36352 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 16119 event pairs, 132 based on Foata normal form. 14/2149 useless extension candidates. Maximal degree in co-relation 14415. Up to 652 conditions per place. [2024-11-13 15:02:26,182 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 258 selfloop transitions, 90 changer transitions 0/386 dead transitions. [2024-11-13 15:02:26,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 386 transitions, 6668 flow [2024-11-13 15:02:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:02:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:02:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 978 transitions. [2024-11-13 15:02:26,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6174242424242424 [2024-11-13 15:02:26,184 INFO L175 Difference]: Start difference. First operand has 264 places, 302 transitions, 5279 flow. Second operand 12 states and 978 transitions. [2024-11-13 15:02:26,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 386 transitions, 6668 flow [2024-11-13 15:02:26,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 386 transitions, 6162 flow, removed 44 selfloop flow, removed 19 redundant places. [2024-11-13 15:02:26,322 INFO L231 Difference]: Finished difference. Result has 259 places, 307 transitions, 5189 flow [2024-11-13 15:02:26,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4799, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5189, PETRI_PLACES=259, PETRI_TRANSITIONS=307} [2024-11-13 15:02:26,322 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 137 predicate places. [2024-11-13 15:02:26,322 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 307 transitions, 5189 flow [2024-11-13 15:02:26,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:26,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:02:26,323 INFO L204 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] [2024-11-13 15:02:26,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-13 15:02:26,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:26,523 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:02:26,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:26,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1129545634, now seen corresponding path program 27 times [2024-11-13 15:02:26,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:02:26,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302146039] [2024-11-13 15:02:26,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:02:26,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:26,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:26,526 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:26,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-13 15:02:26,911 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 15:02:26,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:26,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:02:26,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:26,922 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 [2024-11-13 15:02:27,093 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 [2024-11-13 15:02:27,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:02:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:27,217 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:02:27,217 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:02:27,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302146039] [2024-11-13 15:02:27,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302146039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:27,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:27,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:02:27,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347324664] [2024-11-13 15:02:27,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:27,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:02:27,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:02:27,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:02:27,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:02:29,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 132 [2024-11-13 15:02:29,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 307 transitions, 5189 flow. Second operand has 9 states, 9 states have (on average 70.33333333333333) internal successors, (633), 9 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:29,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:02:29,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 132 [2024-11-13 15:02:29,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:02:30,756 INFO L124 PetriNetUnfolderBase]: 740/2044 cut-off events. [2024-11-13 15:02:30,756 INFO L125 PetriNetUnfolderBase]: For 34129/34172 co-relation queries the response was YES. [2024-11-13 15:02:30,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13329 conditions, 2044 events. 740/2044 cut-off events. For 34129/34172 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 14914 event pairs, 157 based on Foata normal form. 18/2023 useless extension candidates. Maximal degree in co-relation 13246. Up to 844 conditions per place. [2024-11-13 15:02:30,775 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 154 selfloop transitions, 142 changer transitions 0/334 dead transitions. [2024-11-13 15:02:30,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 334 transitions, 5943 flow [2024-11-13 15:02:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:02:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 15:02:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1043 transitions. [2024-11-13 15:02:30,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2024-11-13 15:02:30,778 INFO L175 Difference]: Start difference. First operand has 259 places, 307 transitions, 5189 flow. Second operand 14 states and 1043 transitions. [2024-11-13 15:02:30,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 334 transitions, 5943 flow [2024-11-13 15:02:30,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 334 transitions, 5705 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-11-13 15:02:30,950 INFO L231 Difference]: Finished difference. Result has 265 places, 306 transitions, 5239 flow [2024-11-13 15:02:30,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4883, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5239, PETRI_PLACES=265, PETRI_TRANSITIONS=306} [2024-11-13 15:02:30,951 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 143 predicate places. [2024-11-13 15:02:30,951 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 306 transitions, 5239 flow [2024-11-13 15:02:30,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.33333333333333) internal successors, (633), 9 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:30,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:02:30,951 INFO L204 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] [2024-11-13 15:02:30,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-13 15:02:31,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:31,152 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:02:31,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:31,152 INFO L85 PathProgramCache]: Analyzing trace with hash 297786930, now seen corresponding path program 28 times [2024-11-13 15:02:31,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:02:31,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721539274] [2024-11-13 15:02:31,152 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:02:31,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:31,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:31,154 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:31,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-13 15:02:31,584 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:02:31,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:31,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 15:02:31,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:31,725 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 [2024-11-13 15:02:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:31,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:02:31,773 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:02:31,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721539274] [2024-11-13 15:02:31,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721539274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:31,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:31,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:02:31,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672790929] [2024-11-13 15:02:31,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:31,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:02:31,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:02:31,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:02:31,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:02:32,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2024-11-13 15:02:32,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 306 transitions, 5239 flow. Second operand has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:32,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:02:32,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2024-11-13 15:02:32,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:02:33,406 INFO L124 PetriNetUnfolderBase]: 699/1927 cut-off events. [2024-11-13 15:02:33,406 INFO L125 PetriNetUnfolderBase]: For 30949/30966 co-relation queries the response was YES. [2024-11-13 15:02:33,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12668 conditions, 1927 events. 699/1927 cut-off events. For 30949/30966 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 13778 event pairs, 140 based on Foata normal form. 10/1907 useless extension candidates. Maximal degree in co-relation 12584. Up to 567 conditions per place. [2024-11-13 15:02:33,423 INFO L140 encePairwiseOnDemand]: 123/132 looper letters, 201 selfloop transitions, 103 changer transitions 0/339 dead transitions. [2024-11-13 15:02:33,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 339 transitions, 6056 flow [2024-11-13 15:02:33,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:02:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:02:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 942 transitions. [2024-11-13 15:02:33,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5946969696969697 [2024-11-13 15:02:33,425 INFO L175 Difference]: Start difference. First operand has 265 places, 306 transitions, 5239 flow. Second operand 12 states and 942 transitions. [2024-11-13 15:02:33,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 339 transitions, 6056 flow [2024-11-13 15:02:33,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 339 transitions, 5534 flow, removed 100 selfloop flow, removed 17 redundant places. [2024-11-13 15:02:33,586 INFO L231 Difference]: Finished difference. Result has 258 places, 298 transitions, 5022 flow [2024-11-13 15:02:33,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4718, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5022, PETRI_PLACES=258, PETRI_TRANSITIONS=298} [2024-11-13 15:02:33,586 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 136 predicate places. [2024-11-13 15:02:33,587 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 298 transitions, 5022 flow [2024-11-13 15:02:33,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:33,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:02:33,587 INFO L204 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] [2024-11-13 15:02:33,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-13 15:02:33,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:33,787 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:02:33,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:33,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1048429294, now seen corresponding path program 1 times [2024-11-13 15:02:33,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:02:33,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581392490] [2024-11-13 15:02:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:33,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:33,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:33,790 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:33,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-13 15:02:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:34,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:02:34,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:34,221 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 [2024-11-13 15:02:34,294 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:02:34,294 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:02:34,295 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:02:34,296 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 24 treesize of output 33 [2024-11-13 15:02:35,114 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 66 treesize of output 53 [2024-11-13 15:02:35,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:02:35,803 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:02:35,819 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 125 treesize of output 97 [2024-11-13 15:02:36,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:02:36,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:02:36,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:02:36,350 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 333 treesize of output 285 [2024-11-13 15:02:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:36,396 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:02:36,397 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:02:36,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581392490] [2024-11-13 15:02:36,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581392490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:36,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:36,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:02:36,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162246961] [2024-11-13 15:02:36,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:36,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:02:36,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:02:36,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:02:36,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:02:40,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:02:40,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 298 transitions, 5022 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:40,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:02:40,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:02:40,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:02:46,689 INFO L124 PetriNetUnfolderBase]: 1086/2614 cut-off events. [2024-11-13 15:02:46,689 INFO L125 PetriNetUnfolderBase]: For 38987/38987 co-relation queries the response was YES. [2024-11-13 15:02:46,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15319 conditions, 2614 events. 1086/2614 cut-off events. For 38987/38987 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 17978 event pairs, 294 based on Foata normal form. 0/2602 useless extension candidates. Maximal degree in co-relation 15238. Up to 1636 conditions per place. [2024-11-13 15:02:46,714 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 317 selfloop transitions, 123 changer transitions 0/446 dead transitions. [2024-11-13 15:02:46,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 446 transitions, 8013 flow [2024-11-13 15:02:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:02:46,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-13 15:02:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1041 transitions. [2024-11-13 15:02:46,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3584710743801653 [2024-11-13 15:02:46,717 INFO L175 Difference]: Start difference. First operand has 258 places, 298 transitions, 5022 flow. Second operand 22 states and 1041 transitions. [2024-11-13 15:02:46,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 446 transitions, 8013 flow [2024-11-13 15:02:46,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 446 transitions, 7617 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-11-13 15:02:46,944 INFO L231 Difference]: Finished difference. Result has 278 places, 361 transitions, 6456 flow [2024-11-13 15:02:46,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=4747, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6456, PETRI_PLACES=278, PETRI_TRANSITIONS=361} [2024-11-13 15:02:46,945 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 156 predicate places. [2024-11-13 15:02:46,945 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 361 transitions, 6456 flow [2024-11-13 15:02:46,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:46,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:02:46,945 INFO L204 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] [2024-11-13 15:02:46,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-13 15:02:47,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:47,146 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:02:47,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:47,146 INFO L85 PathProgramCache]: Analyzing trace with hash 48439306, now seen corresponding path program 2 times [2024-11-13 15:02:47,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:02:47,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586467193] [2024-11-13 15:02:47,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:02:47,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:47,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:47,149 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:47,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-13 15:02:47,572 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:02:47,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:47,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:02:47,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:47,604 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 [2024-11-13 15:02:47,700 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:02:47,701 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:02:47,702 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:02:47,703 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 24 treesize of output 33 [2024-11-13 15:02:48,778 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 66 treesize of output 53 [2024-11-13 15:02:49,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:02:49,367 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:02:49,382 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 125 treesize of output 97 [2024-11-13 15:02:49,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:02:49,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:02:49,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:02:49,992 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 333 treesize of output 285 [2024-11-13 15:02:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:50,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:02:50,033 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:02:50,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586467193] [2024-11-13 15:02:50,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586467193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:50,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:50,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:02:50,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402328987] [2024-11-13 15:02:50,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:50,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:02:50,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:02:50,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:02:50,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:02:57,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:02:57,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 361 transitions, 6456 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:57,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:02:57,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:02:57,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:03:06,113 INFO L124 PetriNetUnfolderBase]: 1203/2882 cut-off events. [2024-11-13 15:03:06,113 INFO L125 PetriNetUnfolderBase]: For 40364/40364 co-relation queries the response was YES. [2024-11-13 15:03:06,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17374 conditions, 2882 events. 1203/2882 cut-off events. For 40364/40364 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 20257 event pairs, 368 based on Foata normal form. 2/2884 useless extension candidates. Maximal degree in co-relation 17287. Up to 1778 conditions per place. [2024-11-13 15:03:06,136 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 328 selfloop transitions, 168 changer transitions 0/502 dead transitions. [2024-11-13 15:03:06,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 502 transitions, 9183 flow [2024-11-13 15:03:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:03:06,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 15:03:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1180 transitions. [2024-11-13 15:03:06,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-11-13 15:03:06,138 INFO L175 Difference]: Start difference. First operand has 278 places, 361 transitions, 6456 flow. Second operand 25 states and 1180 transitions. [2024-11-13 15:03:06,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 502 transitions, 9183 flow [2024-11-13 15:03:06,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 502 transitions, 9117 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-11-13 15:03:06,396 INFO L231 Difference]: Finished difference. Result has 309 places, 423 transitions, 8036 flow [2024-11-13 15:03:06,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=6393, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=8036, PETRI_PLACES=309, PETRI_TRANSITIONS=423} [2024-11-13 15:03:06,396 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 187 predicate places. [2024-11-13 15:03:06,396 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 423 transitions, 8036 flow [2024-11-13 15:03:06,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:06,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:03:06,397 INFO L204 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] [2024-11-13 15:03:06,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-13 15:03:06,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:06,597 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:03:06,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:06,598 INFO L85 PathProgramCache]: Analyzing trace with hash -752349836, now seen corresponding path program 3 times [2024-11-13 15:03:06,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:03:06,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636987814] [2024-11-13 15:03:06,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:03:06,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:06,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:06,600 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:06,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-13 15:03:07,018 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 15:03:07,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:03:07,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:03:07,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:07,039 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 [2024-11-13 15:03:07,103 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:03:07,103 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:03:07,104 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:03:07,104 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 24 treesize of output 33 [2024-11-13 15:03:07,877 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 66 treesize of output 53 [2024-11-13 15:03:08,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:03:08,666 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:03:08,680 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 125 treesize of output 97 [2024-11-13 15:03:08,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:03:08,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:03:09,113 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:03:09,113 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 333 treesize of output 285 [2024-11-13 15:03:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:09,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:03:09,153 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:03:09,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636987814] [2024-11-13 15:03:09,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636987814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:03:09,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:03:09,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:03:09,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450156187] [2024-11-13 15:03:09,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:03:09,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:03:09,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:03:09,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:03:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:03:14,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:03:14,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 423 transitions, 8036 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:14,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:03:14,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:03:14,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:03:19,324 INFO L124 PetriNetUnfolderBase]: 1314/3139 cut-off events. [2024-11-13 15:03:19,324 INFO L125 PetriNetUnfolderBase]: For 48152/48156 co-relation queries the response was YES. [2024-11-13 15:03:19,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19865 conditions, 3139 events. 1314/3139 cut-off events. For 48152/48156 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 22538 event pairs, 420 based on Foata normal form. 6/3145 useless extension candidates. Maximal degree in co-relation 19766. Up to 2016 conditions per place. [2024-11-13 15:03:19,353 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 371 selfloop transitions, 151 changer transitions 0/528 dead transitions. [2024-11-13 15:03:19,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 528 transitions, 10340 flow [2024-11-13 15:03:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 15:03:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-13 15:03:19,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1080 transitions. [2024-11-13 15:03:19,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3557312252964427 [2024-11-13 15:03:19,355 INFO L175 Difference]: Start difference. First operand has 309 places, 423 transitions, 8036 flow. Second operand 23 states and 1080 transitions. [2024-11-13 15:03:19,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 528 transitions, 10340 flow [2024-11-13 15:03:19,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 528 transitions, 10194 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-11-13 15:03:19,799 INFO L231 Difference]: Finished difference. Result has 336 places, 455 transitions, 8970 flow [2024-11-13 15:03:19,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=7914, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=8970, PETRI_PLACES=336, PETRI_TRANSITIONS=455} [2024-11-13 15:03:19,799 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 214 predicate places. [2024-11-13 15:03:19,800 INFO L471 AbstractCegarLoop]: Abstraction has has 336 places, 455 transitions, 8970 flow [2024-11-13 15:03:19,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:19,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:03:19,800 INFO L204 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] [2024-11-13 15:03:19,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-13 15:03:20,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:20,000 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:03:20,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash -541847312, now seen corresponding path program 4 times [2024-11-13 15:03:20,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:03:20,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426888591] [2024-11-13 15:03:20,001 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:03:20,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:20,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:20,003 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:20,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-13 15:03:20,450 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:03:20,450 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:03:20,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:03:20,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:20,475 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 [2024-11-13 15:03:20,544 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:03:20,544 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:03:20,544 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:03:20,545 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 24 treesize of output 33 [2024-11-13 15:03:21,409 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 66 treesize of output 53 [2024-11-13 15:03:21,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:03:22,076 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:03:22,090 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 125 treesize of output 97 [2024-11-13 15:03:22,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:03:22,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:03:22,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:03:22,667 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 333 treesize of output 285 [2024-11-13 15:03:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:22,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:03:22,711 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:03:22,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426888591] [2024-11-13 15:03:22,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426888591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:03:22,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:03:22,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:03:22,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268422264] [2024-11-13 15:03:22,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:03:22,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:03:22,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:03:22,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:03:22,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:03:28,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:03:28,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 455 transitions, 8970 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:28,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:03:28,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:03:28,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:03:35,656 INFO L124 PetriNetUnfolderBase]: 1443/3420 cut-off events. [2024-11-13 15:03:35,656 INFO L125 PetriNetUnfolderBase]: For 55734/55734 co-relation queries the response was YES. [2024-11-13 15:03:35,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22200 conditions, 3420 events. 1443/3420 cut-off events. For 55734/55734 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 24935 event pairs, 438 based on Foata normal form. 2/3422 useless extension candidates. Maximal degree in co-relation 22091. Up to 2157 conditions per place. [2024-11-13 15:03:35,693 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 365 selfloop transitions, 204 changer transitions 0/575 dead transitions. [2024-11-13 15:03:35,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 575 transitions, 11767 flow [2024-11-13 15:03:35,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:03:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 15:03:35,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1176 transitions. [2024-11-13 15:03:35,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3563636363636364 [2024-11-13 15:03:35,695 INFO L175 Difference]: Start difference. First operand has 336 places, 455 transitions, 8970 flow. Second operand 25 states and 1176 transitions. [2024-11-13 15:03:35,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 575 transitions, 11767 flow [2024-11-13 15:03:36,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 575 transitions, 11595 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-11-13 15:03:36,224 INFO L231 Difference]: Finished difference. Result has 365 places, 502 transitions, 10488 flow [2024-11-13 15:03:36,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=8819, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=10488, PETRI_PLACES=365, PETRI_TRANSITIONS=502} [2024-11-13 15:03:36,225 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 243 predicate places. [2024-11-13 15:03:36,225 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 502 transitions, 10488 flow [2024-11-13 15:03:36,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:36,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:03:36,226 INFO L204 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] [2024-11-13 15:03:36,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-13 15:03:36,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:36,426 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:03:36,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:36,426 INFO L85 PathProgramCache]: Analyzing trace with hash 510255966, now seen corresponding path program 5 times [2024-11-13 15:03:36,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:03:36,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857973522] [2024-11-13 15:03:36,427 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:03:36,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:36,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:36,428 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:36,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-13 15:03:36,857 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:03:36,857 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:03:36,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:03:36,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:36,891 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 [2024-11-13 15:03:36,952 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:03:36,952 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:03:36,953 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:03:36,954 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 24 treesize of output 33 [2024-11-13 15:03:37,697 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 66 treesize of output 53 [2024-11-13 15:03:38,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:03:38,483 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:03:38,496 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 125 treesize of output 97 [2024-11-13 15:03:38,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:03:38,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:03:38,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:03:38,981 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 333 treesize of output 285 [2024-11-13 15:03:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:39,031 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:03:39,031 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:03:39,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857973522] [2024-11-13 15:03:39,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857973522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:03:39,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:03:39,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:03:39,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737414144] [2024-11-13 15:03:39,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:03:39,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:03:39,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:03:39,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:03:39,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:03:43,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:03:43,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 502 transitions, 10488 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:43,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:03:43,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:03:43,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:03:50,821 INFO L124 PetriNetUnfolderBase]: 1548/3671 cut-off events. [2024-11-13 15:03:50,821 INFO L125 PetriNetUnfolderBase]: For 66774/66774 co-relation queries the response was YES. [2024-11-13 15:03:50,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24525 conditions, 3671 events. 1548/3671 cut-off events. For 66774/66774 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 27274 event pairs, 497 based on Foata normal form. 2/3673 useless extension candidates. Maximal degree in co-relation 24403. Up to 2386 conditions per place. [2024-11-13 15:03:50,863 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 407 selfloop transitions, 187 changer transitions 0/600 dead transitions. [2024-11-13 15:03:50,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 600 transitions, 12921 flow [2024-11-13 15:03:50,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 15:03:50,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 15:03:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1124 transitions. [2024-11-13 15:03:50,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3547979797979798 [2024-11-13 15:03:50,866 INFO L175 Difference]: Start difference. First operand has 365 places, 502 transitions, 10488 flow. Second operand 24 states and 1124 transitions. [2024-11-13 15:03:50,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 600 transitions, 12921 flow [2024-11-13 15:03:51,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 600 transitions, 12748 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-11-13 15:03:51,407 INFO L231 Difference]: Finished difference. Result has 394 places, 532 transitions, 11558 flow [2024-11-13 15:03:51,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=10316, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=11558, PETRI_PLACES=394, PETRI_TRANSITIONS=532} [2024-11-13 15:03:51,409 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 272 predicate places. [2024-11-13 15:03:51,409 INFO L471 AbstractCegarLoop]: Abstraction has has 394 places, 532 transitions, 11558 flow [2024-11-13 15:03:51,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:51,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:03:51,409 INFO L204 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] [2024-11-13 15:03:51,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-13 15:03:51,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:51,610 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:03:51,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:51,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1050284176, now seen corresponding path program 6 times [2024-11-13 15:03:51,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:03:51,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520011530] [2024-11-13 15:03:51,611 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:03:51,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:51,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:51,612 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:51,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-13 15:03:52,046 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-13 15:03:52,046 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:03:52,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:03:52,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:52,071 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 [2024-11-13 15:03:52,144 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:03:52,144 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:03:52,145 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:03:52,145 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 24 treesize of output 33 [2024-11-13 15:03:53,215 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 66 treesize of output 53 [2024-11-13 15:03:53,252 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:03:53,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:03:53,715 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 125 treesize of output 97 [2024-11-13 15:03:53,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:03:53,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:03:54,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:03:54,135 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 333 treesize of output 285 [2024-11-13 15:03:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:54,190 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:03:54,190 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:03:54,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520011530] [2024-11-13 15:03:54,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520011530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:03:54,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:03:54,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:03:54,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634417845] [2024-11-13 15:03:54,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:03:54,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:03:54,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:03:54,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:03:54,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:04:00,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:04:00,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 532 transitions, 11558 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:00,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:04:00,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:04:00,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:04:08,300 INFO L124 PetriNetUnfolderBase]: 1566/3727 cut-off events. [2024-11-13 15:04:08,300 INFO L125 PetriNetUnfolderBase]: For 71094/71094 co-relation queries the response was YES. [2024-11-13 15:04:08,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25508 conditions, 3727 events. 1566/3727 cut-off events. For 71094/71094 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 27870 event pairs, 472 based on Foata normal form. 1/3728 useless extension candidates. Maximal degree in co-relation 25374. Up to 2315 conditions per place. [2024-11-13 15:04:08,348 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 379 selfloop transitions, 229 changer transitions 0/614 dead transitions. [2024-11-13 15:04:08,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 614 transitions, 13480 flow [2024-11-13 15:04:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:04:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 15:04:08,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1177 transitions. [2024-11-13 15:04:08,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-11-13 15:04:08,350 INFO L175 Difference]: Start difference. First operand has 394 places, 532 transitions, 11558 flow. Second operand 25 states and 1177 transitions. [2024-11-13 15:04:08,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 614 transitions, 13480 flow [2024-11-13 15:04:08,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 614 transitions, 13284 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-11-13 15:04:08,911 INFO L231 Difference]: Finished difference. Result has 418 places, 540 transitions, 11961 flow [2024-11-13 15:04:08,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=11362, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11961, PETRI_PLACES=418, PETRI_TRANSITIONS=540} [2024-11-13 15:04:08,912 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 296 predicate places. [2024-11-13 15:04:08,912 INFO L471 AbstractCegarLoop]: Abstraction has has 418 places, 540 transitions, 11961 flow [2024-11-13 15:04:08,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:08,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:04:08,912 INFO L204 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] [2024-11-13 15:04:08,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-13 15:04:09,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:09,113 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:04:09,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1083223518, now seen corresponding path program 7 times [2024-11-13 15:04:09,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:04:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794418836] [2024-11-13 15:04:09,114 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:04:09,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:09,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:09,116 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:09,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-13 15:04:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:09,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 15:04:09,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:09,687 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:04:09,688 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:04:09,688 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:04:09,689 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 24 treesize of output 33 [2024-11-13 15:04:10,651 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 66 treesize of output 53 [2024-11-13 15:04:10,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:04:11,052 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 125 treesize of output 97 [2024-11-13 15:04:11,244 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:04:11,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:04:11,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:04:11,506 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 333 treesize of output 285 [2024-11-13 15:04:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:11,549 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:04:11,550 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:04:11,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794418836] [2024-11-13 15:04:11,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794418836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:04:11,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:04:11,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:04:11,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820108733] [2024-11-13 15:04:11,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:04:11,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:04:11,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:04:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:04:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:04:16,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-13 15:04:16,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 540 transitions, 11961 flow. Second operand has 18 states, 18 states have (on average 58.22222222222222) internal successors, (1048), 18 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:16,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:04:16,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-13 15:04:16,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:04:23,876 INFO L124 PetriNetUnfolderBase]: 1584/3797 cut-off events. [2024-11-13 15:04:23,876 INFO L125 PetriNetUnfolderBase]: For 76748/76752 co-relation queries the response was YES. [2024-11-13 15:04:23,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26446 conditions, 3797 events. 1584/3797 cut-off events. For 76748/76752 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 28609 event pairs, 465 based on Foata normal form. 5/3802 useless extension candidates. Maximal degree in co-relation 26306. Up to 2236 conditions per place. [2024-11-13 15:04:23,924 INFO L140 encePairwiseOnDemand]: 110/132 looper letters, 413 selfloop transitions, 219 changer transitions 0/638 dead transitions. [2024-11-13 15:04:23,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 638 transitions, 14149 flow [2024-11-13 15:04:23,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 15:04:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-13 15:04:23,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1461 transitions. [2024-11-13 15:04:23,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48122529644268774 [2024-11-13 15:04:23,926 INFO L175 Difference]: Start difference. First operand has 418 places, 540 transitions, 11961 flow. Second operand 23 states and 1461 transitions. [2024-11-13 15:04:23,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 638 transitions, 14149 flow [2024-11-13 15:04:24,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 638 transitions, 13826 flow, removed 36 selfloop flow, removed 14 redundant places. [2024-11-13 15:04:24,518 INFO L231 Difference]: Finished difference. Result has 432 places, 556 transitions, 12420 flow [2024-11-13 15:04:24,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=11648, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=12420, PETRI_PLACES=432, PETRI_TRANSITIONS=556} [2024-11-13 15:04:24,519 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 310 predicate places. [2024-11-13 15:04:24,519 INFO L471 AbstractCegarLoop]: Abstraction has has 432 places, 556 transitions, 12420 flow [2024-11-13 15:04:24,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 58.22222222222222) internal successors, (1048), 18 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:24,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:04:24,520 INFO L204 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] [2024-11-13 15:04:24,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-13 15:04:24,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:24,720 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:04:24,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:24,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1072353870, now seen corresponding path program 8 times [2024-11-13 15:04:24,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:04:24,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422569491] [2024-11-13 15:04:24,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:04:24,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:24,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:24,723 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:24,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-13 15:04:25,188 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:04:25,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:04:25,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:04:25,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:25,218 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 [2024-11-13 15:04:25,283 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:04:25,283 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:04:25,284 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:04:25,285 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 24 treesize of output 33 [2024-11-13 15:04:26,194 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 66 treesize of output 53 [2024-11-13 15:04:26,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:04:26,792 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:04:26,810 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 125 treesize of output 97 [2024-11-13 15:04:26,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:04:26,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:04:27,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:04:27,248 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 333 treesize of output 285 [2024-11-13 15:04:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:27,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:04:27,286 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:04:27,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422569491] [2024-11-13 15:04:27,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422569491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:04:27,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:04:27,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:04:27,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047848220] [2024-11-13 15:04:27,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:04:27,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:04:27,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:04:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:04:27,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:04:31,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:04:31,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 556 transitions, 12420 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:31,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:04:31,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:04:31,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:04:38,685 INFO L124 PetriNetUnfolderBase]: 1689/4036 cut-off events. [2024-11-13 15:04:38,685 INFO L125 PetriNetUnfolderBase]: For 85392/85392 co-relation queries the response was YES. [2024-11-13 15:04:38,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28829 conditions, 4036 events. 1689/4036 cut-off events. For 85392/85392 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 30896 event pairs, 527 based on Foata normal form. 2/4038 useless extension candidates. Maximal degree in co-relation 28682. Up to 2642 conditions per place. [2024-11-13 15:04:38,747 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 422 selfloop transitions, 232 changer transitions 0/660 dead transitions. [2024-11-13 15:04:38,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 660 transitions, 15263 flow [2024-11-13 15:04:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:04:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 15:04:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1174 transitions. [2024-11-13 15:04:38,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3557575757575758 [2024-11-13 15:04:38,749 INFO L175 Difference]: Start difference. First operand has 432 places, 556 transitions, 12420 flow. Second operand 25 states and 1174 transitions. [2024-11-13 15:04:38,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 660 transitions, 15263 flow [2024-11-13 15:04:39,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 660 transitions, 14943 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-11-13 15:04:39,630 INFO L231 Difference]: Finished difference. Result has 453 places, 589 transitions, 13665 flow [2024-11-13 15:04:39,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=12138, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=13665, PETRI_PLACES=453, PETRI_TRANSITIONS=589} [2024-11-13 15:04:39,631 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 331 predicate places. [2024-11-13 15:04:39,631 INFO L471 AbstractCegarLoop]: Abstraction has has 453 places, 589 transitions, 13665 flow [2024-11-13 15:04:39,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:39,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:04:39,632 INFO L204 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] [2024-11-13 15:04:39,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-13 15:04:39,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:39,836 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:04:39,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:39,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1004804966, now seen corresponding path program 9 times [2024-11-13 15:04:39,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:04:39,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942470319] [2024-11-13 15:04:39,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:04:39,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:39,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:39,839 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:39,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-13 15:04:40,323 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 15:04:40,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:04:40,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:04:40,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:40,349 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 [2024-11-13 15:04:40,408 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:04:40,409 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:04:40,409 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:04:40,410 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 24 treesize of output 33 [2024-11-13 15:04:41,392 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 66 treesize of output 53 [2024-11-13 15:04:41,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:04:42,029 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:04:42,037 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 125 treesize of output 97 [2024-11-13 15:04:42,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:04:42,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:04:42,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:04:42,546 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 333 treesize of output 285 [2024-11-13 15:04:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:42,594 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:04:42,594 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:04:42,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942470319] [2024-11-13 15:04:42,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942470319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:04:42,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:04:42,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:04:42,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092274969] [2024-11-13 15:04:42,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:04:42,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:04:42,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:04:42,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:04:42,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:04:46,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:04:46,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 589 transitions, 13665 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:46,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:04:46,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:04:46,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:04:54,777 INFO L124 PetriNetUnfolderBase]: 1806/4298 cut-off events. [2024-11-13 15:04:54,777 INFO L125 PetriNetUnfolderBase]: For 92581/92581 co-relation queries the response was YES. [2024-11-13 15:04:54,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31031 conditions, 4298 events. 1806/4298 cut-off events. For 92581/92581 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 33315 event pairs, 557 based on Foata normal form. 2/4300 useless extension candidates. Maximal degree in co-relation 30873. Up to 2774 conditions per place. [2024-11-13 15:04:54,837 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 434 selfloop transitions, 261 changer transitions 0/701 dead transitions. [2024-11-13 15:04:54,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 701 transitions, 16618 flow [2024-11-13 15:04:54,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:04:54,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 15:04:54,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1182 transitions. [2024-11-13 15:04:54,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35818181818181816 [2024-11-13 15:04:54,840 INFO L175 Difference]: Start difference. First operand has 453 places, 589 transitions, 13665 flow. Second operand 25 states and 1182 transitions. [2024-11-13 15:04:54,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 701 transitions, 16618 flow [2024-11-13 15:04:56,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 701 transitions, 16397 flow, removed 86 selfloop flow, removed 5 redundant places. [2024-11-13 15:04:56,022 INFO L231 Difference]: Finished difference. Result has 480 places, 620 transitions, 14988 flow [2024-11-13 15:04:56,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=13444, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=14988, PETRI_PLACES=480, PETRI_TRANSITIONS=620} [2024-11-13 15:04:56,023 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 358 predicate places. [2024-11-13 15:04:56,023 INFO L471 AbstractCegarLoop]: Abstraction has has 480 places, 620 transitions, 14988 flow [2024-11-13 15:04:56,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:56,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:04:56,023 INFO L204 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] [2024-11-13 15:04:56,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-13 15:04:56,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:56,224 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:04:56,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash -528855406, now seen corresponding path program 10 times [2024-11-13 15:04:56,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:04:56,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189804905] [2024-11-13 15:04:56,225 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:04:56,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:56,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:56,227 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:56,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-13 15:04:56,759 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:04:56,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:04:56,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:04:56,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:56,783 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 [2024-11-13 15:04:56,844 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:04:56,845 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:04:56,845 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:04:56,846 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 24 treesize of output 33 [2024-11-13 15:04:57,814 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 66 treesize of output 53 [2024-11-13 15:04:57,856 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:04:58,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:04:58,542 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 125 treesize of output 97 [2024-11-13 15:04:58,777 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:04:58,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:04:59,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:04:59,093 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 333 treesize of output 285 [2024-11-13 15:04:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:59,145 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:04:59,145 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:04:59,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189804905] [2024-11-13 15:04:59,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189804905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:04:59,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:04:59,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:04:59,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479834001] [2024-11-13 15:04:59,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:04:59,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:04:59,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:04:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:04:59,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:05:04,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 132 [2024-11-13 15:05:04,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 620 transitions, 14988 flow. Second operand has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:04,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:05:04,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 132 [2024-11-13 15:05:04,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:05:11,841 INFO L124 PetriNetUnfolderBase]: 1836/4400 cut-off events. [2024-11-13 15:05:11,841 INFO L125 PetriNetUnfolderBase]: For 100596/100596 co-relation queries the response was YES. [2024-11-13 15:05:11,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32196 conditions, 4400 events. 1836/4400 cut-off events. For 100596/100596 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 34452 event pairs, 486 based on Foata normal form. 1/4401 useless extension candidates. Maximal degree in co-relation 32029. Up to 2663 conditions per place. [2024-11-13 15:05:11,916 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 468 selfloop transitions, 253 changer transitions 0/727 dead transitions. [2024-11-13 15:05:11,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 727 transitions, 17484 flow [2024-11-13 15:05:11,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:05:11,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 15:05:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1256 transitions. [2024-11-13 15:05:11,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3806060606060606 [2024-11-13 15:05:11,918 INFO L175 Difference]: Start difference. First operand has 480 places, 620 transitions, 14988 flow. Second operand 25 states and 1256 transitions. [2024-11-13 15:05:11,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 727 transitions, 17484 flow [2024-11-13 15:05:12,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 727 transitions, 17084 flow, removed 114 selfloop flow, removed 10 redundant places. [2024-11-13 15:05:12,983 INFO L231 Difference]: Finished difference. Result has 501 places, 632 transitions, 15385 flow [2024-11-13 15:05:12,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=14588, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=15385, PETRI_PLACES=501, PETRI_TRANSITIONS=632} [2024-11-13 15:05:12,984 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 379 predicate places. [2024-11-13 15:05:12,984 INFO L471 AbstractCegarLoop]: Abstraction has has 501 places, 632 transitions, 15385 flow [2024-11-13 15:05:12,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:12,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:05:12,984 INFO L204 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] [2024-11-13 15:05:13,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-13 15:05:13,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:13,185 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:05:13,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:13,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1315980812, now seen corresponding path program 11 times [2024-11-13 15:05:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:05:13,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189594904] [2024-11-13 15:05:13,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:05:13,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:13,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:05:13,188 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:05:13,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-13 15:05:13,669 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:05:13,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:05:13,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:05:13,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:05:13,691 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 [2024-11-13 15:05:13,763 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:05:13,764 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:05:13,764 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:05:13,765 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 24 treesize of output 33 [2024-11-13 15:05:14,698 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 66 treesize of output 53 [2024-11-13 15:05:14,731 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:05:15,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:05:15,388 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 125 treesize of output 97 [2024-11-13 15:05:15,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:05:15,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:05:15,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:05:15,984 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 333 treesize of output 285 [2024-11-13 15:05:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:16,024 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:05:16,024 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:05:16,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189594904] [2024-11-13 15:05:16,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189594904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:05:16,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:05:16,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:05:16,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586988244] [2024-11-13 15:05:16,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:05:16,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:05:16,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:05:16,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:05:16,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:05:23,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 132 [2024-11-13 15:05:23,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 632 transitions, 15385 flow. Second operand has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:23,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:05:23,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 132 [2024-11-13 15:05:23,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:05:31,704 INFO L124 PetriNetUnfolderBase]: 1854/4457 cut-off events. [2024-11-13 15:05:31,704 INFO L125 PetriNetUnfolderBase]: For 107188/107188 co-relation queries the response was YES. [2024-11-13 15:05:31,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33118 conditions, 4457 events. 1854/4457 cut-off events. For 107188/107188 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 35090 event pairs, 592 based on Foata normal form. 1/4458 useless extension candidates. Maximal degree in co-relation 32943. Up to 2893 conditions per place. [2024-11-13 15:05:31,799 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 459 selfloop transitions, 248 changer transitions 0/713 dead transitions. [2024-11-13 15:05:31,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 713 transitions, 17605 flow [2024-11-13 15:05:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 15:05:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 15:05:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1290 transitions. [2024-11-13 15:05:31,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3758741258741259 [2024-11-13 15:05:31,801 INFO L175 Difference]: Start difference. First operand has 501 places, 632 transitions, 15385 flow. Second operand 26 states and 1290 transitions. [2024-11-13 15:05:31,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 713 transitions, 17605 flow [2024-11-13 15:05:33,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 713 transitions, 17125 flow, removed 49 selfloop flow, removed 16 redundant places. [2024-11-13 15:05:33,034 INFO L231 Difference]: Finished difference. Result has 515 places, 640 transitions, 15616 flow [2024-11-13 15:05:33,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=14920, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=15616, PETRI_PLACES=515, PETRI_TRANSITIONS=640} [2024-11-13 15:05:33,034 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 393 predicate places. [2024-11-13 15:05:33,034 INFO L471 AbstractCegarLoop]: Abstraction has has 515 places, 640 transitions, 15616 flow [2024-11-13 15:05:33,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:33,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:05:33,035 INFO L204 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] [2024-11-13 15:05:33,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-11-13 15:05:33,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:33,235 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:05:33,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash 515346734, now seen corresponding path program 12 times [2024-11-13 15:05:33,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:05:33,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934126141] [2024-11-13 15:05:33,236 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:05:33,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:33,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:05:33,238 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:05:33,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-13 15:05:33,775 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-13 15:05:33,775 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:05:33,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:05:33,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:05:33,800 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 [2024-11-13 15:05:33,861 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:05:33,862 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:05:33,862 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:05:33,863 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 24 treesize of output 33 [2024-11-13 15:05:35,145 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 66 treesize of output 53 [2024-11-13 15:05:35,185 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:05:35,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:05:35,956 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 125 treesize of output 97 [2024-11-13 15:05:36,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:05:36,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:05:36,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:05:36,447 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 333 treesize of output 285 [2024-11-13 15:05:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:36,492 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:05:36,492 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:05:36,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934126141] [2024-11-13 15:05:36,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934126141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:05:36,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:05:36,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:05:36,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717618444] [2024-11-13 15:05:36,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:05:36,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:05:36,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:05:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:05:36,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:05:41,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 132 [2024-11-13 15:05:41,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 640 transitions, 15616 flow. Second operand has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:41,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:05:41,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 132 [2024-11-13 15:05:41,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:05:49,853 INFO L124 PetriNetUnfolderBase]: 1866/4499 cut-off events. [2024-11-13 15:05:49,854 INFO L125 PetriNetUnfolderBase]: For 111628/111628 co-relation queries the response was YES. [2024-11-13 15:05:50,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33511 conditions, 4499 events. 1866/4499 cut-off events. For 111628/111628 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 35556 event pairs, 607 based on Foata normal form. 1/4500 useless extension candidates. Maximal degree in co-relation 33331. Up to 2935 conditions per place. [2024-11-13 15:05:50,065 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 464 selfloop transitions, 249 changer transitions 0/719 dead transitions. [2024-11-13 15:05:50,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 719 transitions, 17808 flow [2024-11-13 15:05:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 15:05:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 15:05:50,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1293 transitions. [2024-11-13 15:05:50,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3767482517482518 [2024-11-13 15:05:50,071 INFO L175 Difference]: Start difference. First operand has 515 places, 640 transitions, 15616 flow. Second operand 26 states and 1293 transitions. [2024-11-13 15:05:50,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 719 transitions, 17808 flow [2024-11-13 15:05:51,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 719 transitions, 17271 flow, removed 41 selfloop flow, removed 19 redundant places. [2024-11-13 15:05:51,146 INFO L231 Difference]: Finished difference. Result has 527 places, 648 transitions, 15807 flow [2024-11-13 15:05:51,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=15087, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=15807, PETRI_PLACES=527, PETRI_TRANSITIONS=648} [2024-11-13 15:05:51,147 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 405 predicate places. [2024-11-13 15:05:51,147 INFO L471 AbstractCegarLoop]: Abstraction has has 527 places, 648 transitions, 15807 flow [2024-11-13 15:05:51,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:51,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:05:51,147 INFO L204 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] [2024-11-13 15:05:51,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-13 15:05:51,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:51,348 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:05:51,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:51,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1401617390, now seen corresponding path program 13 times [2024-11-13 15:05:51,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:05:51,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554564366] [2024-11-13 15:05:51,348 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:05:51,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:51,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:05:51,350 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:05:51,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-13 15:05:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:51,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 15:05:51,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:05:51,905 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:05:51,906 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:05:51,906 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:05:51,907 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 24 treesize of output 33 [2024-11-13 15:05:52,724 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 66 treesize of output 53 [2024-11-13 15:05:53,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:05:53,248 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 125 treesize of output 97 [2024-11-13 15:05:53,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:05:53,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:05:53,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:05:53,669 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 333 treesize of output 285 [2024-11-13 15:05:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:53,717 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:05:53,717 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:05:53,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554564366] [2024-11-13 15:05:53,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554564366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:05:53,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:05:53,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:05:53,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165148854] [2024-11-13 15:05:53,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:05:53,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:05:53,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:05:53,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:05:53,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:05:59,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-13 15:05:59,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 648 transitions, 15807 flow. Second operand has 18 states, 18 states have (on average 58.22222222222222) internal successors, (1048), 18 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:59,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:05:59,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-13 15:05:59,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:07,453 INFO L124 PetriNetUnfolderBase]: 1884/4582 cut-off events. [2024-11-13 15:06:07,453 INFO L125 PetriNetUnfolderBase]: For 113835/113835 co-relation queries the response was YES. [2024-11-13 15:06:07,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34065 conditions, 4582 events. 1884/4582 cut-off events. For 113835/113835 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 36518 event pairs, 610 based on Foata normal form. 1/4583 useless extension candidates. Maximal degree in co-relation 33879. Up to 2880 conditions per place. [2024-11-13 15:06:07,568 INFO L140 encePairwiseOnDemand]: 110/132 looper letters, 493 selfloop transitions, 238 changer transitions 0/737 dead transitions. [2024-11-13 15:06:07,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 737 transitions, 18175 flow [2024-11-13 15:06:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 15:06:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-13 15:06:07,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1457 transitions. [2024-11-13 15:06:07,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47990777338603424 [2024-11-13 15:06:07,571 INFO L175 Difference]: Start difference. First operand has 527 places, 648 transitions, 15807 flow. Second operand 23 states and 1457 transitions. [2024-11-13 15:06:07,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 737 transitions, 18175 flow [2024-11-13 15:06:08,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 737 transitions, 17703 flow, removed 44 selfloop flow, removed 13 redundant places. [2024-11-13 15:06:08,732 INFO L231 Difference]: Finished difference. Result has 543 places, 661 transitions, 16182 flow [2024-11-13 15:06:08,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=15341, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=16182, PETRI_PLACES=543, PETRI_TRANSITIONS=661} [2024-11-13 15:06:08,733 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 421 predicate places. [2024-11-13 15:06:08,733 INFO L471 AbstractCegarLoop]: Abstraction has has 543 places, 661 transitions, 16182 flow [2024-11-13 15:06:08,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 58.22222222222222) internal successors, (1048), 18 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:06:08,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:08,733 INFO L204 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] [2024-11-13 15:06:08,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-13 15:06:08,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:08,934 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:06:08,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:08,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1004747130, now seen corresponding path program 14 times [2024-11-13 15:06:08,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:06:08,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777272359] [2024-11-13 15:06:08,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:06:08,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:08,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:08,936 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:08,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-13 15:06:09,503 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:06:09,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:06:09,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 15:06:09,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:09,603 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:06:09,603 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:06:09,604 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:06:09,605 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 24 treesize of output 33 [2024-11-13 15:06:10,574 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 66 treesize of output 53 [2024-11-13 15:06:10,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:06:11,190 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 125 treesize of output 97 [2024-11-13 15:06:11,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:06:11,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:06:11,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:06:11,607 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 333 treesize of output 285 [2024-11-13 15:06:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:11,648 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:06:11,648 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:06:11,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777272359] [2024-11-13 15:06:11,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777272359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:06:11,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:06:11,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:06:11,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340243205] [2024-11-13 15:06:11,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:06:11,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:06:11,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:06:11,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:06:11,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:06:18,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-13 15:06:18,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 661 transitions, 16182 flow. Second operand has 18 states, 18 states have (on average 58.22222222222222) internal successors, (1048), 18 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:06:18,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:18,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-13 15:06:18,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:26,038 INFO L124 PetriNetUnfolderBase]: 1902/4644 cut-off events. [2024-11-13 15:06:26,039 INFO L125 PetriNetUnfolderBase]: For 118063/118063 co-relation queries the response was YES. [2024-11-13 15:06:26,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34832 conditions, 4644 events. 1902/4644 cut-off events. For 118063/118063 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 37239 event pairs, 629 based on Foata normal form. 1/4645 useless extension candidates. Maximal degree in co-relation 34639. Up to 2939 conditions per place. [2024-11-13 15:06:26,166 INFO L140 encePairwiseOnDemand]: 110/132 looper letters, 499 selfloop transitions, 240 changer transitions 0/745 dead transitions. [2024-11-13 15:06:26,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 745 transitions, 18534 flow [2024-11-13 15:06:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 15:06:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-13 15:06:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1455 transitions. [2024-11-13 15:06:26,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4792490118577075 [2024-11-13 15:06:26,169 INFO L175 Difference]: Start difference. First operand has 543 places, 661 transitions, 16182 flow. Second operand 23 states and 1455 transitions. [2024-11-13 15:06:26,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 745 transitions, 18534 flow [2024-11-13 15:06:27,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 745 transitions, 18176 flow, removed 55 selfloop flow, removed 13 redundant places. [2024-11-13 15:06:27,398 INFO L231 Difference]: Finished difference. Result has 558 places, 670 transitions, 16623 flow [2024-11-13 15:06:27,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=15834, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=16623, PETRI_PLACES=558, PETRI_TRANSITIONS=670} [2024-11-13 15:06:27,399 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 436 predicate places. [2024-11-13 15:06:27,399 INFO L471 AbstractCegarLoop]: Abstraction has has 558 places, 670 transitions, 16623 flow [2024-11-13 15:06:27,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 58.22222222222222) internal successors, (1048), 18 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:06:27,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:27,399 INFO L204 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] [2024-11-13 15:06:27,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-13 15:06:27,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:27,600 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:06:27,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:27,600 INFO L85 PathProgramCache]: Analyzing trace with hash -871332938, now seen corresponding path program 15 times [2024-11-13 15:06:27,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:06:27,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585362291] [2024-11-13 15:06:27,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:06:27,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:27,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:27,603 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:27,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-13 15:06:28,142 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 15:06:28,142 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:06:28,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 15:06:28,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:28,228 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:06:28,229 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:06:28,229 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:06:28,230 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 24 treesize of output 33 [2024-11-13 15:06:29,145 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 66 treesize of output 53 [2024-11-13 15:06:29,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:06:29,717 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 125 treesize of output 97 [2024-11-13 15:06:29,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:06:29,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:06:30,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:06:30,103 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 333 treesize of output 285 [2024-11-13 15:06:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:30,143 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:06:30,143 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:06:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585362291] [2024-11-13 15:06:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585362291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:06:30,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:06:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:06:30,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913407073] [2024-11-13 15:06:30,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:06:30,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:06:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:06:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:06:30,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:06:35,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-13 15:06:35,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 670 transitions, 16623 flow. Second operand has 18 states, 18 states have (on average 58.22222222222222) internal successors, (1048), 18 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:06:35,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:35,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-13 15:06:35,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:06:44,849 INFO L124 PetriNetUnfolderBase]: 1914/4677 cut-off events. [2024-11-13 15:06:44,849 INFO L125 PetriNetUnfolderBase]: For 125754/125754 co-relation queries the response was YES. [2024-11-13 15:06:44,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35378 conditions, 4677 events. 1914/4677 cut-off events. For 125754/125754 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 37561 event pairs, 489 based on Foata normal form. 1/4678 useless extension candidates. Maximal degree in co-relation 35179. Up to 2728 conditions per place. [2024-11-13 15:06:44,985 INFO L140 encePairwiseOnDemand]: 110/132 looper letters, 517 selfloop transitions, 248 changer transitions 0/771 dead transitions. [2024-11-13 15:06:44,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 771 transitions, 19151 flow [2024-11-13 15:06:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 15:06:44,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-13 15:06:44,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1465 transitions. [2024-11-13 15:06:44,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48254281949934125 [2024-11-13 15:06:44,988 INFO L175 Difference]: Start difference. First operand has 558 places, 670 transitions, 16623 flow. Second operand 23 states and 1465 transitions. [2024-11-13 15:06:44,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 771 transitions, 19151 flow [2024-11-13 15:06:46,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 771 transitions, 18686 flow, removed 54 selfloop flow, removed 13 redundant places. [2024-11-13 15:06:46,314 INFO L231 Difference]: Finished difference. Result has 572 places, 678 transitions, 16928 flow [2024-11-13 15:06:46,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=16176, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=16928, PETRI_PLACES=572, PETRI_TRANSITIONS=678} [2024-11-13 15:06:46,318 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 450 predicate places. [2024-11-13 15:06:46,318 INFO L471 AbstractCegarLoop]: Abstraction has has 572 places, 678 transitions, 16928 flow [2024-11-13 15:06:46,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 58.22222222222222) internal successors, (1048), 18 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:06:46,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:06:46,319 INFO L204 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] [2024-11-13 15:06:46,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-13 15:06:46,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:46,522 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:06:46,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:06:46,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1133270472, now seen corresponding path program 16 times [2024-11-13 15:06:46,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:06:46,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290331027] [2024-11-13 15:06:46,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:06:46,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:06:46,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:06:46,525 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:06:46,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-13 15:06:47,052 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:06:47,052 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:06:47,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:06:47,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:06:47,074 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 [2024-11-13 15:06:47,139 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:06:47,139 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:06:47,140 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:06:47,140 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 24 treesize of output 33 [2024-11-13 15:06:48,068 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 66 treesize of output 53 [2024-11-13 15:06:48,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:06:48,874 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:06:48,881 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 125 treesize of output 97 [2024-11-13 15:06:49,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:06:49,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:06:49,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:06:49,367 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 333 treesize of output 285 [2024-11-13 15:06:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:06:49,418 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:06:49,418 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:06:49,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290331027] [2024-11-13 15:06:49,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290331027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:06:49,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:06:49,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:06:49,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136527005] [2024-11-13 15:06:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:06:49,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:06:49,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:06:49,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:06:49,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:06:53,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:06:53,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 678 transitions, 16928 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:06:53,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:06:53,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:06:53,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:07:01,798 INFO L124 PetriNetUnfolderBase]: 2031/4939 cut-off events. [2024-11-13 15:07:01,798 INFO L125 PetriNetUnfolderBase]: For 137553/137553 co-relation queries the response was YES. [2024-11-13 15:07:01,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37631 conditions, 4939 events. 2031/4939 cut-off events. For 137553/137553 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 40154 event pairs, 726 based on Foata normal form. 2/4941 useless extension candidates. Maximal degree in co-relation 37427. Up to 3418 conditions per place. [2024-11-13 15:07:01,896 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 564 selfloop transitions, 216 changer transitions 0/786 dead transitions. [2024-11-13 15:07:01,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 786 transitions, 20118 flow [2024-11-13 15:07:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 15:07:01,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-13 15:07:01,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1088 transitions. [2024-11-13 15:07:01,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3583662714097497 [2024-11-13 15:07:01,898 INFO L175 Difference]: Start difference. First operand has 572 places, 678 transitions, 16928 flow. Second operand 23 states and 1088 transitions. [2024-11-13 15:07:01,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 786 transitions, 20118 flow [2024-11-13 15:07:03,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 786 transitions, 19588 flow, removed 53 selfloop flow, removed 17 redundant places. [2024-11-13 15:07:03,473 INFO L231 Difference]: Finished difference. Result has 585 places, 709 transitions, 17944 flow [2024-11-13 15:07:03,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=16430, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=17944, PETRI_PLACES=585, PETRI_TRANSITIONS=709} [2024-11-13 15:07:03,474 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 463 predicate places. [2024-11-13 15:07:03,474 INFO L471 AbstractCegarLoop]: Abstraction has has 585 places, 709 transitions, 17944 flow [2024-11-13 15:07:03,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:03,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:07:03,474 INFO L204 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] [2024-11-13 15:07:03,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-11-13 15:07:03,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:03,675 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:07:03,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:03,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1505704514, now seen corresponding path program 17 times [2024-11-13 15:07:03,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:03,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168135669] [2024-11-13 15:07:03,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:07:03,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:03,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:03,678 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:03,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-13 15:07:04,192 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:07:04,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:07:04,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:07:04,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:04,219 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 [2024-11-13 15:07:04,296 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:07:04,296 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:07:04,296 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:07:04,297 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 24 treesize of output 33 [2024-11-13 15:07:05,065 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 66 treesize of output 53 [2024-11-13 15:07:05,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:07:05,892 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:07:05,906 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 125 treesize of output 97 [2024-11-13 15:07:06,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:07:06,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:07:06,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:07:06,336 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 333 treesize of output 285 [2024-11-13 15:07:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:06,374 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:06,374 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:06,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168135669] [2024-11-13 15:07:06,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168135669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:06,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:06,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:07:06,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032160957] [2024-11-13 15:07:06,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:06,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:07:06,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:07:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:07:11,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:07:11,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 709 transitions, 17944 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:11,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:07:11,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:07:11,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:07:19,360 INFO L124 PetriNetUnfolderBase]: 2133/5180 cut-off events. [2024-11-13 15:07:19,361 INFO L125 PetriNetUnfolderBase]: For 147600/147604 co-relation queries the response was YES. [2024-11-13 15:07:19,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39640 conditions, 5180 events. 2133/5180 cut-off events. For 147600/147604 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 42538 event pairs, 767 based on Foata normal form. 6/5186 useless extension candidates. Maximal degree in co-relation 39428. Up to 3604 conditions per place. [2024-11-13 15:07:19,460 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 574 selfloop transitions, 222 changer transitions 0/802 dead transitions. [2024-11-13 15:07:19,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 802 transitions, 20999 flow [2024-11-13 15:07:19,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 15:07:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 15:07:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1124 transitions. [2024-11-13 15:07:19,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3547979797979798 [2024-11-13 15:07:19,462 INFO L175 Difference]: Start difference. First operand has 585 places, 709 transitions, 17944 flow. Second operand 24 states and 1124 transitions. [2024-11-13 15:07:19,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 802 transitions, 20999 flow [2024-11-13 15:07:20,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 802 transitions, 20630 flow, removed 144 selfloop flow, removed 8 redundant places. [2024-11-13 15:07:20,934 INFO L231 Difference]: Finished difference. Result has 610 places, 736 transitions, 19062 flow [2024-11-13 15:07:20,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=17576, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=19062, PETRI_PLACES=610, PETRI_TRANSITIONS=736} [2024-11-13 15:07:20,935 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 488 predicate places. [2024-11-13 15:07:20,935 INFO L471 AbstractCegarLoop]: Abstraction has has 610 places, 736 transitions, 19062 flow [2024-11-13 15:07:20,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:20,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:07:20,936 INFO L204 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] [2024-11-13 15:07:20,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-13 15:07:21,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:21,136 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:07:21,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:21,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1966392850, now seen corresponding path program 18 times [2024-11-13 15:07:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:21,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247264638] [2024-11-13 15:07:21,137 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:07:21,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:21,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:21,139 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:21,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-13 15:07:21,677 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-13 15:07:21,677 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:07:21,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:07:21,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:21,701 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 [2024-11-13 15:07:21,759 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:07:21,760 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:07:21,760 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:07:21,761 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 24 treesize of output 33 [2024-11-13 15:07:22,734 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 66 treesize of output 53 [2024-11-13 15:07:22,790 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:07:23,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:07:23,759 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 125 treesize of output 97 [2024-11-13 15:07:23,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:07:23,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:07:24,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:07:24,184 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 333 treesize of output 285 [2024-11-13 15:07:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:24,229 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:24,229 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:24,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247264638] [2024-11-13 15:07:24,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247264638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:24,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:24,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:07:24,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013001738] [2024-11-13 15:07:24,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:24,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:07:24,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:24,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:07:24,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:07:29,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 132 [2024-11-13 15:07:29,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 736 transitions, 19062 flow. Second operand has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:29,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:07:29,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 132 [2024-11-13 15:07:29,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:07:38,740 INFO L124 PetriNetUnfolderBase]: 2155/5249 cut-off events. [2024-11-13 15:07:38,740 INFO L125 PetriNetUnfolderBase]: For 157555/157555 co-relation queries the response was YES. [2024-11-13 15:07:38,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40409 conditions, 5249 events. 2155/5249 cut-off events. For 157555/157555 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 43274 event pairs, 656 based on Foata normal form. 1/5250 useless extension candidates. Maximal degree in co-relation 40186. Up to 3607 conditions per place. [2024-11-13 15:07:38,881 INFO L140 encePairwiseOnDemand]: 110/132 looper letters, 595 selfloop transitions, 219 changer transitions 0/820 dead transitions. [2024-11-13 15:07:38,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 820 transitions, 21463 flow [2024-11-13 15:07:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 15:07:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-13 15:07:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1016 transitions. [2024-11-13 15:07:38,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-11-13 15:07:38,883 INFO L175 Difference]: Start difference. First operand has 610 places, 736 transitions, 19062 flow. Second operand 20 states and 1016 transitions. [2024-11-13 15:07:38,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 820 transitions, 21463 flow [2024-11-13 15:07:40,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 820 transitions, 21098 flow, removed 155 selfloop flow, removed 5 redundant places. [2024-11-13 15:07:40,551 INFO L231 Difference]: Finished difference. Result has 629 places, 743 transitions, 19350 flow [2024-11-13 15:07:40,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=18697, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=19350, PETRI_PLACES=629, PETRI_TRANSITIONS=743} [2024-11-13 15:07:40,552 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 507 predicate places. [2024-11-13 15:07:40,552 INFO L471 AbstractCegarLoop]: Abstraction has has 629 places, 743 transitions, 19350 flow [2024-11-13 15:07:40,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:40,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:07:40,552 INFO L204 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] [2024-11-13 15:07:40,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-13 15:07:40,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:40,753 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:07:40,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:07:40,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1887361860, now seen corresponding path program 19 times [2024-11-13 15:07:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:07:40,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725573158] [2024-11-13 15:07:40,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:07:40,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:07:40,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:40,756 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:07:40,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-13 15:07:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:07:41,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:07:41,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:07:41,483 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 [2024-11-13 15:07:41,580 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:07:41,581 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:07:41,581 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:07:41,582 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 24 treesize of output 33 [2024-11-13 15:07:42,644 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 66 treesize of output 53 [2024-11-13 15:07:42,680 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:07:43,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:07:43,503 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 125 treesize of output 97 [2024-11-13 15:07:43,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:07:43,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:07:43,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:07:43,978 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 333 treesize of output 285 [2024-11-13 15:07:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:07:44,126 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:07:44,126 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:07:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725573158] [2024-11-13 15:07:44,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725573158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:07:44,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:07:44,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:07:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712089293] [2024-11-13 15:07:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:07:44,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:07:44,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:07:44,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:07:44,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:07:50,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 132 [2024-11-13 15:07:50,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 743 transitions, 19350 flow. Second operand has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:07:50,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:07:50,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 132 [2024-11-13 15:07:50,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:08:00,231 INFO L124 PetriNetUnfolderBase]: 2174/5312 cut-off events. [2024-11-13 15:08:00,231 INFO L125 PetriNetUnfolderBase]: For 164377/164377 co-relation queries the response was YES. [2024-11-13 15:08:00,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40986 conditions, 5312 events. 2174/5312 cut-off events. For 164377/164377 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 44058 event pairs, 801 based on Foata normal form. 1/5313 useless extension candidates. Maximal degree in co-relation 40757. Up to 3679 conditions per place. [2024-11-13 15:08:00,351 INFO L140 encePairwiseOnDemand]: 110/132 looper letters, 594 selfloop transitions, 216 changer transitions 0/816 dead transitions. [2024-11-13 15:08:00,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 816 transitions, 21650 flow [2024-11-13 15:08:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 15:08:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-13 15:08:00,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1056 transitions. [2024-11-13 15:08:00,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-11-13 15:08:00,353 INFO L175 Difference]: Start difference. First operand has 629 places, 743 transitions, 19350 flow. Second operand 21 states and 1056 transitions. [2024-11-13 15:08:00,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 816 transitions, 21650 flow [2024-11-13 15:08:01,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 816 transitions, 21190 flow, removed 62 selfloop flow, removed 13 redundant places. [2024-11-13 15:08:01,834 INFO L231 Difference]: Finished difference. Result has 642 places, 751 transitions, 19549 flow [2024-11-13 15:08:01,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=18896, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=19549, PETRI_PLACES=642, PETRI_TRANSITIONS=751} [2024-11-13 15:08:01,835 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 520 predicate places. [2024-11-13 15:08:01,835 INFO L471 AbstractCegarLoop]: Abstraction has has 642 places, 751 transitions, 19549 flow [2024-11-13 15:08:01,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:01,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:08:01,835 INFO L204 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] [2024-11-13 15:08:01,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2024-11-13 15:08:02,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:02,036 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:08:02,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:02,036 INFO L85 PathProgramCache]: Analyzing trace with hash 688482538, now seen corresponding path program 20 times [2024-11-13 15:08:02,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:08:02,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319106478] [2024-11-13 15:08:02,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:08:02,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:02,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:08:02,038 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:08:02,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-11-13 15:08:02,629 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:08:02,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:08:02,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:08:02,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:02,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:08:02,727 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:08:02,728 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:08:02,728 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:08:02,729 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 24 treesize of output 33 [2024-11-13 15:08:03,771 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 66 treesize of output 53 [2024-11-13 15:08:03,809 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:08:04,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:08:04,669 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 125 treesize of output 97 [2024-11-13 15:08:04,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:08:04,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:08:05,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:08:05,155 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 333 treesize of output 285 [2024-11-13 15:08:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:05,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:08:05,201 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:08:05,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319106478] [2024-11-13 15:08:05,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319106478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:05,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:05,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:08:05,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460499701] [2024-11-13 15:08:05,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:05,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:08:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:08:05,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:08:05,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:08:13,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 132 [2024-11-13 15:08:13,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 751 transitions, 19549 flow. Second operand has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:13,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:08:13,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 132 [2024-11-13 15:08:13,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:08:23,515 INFO L124 PetriNetUnfolderBase]: 2196/5382 cut-off events. [2024-11-13 15:08:23,515 INFO L125 PetriNetUnfolderBase]: For 168709/168709 co-relation queries the response was YES. [2024-11-13 15:08:23,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41535 conditions, 5382 events. 2196/5382 cut-off events. For 168709/168709 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 44913 event pairs, 783 based on Foata normal form. 1/5383 useless extension candidates. Maximal degree in co-relation 41300. Up to 3683 conditions per place. [2024-11-13 15:08:23,664 INFO L140 encePairwiseOnDemand]: 110/132 looper letters, 612 selfloop transitions, 222 changer transitions 0/840 dead transitions. [2024-11-13 15:08:23,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 662 places, 840 transitions, 22061 flow [2024-11-13 15:08:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 15:08:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-13 15:08:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1066 transitions. [2024-11-13 15:08:23,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38455988455988455 [2024-11-13 15:08:23,666 INFO L175 Difference]: Start difference. First operand has 642 places, 751 transitions, 19549 flow. Second operand 21 states and 1066 transitions. [2024-11-13 15:08:23,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 662 places, 840 transitions, 22061 flow [2024-11-13 15:08:25,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 840 transitions, 21585 flow, removed 58 selfloop flow, removed 11 redundant places. [2024-11-13 15:08:25,242 INFO L231 Difference]: Finished difference. Result has 656 places, 759 transitions, 19773 flow [2024-11-13 15:08:25,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=19079, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=19773, PETRI_PLACES=656, PETRI_TRANSITIONS=759} [2024-11-13 15:08:25,243 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 534 predicate places. [2024-11-13 15:08:25,243 INFO L471 AbstractCegarLoop]: Abstraction has has 656 places, 759 transitions, 19773 flow [2024-11-13 15:08:25,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:25,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:08:25,243 INFO L204 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] [2024-11-13 15:08:25,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-11-13 15:08:25,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:25,448 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:08:25,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:25,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1886625150, now seen corresponding path program 21 times [2024-11-13 15:08:25,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:08:25,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380066521] [2024-11-13 15:08:25,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:08:25,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:25,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:08:25,451 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:08:25,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-13 15:08:26,109 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 15:08:26,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:08:26,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:08:26,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:26,260 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 [2024-11-13 15:08:26,339 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:08:26,340 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:08:26,340 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:08:26,341 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 24 treesize of output 33 [2024-11-13 15:08:27,244 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 66 treesize of output 53 [2024-11-13 15:08:27,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:08:28,149 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:08:28,166 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 125 treesize of output 97 [2024-11-13 15:08:28,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:08:28,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:08:28,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:08:28,627 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 333 treesize of output 285 [2024-11-13 15:08:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:28,670 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:08:28,670 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:08:28,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380066521] [2024-11-13 15:08:28,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380066521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:28,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:28,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:08:28,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23768036] [2024-11-13 15:08:28,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:28,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:08:28,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:08:28,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:08:28,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:08:33,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:08:33,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 759 transitions, 19773 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:33,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:08:33,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:08:33,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:08:42,995 INFO L124 PetriNetUnfolderBase]: 2214/5431 cut-off events. [2024-11-13 15:08:42,995 INFO L125 PetriNetUnfolderBase]: For 171392/171392 co-relation queries the response was YES. [2024-11-13 15:08:43,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42157 conditions, 5431 events. 2214/5431 cut-off events. For 171392/171392 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 45472 event pairs, 803 based on Foata normal form. 2/5433 useless extension candidates. Maximal degree in co-relation 41917. Up to 3824 conditions per place. [2024-11-13 15:08:43,099 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 607 selfloop transitions, 238 changer transitions 0/851 dead transitions. [2024-11-13 15:08:43,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 851 transitions, 22715 flow [2024-11-13 15:08:43,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 15:08:43,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 15:08:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1132 transitions. [2024-11-13 15:08:43,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3573232323232323 [2024-11-13 15:08:43,102 INFO L175 Difference]: Start difference. First operand has 656 places, 759 transitions, 19773 flow. Second operand 24 states and 1132 transitions. [2024-11-13 15:08:43,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 851 transitions, 22715 flow [2024-11-13 15:08:44,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 665 places, 851 transitions, 22176 flow, removed 69 selfloop flow, removed 14 redundant places. [2024-11-13 15:08:44,913 INFO L231 Difference]: Finished difference. Result has 673 places, 777 transitions, 20460 flow [2024-11-13 15:08:44,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=19248, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=20460, PETRI_PLACES=673, PETRI_TRANSITIONS=777} [2024-11-13 15:08:44,914 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 551 predicate places. [2024-11-13 15:08:44,914 INFO L471 AbstractCegarLoop]: Abstraction has has 673 places, 777 transitions, 20460 flow [2024-11-13 15:08:44,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:44,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:08:44,915 INFO L204 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] [2024-11-13 15:08:44,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-11-13 15:08:45,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:45,115 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:08:45,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:45,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1568740882, now seen corresponding path program 22 times [2024-11-13 15:08:45,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:08:45,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031589344] [2024-11-13 15:08:45,116 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:08:45,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:08:45,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:08:45,118 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:08:45,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-11-13 15:08:45,741 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:08:45,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:08:45,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:08:45,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:08:45,769 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 [2024-11-13 15:08:45,851 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:08:45,852 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:08:45,852 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:08:45,853 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 24 treesize of output 33 [2024-11-13 15:08:46,855 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 66 treesize of output 53 [2024-11-13 15:08:46,881 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:08:47,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:08:47,732 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 125 treesize of output 97 [2024-11-13 15:08:47,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:08:47,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:08:48,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:08:48,273 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 333 treesize of output 285 [2024-11-13 15:08:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:48,319 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:08:48,319 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:08:48,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031589344] [2024-11-13 15:08:48,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031589344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:48,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:48,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:08:48,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288918082] [2024-11-13 15:08:48,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:48,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:08:48,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:08:48,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:08:48,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:08:53,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 132 [2024-11-13 15:08:53,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 777 transitions, 20460 flow. Second operand has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:53,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:08:53,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 132 [2024-11-13 15:08:53,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:09:04,297 INFO L124 PetriNetUnfolderBase]: 2232/5492 cut-off events. [2024-11-13 15:09:04,297 INFO L125 PetriNetUnfolderBase]: For 176002/176006 co-relation queries the response was YES. [2024-11-13 15:09:04,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42738 conditions, 5492 events. 2232/5492 cut-off events. For 176002/176006 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 46162 event pairs, 796 based on Foata normal form. 5/5497 useless extension candidates. Maximal degree in co-relation 42490. Up to 3747 conditions per place. [2024-11-13 15:09:04,420 INFO L140 encePairwiseOnDemand]: 110/132 looper letters, 628 selfloop transitions, 231 changer transitions 0/865 dead transitions. [2024-11-13 15:09:04,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 865 transitions, 23048 flow [2024-11-13 15:09:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:09:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-13 15:09:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1113 transitions. [2024-11-13 15:09:04,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38326446280991733 [2024-11-13 15:09:04,422 INFO L175 Difference]: Start difference. First operand has 673 places, 777 transitions, 20460 flow. Second operand 22 states and 1113 transitions. [2024-11-13 15:09:04,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 865 transitions, 23048 flow [2024-11-13 15:09:06,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 865 transitions, 22471 flow, removed 196 selfloop flow, removed 13 redundant places. [2024-11-13 15:09:06,143 INFO L231 Difference]: Finished difference. Result has 687 places, 784 transitions, 20592 flow [2024-11-13 15:09:06,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=19883, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=20592, PETRI_PLACES=687, PETRI_TRANSITIONS=784} [2024-11-13 15:09:06,144 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 565 predicate places. [2024-11-13 15:09:06,144 INFO L471 AbstractCegarLoop]: Abstraction has has 687 places, 784 transitions, 20592 flow [2024-11-13 15:09:06,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:06,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:09:06,144 INFO L204 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] [2024-11-13 15:09:06,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:06,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:06,345 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:09:06,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2051719198, now seen corresponding path program 23 times [2024-11-13 15:09:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:09:06,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171858954] [2024-11-13 15:09:06,345 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:09:06,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:06,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:06,347 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:09:06,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-11-13 15:09:06,999 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:09:06,999 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:09:07,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:09:07,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:07,025 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 [2024-11-13 15:09:07,099 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:09:07,099 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:09:07,100 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:09:07,100 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 24 treesize of output 33 [2024-11-13 15:09:08,046 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 66 treesize of output 53 [2024-11-13 15:09:08,085 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:09:08,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:09:08,890 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 125 treesize of output 97 [2024-11-13 15:09:09,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:09:09,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:09:09,329 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:09:09,329 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 333 treesize of output 285 [2024-11-13 15:09:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:09,372 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:09:09,373 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:09:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171858954] [2024-11-13 15:09:09,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171858954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:09,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:09,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:09:09,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989706678] [2024-11-13 15:09:09,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:09,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:09:09,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:09:09,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:09:09,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:09:17,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 132 [2024-11-13 15:09:17,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 784 transitions, 20592 flow. Second operand has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:17,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:09:17,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 132 [2024-11-13 15:09:17,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:09:27,097 INFO L124 PetriNetUnfolderBase]: 2250/5555 cut-off events. [2024-11-13 15:09:27,097 INFO L125 PetriNetUnfolderBase]: For 184325/184325 co-relation queries the response was YES. [2024-11-13 15:09:27,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43186 conditions, 5555 events. 2250/5555 cut-off events. For 184325/184325 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 46931 event pairs, 843 based on Foata normal form. 1/5556 useless extension candidates. Maximal degree in co-relation 42935. Up to 3899 conditions per place. [2024-11-13 15:09:27,368 INFO L140 encePairwiseOnDemand]: 110/132 looper letters, 625 selfloop transitions, 226 changer transitions 0/857 dead transitions. [2024-11-13 15:09:27,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 857 transitions, 23053 flow [2024-11-13 15:09:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:09:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-13 15:09:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1103 transitions. [2024-11-13 15:09:27,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3798209366391185 [2024-11-13 15:09:27,370 INFO L175 Difference]: Start difference. First operand has 687 places, 784 transitions, 20592 flow. Second operand 22 states and 1103 transitions. [2024-11-13 15:09:27,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 857 transitions, 23053 flow [2024-11-13 15:09:29,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 857 transitions, 22423 flow, removed 90 selfloop flow, removed 17 redundant places. [2024-11-13 15:09:29,405 INFO L231 Difference]: Finished difference. Result has 696 places, 791 transitions, 20669 flow [2024-11-13 15:09:29,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=19982, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=20669, PETRI_PLACES=696, PETRI_TRANSITIONS=791} [2024-11-13 15:09:29,406 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 574 predicate places. [2024-11-13 15:09:29,406 INFO L471 AbstractCegarLoop]: Abstraction has has 696 places, 791 transitions, 20669 flow [2024-11-13 15:09:29,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:29,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:09:29,407 INFO L204 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] [2024-11-13 15:09:29,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-11-13 15:09:29,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:29,610 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:09:29,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:29,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1144999634, now seen corresponding path program 24 times [2024-11-13 15:09:29,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:09:29,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875009073] [2024-11-13 15:09:29,611 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:09:29,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:29,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:29,614 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:09:29,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-11-13 15:09:30,259 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-13 15:09:30,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:09:30,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:09:30,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:30,284 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 [2024-11-13 15:09:30,355 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:09:30,355 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:09:30,356 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:09:30,357 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 24 treesize of output 33 [2024-11-13 15:09:31,382 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 66 treesize of output 53 [2024-11-13 15:09:31,411 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:09:32,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:09:32,302 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 125 treesize of output 97 [2024-11-13 15:09:32,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:09:32,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:09:32,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:09:32,869 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 333 treesize of output 285 [2024-11-13 15:09:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:32,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:09:32,920 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:09:32,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875009073] [2024-11-13 15:09:32,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875009073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:32,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:32,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:09:32,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914918221] [2024-11-13 15:09:32,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:32,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:09:32,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:09:32,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:09:32,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:09:37,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 132 [2024-11-13 15:09:37,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 791 transitions, 20669 flow. Second operand has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:37,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:09:37,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 132 [2024-11-13 15:09:37,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:09:47,019 INFO L124 PetriNetUnfolderBase]: 2250/5553 cut-off events. [2024-11-13 15:09:47,019 INFO L125 PetriNetUnfolderBase]: For 184033/184033 co-relation queries the response was YES. [2024-11-13 15:09:47,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43016 conditions, 5553 events. 2250/5553 cut-off events. For 184033/184033 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 46887 event pairs, 844 based on Foata normal form. 1/5554 useless extension candidates. Maximal degree in co-relation 42763. Up to 3899 conditions per place. [2024-11-13 15:09:47,166 INFO L140 encePairwiseOnDemand]: 110/132 looper letters, 627 selfloop transitions, 230 changer transitions 0/863 dead transitions. [2024-11-13 15:09:47,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 863 transitions, 23109 flow [2024-11-13 15:09:47,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:09:47,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-13 15:09:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1103 transitions. [2024-11-13 15:09:47,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3798209366391185 [2024-11-13 15:09:47,168 INFO L175 Difference]: Start difference. First operand has 696 places, 791 transitions, 20669 flow. Second operand 22 states and 1103 transitions. [2024-11-13 15:09:47,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 863 transitions, 23109 flow [2024-11-13 15:09:49,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 863 transitions, 22703 flow, removed 71 selfloop flow, removed 12 redundant places. [2024-11-13 15:09:49,388 INFO L231 Difference]: Finished difference. Result has 711 places, 798 transitions, 20989 flow [2024-11-13 15:09:49,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=20271, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=20989, PETRI_PLACES=711, PETRI_TRANSITIONS=798} [2024-11-13 15:09:49,389 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 589 predicate places. [2024-11-13 15:09:49,389 INFO L471 AbstractCegarLoop]: Abstraction has has 711 places, 798 transitions, 20989 flow [2024-11-13 15:09:49,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:49,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:09:49,390 INFO L204 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] [2024-11-13 15:09:49,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-11-13 15:09:49,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:49,590 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:09:49,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:49,591 INFO L85 PathProgramCache]: Analyzing trace with hash -613219626, now seen corresponding path program 25 times [2024-11-13 15:09:49,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:09:49,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625238710] [2024-11-13 15:09:49,595 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:09:49,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:49,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:49,597 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:09:49,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-11-13 15:09:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:50,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:09:50,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:50,221 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 [2024-11-13 15:09:50,298 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:09:50,298 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:09:50,299 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:09:50,300 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 24 treesize of output 33 [2024-11-13 15:09:51,499 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 69 treesize of output 45 [2024-11-13 15:09:51,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 81 [2024-11-13 15:09:51,880 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:09:51,886 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 114 treesize of output 101 [2024-11-13 15:09:52,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:09:52,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 209 treesize of output 140 [2024-11-13 15:09:52,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:09:52,415 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 341 treesize of output 289 [2024-11-13 15:09:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:52,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:09:52,458 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:09:52,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625238710] [2024-11-13 15:09:52,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625238710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:52,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:52,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-13 15:09:52,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93695529] [2024-11-13 15:09:52,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:52,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:09:52,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:09:52,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:09:52,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:09:56,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:09:56,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 798 transitions, 20989 flow. Second operand has 17 states, 17 states have (on average 42.35294117647059) internal successors, (720), 17 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:56,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:09:56,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:09:56,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:10:06,175 INFO L124 PetriNetUnfolderBase]: 2250/5532 cut-off events. [2024-11-13 15:10:06,175 INFO L125 PetriNetUnfolderBase]: For 189900/189900 co-relation queries the response was YES. [2024-11-13 15:10:06,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43111 conditions, 5532 events. 2250/5532 cut-off events. For 189900/189900 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 46637 event pairs, 841 based on Foata normal form. 1/5533 useless extension candidates. Maximal degree in co-relation 42852. Up to 4022 conditions per place. [2024-11-13 15:10:06,315 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 586 selfloop transitions, 277 changer transitions 0/869 dead transitions. [2024-11-13 15:10:06,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 869 transitions, 23609 flow [2024-11-13 15:10:06,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:10:06,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 15:10:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1170 transitions. [2024-11-13 15:10:06,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-11-13 15:10:06,317 INFO L175 Difference]: Start difference. First operand has 711 places, 798 transitions, 20989 flow. Second operand 25 states and 1170 transitions. [2024-11-13 15:10:06,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 869 transitions, 23609 flow [2024-11-13 15:10:08,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 719 places, 869 transitions, 22729 flow, removed 71 selfloop flow, removed 16 redundant places. [2024-11-13 15:10:08,360 INFO L231 Difference]: Finished difference. Result has 726 places, 820 transitions, 21372 flow [2024-11-13 15:10:08,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=20128, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=21372, PETRI_PLACES=726, PETRI_TRANSITIONS=820} [2024-11-13 15:10:08,361 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 604 predicate places. [2024-11-13 15:10:08,362 INFO L471 AbstractCegarLoop]: Abstraction has has 726 places, 820 transitions, 21372 flow [2024-11-13 15:10:08,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 42.35294117647059) internal successors, (720), 17 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:08,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:10:08,362 INFO L204 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] [2024-11-13 15:10:08,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-11-13 15:10:08,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:08,562 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:10:08,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:08,563 INFO L85 PathProgramCache]: Analyzing trace with hash -424262384, now seen corresponding path program 26 times [2024-11-13 15:10:08,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:10:08,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836321515] [2024-11-13 15:10:08,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:10:08,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:08,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:10:08,567 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:10:08,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-11-13 15:10:09,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:10:09,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:10:09,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:10:09,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:10:09,292 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 [2024-11-13 15:10:09,359 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:10:09,360 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:10:09,360 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:10:09,361 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 24 treesize of output 33 [2024-11-13 15:10:10,699 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:10:10,706 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 69 treesize of output 45 [2024-11-13 15:10:10,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 81 [2024-11-13 15:10:11,142 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 114 treesize of output 101 [2024-11-13 15:10:11,348 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:10:11,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 209 treesize of output 140 [2024-11-13 15:10:11,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:10:11,657 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 341 treesize of output 289 [2024-11-13 15:10:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:10:11,703 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:10:11,703 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:10:11,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836321515] [2024-11-13 15:10:11,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836321515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:10:11,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:10:11,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:10:11,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731876855] [2024-11-13 15:10:11,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:10:11,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:10:11,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:10:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:10:11,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:10:21,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:10:21,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 726 places, 820 transitions, 21372 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:21,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:10:21,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:10:21,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:10:31,741 INFO L124 PetriNetUnfolderBase]: 2259/5581 cut-off events. [2024-11-13 15:10:31,741 INFO L125 PetriNetUnfolderBase]: For 173534/173534 co-relation queries the response was YES. [2024-11-13 15:10:31,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43558 conditions, 5581 events. 2259/5581 cut-off events. For 173534/173534 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 47214 event pairs, 832 based on Foata normal form. 1/5582 useless extension candidates. Maximal degree in co-relation 43292. Up to 3959 conditions per place. [2024-11-13 15:10:31,865 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 600 selfloop transitions, 289 changer transitions 0/895 dead transitions. [2024-11-13 15:10:31,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 750 places, 895 transitions, 23934 flow [2024-11-13 15:10:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:10:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 15:10:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1174 transitions. [2024-11-13 15:10:31,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3557575757575758 [2024-11-13 15:10:31,866 INFO L175 Difference]: Start difference. First operand has 726 places, 820 transitions, 21372 flow. Second operand 25 states and 1174 transitions. [2024-11-13 15:10:31,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 750 places, 895 transitions, 23934 flow [2024-11-13 15:10:34,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 895 transitions, 23663 flow, removed 100 selfloop flow, removed 6 redundant places. [2024-11-13 15:10:34,327 INFO L231 Difference]: Finished difference. Result has 751 places, 835 transitions, 22053 flow [2024-11-13 15:10:34,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=21103, PETRI_DIFFERENCE_MINUEND_PLACES=720, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=22053, PETRI_PLACES=751, PETRI_TRANSITIONS=835} [2024-11-13 15:10:34,328 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 629 predicate places. [2024-11-13 15:10:34,328 INFO L471 AbstractCegarLoop]: Abstraction has has 751 places, 835 transitions, 22053 flow [2024-11-13 15:10:34,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:34,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:10:34,328 INFO L204 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] [2024-11-13 15:10:34,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2024-11-13 15:10:34,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:34,529 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:10:34,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:34,529 INFO L85 PathProgramCache]: Analyzing trace with hash -479498254, now seen corresponding path program 27 times [2024-11-13 15:10:34,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:10:34,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341544927] [2024-11-13 15:10:34,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:10:34,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:34,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:10:34,531 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:10:34,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-11-13 15:10:35,106 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 15:10:35,106 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:10:35,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 15:10:35,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:10:35,165 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:10:35,166 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:10:35,166 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:10:35,167 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 24 treesize of output 33 [2024-11-13 15:10:36,107 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 69 treesize of output 45 [2024-11-13 15:10:36,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 81 [2024-11-13 15:10:36,484 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 114 treesize of output 101 [2024-11-13 15:10:36,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:10:36,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 209 treesize of output 140 [2024-11-13 15:10:37,080 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:10:37,081 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 341 treesize of output 289 [2024-11-13 15:10:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:10:37,124 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:10:37,124 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:10:37,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341544927] [2024-11-13 15:10:37,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341544927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:10:37,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:10:37,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-13 15:10:37,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978482550] [2024-11-13 15:10:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:10:37,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:10:37,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:10:37,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:10:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:10:41,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-11-13 15:10:41,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 835 transitions, 22053 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) [2024-11-13 15:10:41,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:10:41,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-11-13 15:10:41,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:10:52,377 INFO L124 PetriNetUnfolderBase]: 2259/5588 cut-off events. [2024-11-13 15:10:52,377 INFO L125 PetriNetUnfolderBase]: For 182127/182127 co-relation queries the response was YES. [2024-11-13 15:10:52,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44040 conditions, 5588 events. 2259/5588 cut-off events. For 182127/182127 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 47127 event pairs, 823 based on Foata normal form. 1/5589 useless extension candidates. Maximal degree in co-relation 43767. Up to 3867 conditions per place. [2024-11-13 15:10:52,544 INFO L140 encePairwiseOnDemand]: 110/132 looper letters, 597 selfloop transitions, 293 changer transitions 0/896 dead transitions. [2024-11-13 15:10:52,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 773 places, 896 transitions, 24406 flow [2024-11-13 15:10:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 15:10:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-13 15:10:52,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1454 transitions. [2024-11-13 15:10:52,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47891963109354413 [2024-11-13 15:10:52,546 INFO L175 Difference]: Start difference. First operand has 751 places, 835 transitions, 22053 flow. Second operand 23 states and 1454 transitions. [2024-11-13 15:10:52,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 773 places, 896 transitions, 24406 flow [2024-11-13 15:10:54,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 758 places, 896 transitions, 23797 flow, removed 66 selfloop flow, removed 15 redundant places. [2024-11-13 15:10:54,594 INFO L231 Difference]: Finished difference. Result has 764 places, 842 transitions, 22318 flow [2024-11-13 15:10:54,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=21446, PETRI_DIFFERENCE_MINUEND_PLACES=736, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=22318, PETRI_PLACES=764, PETRI_TRANSITIONS=842} [2024-11-13 15:10:54,595 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 642 predicate places. [2024-11-13 15:10:54,595 INFO L471 AbstractCegarLoop]: Abstraction has has 764 places, 842 transitions, 22318 flow [2024-11-13 15:10:54,596 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) [2024-11-13 15:10:54,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:10:54,596 INFO L204 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] [2024-11-13 15:10:54,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2024-11-13 15:10:54,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:54,796 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-11-13 15:10:54,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash -187117936, now seen corresponding path program 28 times [2024-11-13 15:10:54,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:10:54,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088244691] [2024-11-13 15:10:54,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:10:54,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:10:54,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:10:54,799 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:10:54,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe676fb-0a47-4ca4-bd87-65708d2c29a5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-11-13 15:10:55,429 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:10:55,429 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:10:55,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 15:10:55,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:10:55,445 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 [2024-11-13 15:10:55,526 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:10:55,526 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:10:55,527 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:10:55,528 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 24 treesize of output 33 [2024-11-13 15:10:56,624 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 66 treesize of output 53 [2024-11-13 15:10:56,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2024-11-13 15:10:57,223 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:10:57,239 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 125 treesize of output 97 [2024-11-13 15:10:57,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:10:57,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 201 treesize of output 129 [2024-11-13 15:10:57,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:10:57,793 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 333 treesize of output 285 [2024-11-13 15:10:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:10:57,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:10:57,848 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:10:57,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088244691] [2024-11-13 15:10:57,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088244691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:10:57,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:10:57,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-13 15:10:57,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119153772] [2024-11-13 15:10:57,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:10:57,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:10:57,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:10:57,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:10:57,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:11:05,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 132 [2024-11-13 15:11:05,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 842 transitions, 22318 flow. Second operand has 18 states, 18 states have (on average 42.22222222222222) internal successors, (760), 18 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:11:05,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:11:05,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 132 [2024-11-13 15:11:05,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand