./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.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_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/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_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/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_228db932-ca49-47b4-bfd1-43bd911684b0/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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:33:43,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:33:43,264 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 16:33:43,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:33:43,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:33:43,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:33:43,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:33:43,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:33:43,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:33:43,312 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:33:43,312 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:33:43,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:33:43,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:33:43,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:33:43,314 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:33:43,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:33:43,315 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:33:43,315 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:33:43,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:33:43,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:33:43,315 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:33:43,315 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:33:43,315 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:33:43,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:33:43,315 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:33:43,315 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:33:43,316 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:33:43,316 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:33:43,316 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:33:43,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:33:43,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:33:43,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:33:43,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:33:43,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:33:43,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:33:43,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:33:43,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:33:43,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:33:43,318 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:33:43,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:33:43,319 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:33:43,319 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:33:43,319 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_228db932-ca49-47b4-bfd1-43bd911684b0/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 -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2024-11-13 16:33:43,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:33:43,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:33:43,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:33:43,700 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:33:43,701 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:33:43,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i Unable to find full path for "g++" [2024-11-13 16:33:45,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:33:46,019 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:33:46,020 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-11-13 16:33:46,046 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/data/9be053e5d/27562191d8364b688cc85460855b4258/FLAG2bfb6cd53 [2024-11-13 16:33:46,062 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/data/9be053e5d/27562191d8364b688cc85460855b4258 [2024-11-13 16:33:46,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:33:46,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:33:46,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:33:46,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:33:46,076 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:33:46,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:33:46" (1/1) ... [2024-11-13 16:33:46,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e592692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:46, skipping insertion in model container [2024-11-13 16:33:46,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:33:46" (1/1) ... [2024-11-13 16:33:46,139 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:33:46,697 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:46,698 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:46,698 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:46,701 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:46,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:33:46,837 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 16:33:46,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d10dac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:46, skipping insertion in model container [2024-11-13 16:33:46,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:33:46,839 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-13 16:33:46,842 INFO L158 Benchmark]: Toolchain (without parser) took 771.95ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 72.4MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 16:33:46,843 INFO L158 Benchmark]: CDTParser took 1.13ms. Allocated memory is still 83.9MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:33:46,844 INFO L158 Benchmark]: CACSL2BoogieTranslator took 768.09ms. Allocated memory is still 117.4MB. Free memory was 89.8MB in the beginning and 72.4MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 16:33:46,845 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13ms. Allocated memory is still 83.9MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 768.09ms. Allocated memory is still 117.4MB. Free memory was 89.8MB in the beginning and 72.4MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: 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_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/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_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/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_228db932-ca49-47b4-bfd1-43bd911684b0/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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:33:49,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:33:49,864 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 16:33:49,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:33:49,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:33:49,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:33:49,919 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:33:49,919 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:33:49,920 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:33:49,920 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:33:49,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:33:49,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:33:49,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:33:49,922 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:33:49,923 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:33:49,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:33:49,923 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:33:49,924 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:33:49,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:33:49,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:33:49,924 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:33:49,924 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:33:49,924 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:33:49,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:33:49,925 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:33:49,925 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 16:33:49,925 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:33:49,925 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 16:33:49,925 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:33:49,925 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:33:49,925 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:33:49,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:33:49,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:33:49,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:33:49,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:33:49,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:33:49,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:33:49,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:33:49,926 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 16:33:49,926 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 16:33:49,926 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:33:49,926 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:33:49,926 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:33:49,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:33:49,927 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_228db932-ca49-47b4-bfd1-43bd911684b0/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 -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2024-11-13 16:33:50,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:33:50,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:33:50,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:33:50,449 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:33:50,449 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:33:50,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i Unable to find full path for "g++" [2024-11-13 16:33:52,435 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:33:52,894 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:33:52,898 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-11-13 16:33:52,924 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/data/2cd7d51a1/aaef66647e7d474583079a900fdcc9be/FLAGbd23a7ebf [2024-11-13 16:33:52,954 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/data/2cd7d51a1/aaef66647e7d474583079a900fdcc9be [2024-11-13 16:33:52,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:33:52,959 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:33:52,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:33:52,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:33:52,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:33:52,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:33:52" (1/1) ... [2024-11-13 16:33:52,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5c5497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:52, skipping insertion in model container [2024-11-13 16:33:52,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:33:52" (1/1) ... [2024-11-13 16:33:53,036 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:33:53,849 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:53,850 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:53,850 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:53,851 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:53,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:33:53,984 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-13 16:33:53,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:33:54,042 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:54,043 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:54,043 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:54,043 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:54,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:33:54,109 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:33:54,192 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:54,192 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:54,193 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:54,194 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 16:33:54,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:33:54,320 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:33:54,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54 WrapperNode [2024-11-13 16:33:54,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:33:54,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:33:54,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:33:54,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:33:54,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (1/1) ... [2024-11-13 16:33:54,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (1/1) ... [2024-11-13 16:33:54,444 INFO L138 Inliner]: procedures = 287, calls = 176, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 408 [2024-11-13 16:33:54,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:33:54,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:33:54,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:33:54,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:33:54,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (1/1) ... [2024-11-13 16:33:54,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (1/1) ... [2024-11-13 16:33:54,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (1/1) ... [2024-11-13 16:33:54,539 INFO L175 MemorySlicer]: Split 138 memory accesses to 5 slices as follows [2, 8, 124, 2, 2]. 90 percent of accesses are in the largest equivalence class. The 110 initializations are split as follows [2, 8, 100, 0, 0]. The 15 writes are split as follows [0, 0, 13, 1, 1]. [2024-11-13 16:33:54,539 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (1/1) ... [2024-11-13 16:33:54,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (1/1) ... [2024-11-13 16:33:54,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (1/1) ... [2024-11-13 16:33:54,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (1/1) ... [2024-11-13 16:33:54,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (1/1) ... [2024-11-13 16:33:54,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (1/1) ... [2024-11-13 16:33:54,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:33:54,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:33:54,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:33:54,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:33:54,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (1/1) ... [2024-11-13 16:33:54,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:33:54,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:33:54,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:33:54,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:33:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 16:33:54,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 16:33:54,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 16:33:54,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-13 16:33:54,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-11-13 16:33:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 16:33:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 16:33:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 16:33:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 16:33:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 16:33:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-13 16:33:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-13 16:33:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-13 16:33:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:33:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 16:33:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 16:33:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 16:33:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 16:33:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 16:33:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 16:33:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-13 16:33:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-13 16:33:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-13 16:33:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-13 16:33:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-13 16:33:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-13 16:33:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2024-11-13 16:33:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 16:33:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-13 16:33:54,745 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-13 16:33:54,745 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 16:33:54,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:33:54,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:33:54,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 16:33:54,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 16:33:54,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 16:33:54,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 16:33:54,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-13 16:33:54,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:33:54,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:33:54,749 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 16:33:54,984 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:33:54,987 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:33:56,542 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 16:33:56,542 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:33:59,945 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:33:59,945 INFO L316 CfgBuilder]: Removed 30 assume(true) statements. [2024-11-13 16:33:59,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:33:59 BoogieIcfgContainer [2024-11-13 16:33:59,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:33:59,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:33:59,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:33:59,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:33:59,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:33:52" (1/3) ... [2024-11-13 16:33:59,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6b3cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:33:59, skipping insertion in model container [2024-11-13 16:33:59,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:33:54" (2/3) ... [2024-11-13 16:33:59,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6b3cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:33:59, skipping insertion in model container [2024-11-13 16:33:59,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:33:59" (3/3) ... [2024-11-13 16:33:59,961 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2024-11-13 16:33:59,987 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:33:59,989 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_90-arrayloop2_racing.i that has 3 procedures, 170 locations, 1 initial locations, 20 loop locations, and 59 error locations. [2024-11-13 16:33:59,989 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 16:34:00,234 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-13 16:34:00,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 207 transitions, 434 flow [2024-11-13 16:34:00,559 INFO L124 PetriNetUnfolderBase]: 55/343 cut-off events. [2024-11-13 16:34:00,566 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-13 16:34:00,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 343 events. 55/343 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1982 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2024-11-13 16:34:00,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 207 transitions, 434 flow [2024-11-13 16:34:00,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 207 transitions, 434 flow [2024-11-13 16:34:00,617 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:34:00,640 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;@47c61d03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:34:00,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2024-11-13 16:34:00,664 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 16:34:00,664 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 16:34:00,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:34:00,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:00,665 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 16:34:00,666 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:00,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:00,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1076902, now seen corresponding path program 1 times [2024-11-13 16:34:00,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:00,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872937128] [2024-11-13 16:34:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:00,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:00,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:00,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:00,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:34:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:01,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:34:01,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:01,383 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 16:34:01,385 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:01,385 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:01,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872937128] [2024-11-13 16:34:01,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872937128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:01,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:01,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:34:01,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547992580] [2024-11-13 16:34:01,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:01,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:34:01,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:01,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:34:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:34:02,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 207 [2024-11-13 16:34:02,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 207 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 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 16:34:02,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:02,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 207 [2024-11-13 16:34:02,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:05,994 INFO L124 PetriNetUnfolderBase]: 7529/16637 cut-off events. [2024-11-13 16:34:05,995 INFO L125 PetriNetUnfolderBase]: For 262/264 co-relation queries the response was YES. [2024-11-13 16:34:06,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28060 conditions, 16637 events. 7529/16637 cut-off events. For 262/264 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 156109 event pairs, 4501 based on Foata normal form. 2886/17302 useless extension candidates. Maximal degree in co-relation 26788. Up to 7851 conditions per place. [2024-11-13 16:34:06,300 INFO L140 encePairwiseOnDemand]: 175/207 looper letters, 119 selfloop transitions, 4 changer transitions 0/225 dead transitions. [2024-11-13 16:34:06,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 225 transitions, 716 flow [2024-11-13 16:34:06,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:34:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:34:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2024-11-13 16:34:06,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7041062801932367 [2024-11-13 16:34:06,322 INFO L175 Difference]: Start difference. First operand has 176 places, 207 transitions, 434 flow. Second operand 4 states and 583 transitions. [2024-11-13 16:34:06,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 225 transitions, 716 flow [2024-11-13 16:34:06,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 225 transitions, 716 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 16:34:06,341 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 394 flow [2024-11-13 16:34:06,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2024-11-13 16:34:06,348 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2024-11-13 16:34:06,350 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 394 flow [2024-11-13 16:34:06,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 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 16:34:06,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:06,351 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 16:34:06,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:34:06,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:06,552 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:06,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:06,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1076903, now seen corresponding path program 1 times [2024-11-13 16:34:06,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:06,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387603079] [2024-11-13 16:34:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:06,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:06,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:06,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:06,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:34:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:07,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 16:34:07,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:07,242 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 16:34:07,242 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:07,243 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:07,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387603079] [2024-11-13 16:34:07,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387603079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:07,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:07,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:34:07,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465276423] [2024-11-13 16:34:07,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:07,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:34:07,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:07,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:34:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:34:07,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2024-11-13 16:34:07,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 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 16:34:07,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:07,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2024-11-13 16:34:07,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:11,353 INFO L124 PetriNetUnfolderBase]: 7464/17559 cut-off events. [2024-11-13 16:34:11,354 INFO L125 PetriNetUnfolderBase]: For 778/780 co-relation queries the response was YES. [2024-11-13 16:34:11,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29834 conditions, 17559 events. 7464/17559 cut-off events. For 778/780 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170707 event pairs, 6385 based on Foata normal form. 3/15149 useless extension candidates. Maximal degree in co-relation 28468. Up to 11048 conditions per place. [2024-11-13 16:34:11,524 INFO L140 encePairwiseOnDemand]: 199/207 looper letters, 76 selfloop transitions, 5 changer transitions 0/183 dead transitions. [2024-11-13 16:34:11,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 183 transitions, 570 flow [2024-11-13 16:34:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:34:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:34:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2024-11-13 16:34:11,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6038647342995169 [2024-11-13 16:34:11,529 INFO L175 Difference]: Start difference. First operand has 176 places, 179 transitions, 394 flow. Second operand 4 states and 500 transitions. [2024-11-13 16:34:11,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 183 transitions, 570 flow [2024-11-13 16:34:11,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 183 transitions, 558 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 16:34:11,547 INFO L231 Difference]: Finished difference. Result has 178 places, 183 transitions, 427 flow [2024-11-13 16:34:11,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=178, PETRI_TRANSITIONS=183} [2024-11-13 16:34:11,549 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2024-11-13 16:34:11,549 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 183 transitions, 427 flow [2024-11-13 16:34:11,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 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 16:34:11,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:11,550 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 16:34:11,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 16:34:11,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:11,754 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:11,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:11,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2018270042, now seen corresponding path program 1 times [2024-11-13 16:34:11,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:11,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842364833] [2024-11-13 16:34:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:11,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:11,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:11,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:11,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:34:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:12,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:34:12,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:12,280 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 16:34:12,290 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 16:34:12,290 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:12,290 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:12,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842364833] [2024-11-13 16:34:12,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842364833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:12,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:12,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:34:12,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350748355] [2024-11-13 16:34:12,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:12,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:34:12,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:34:12,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:34:12,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 207 [2024-11-13 16:34:12,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 183 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 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 16:34:12,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:12,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 207 [2024-11-13 16:34:12,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:14,974 INFO L124 PetriNetUnfolderBase]: 7464/17558 cut-off events. [2024-11-13 16:34:14,974 INFO L125 PetriNetUnfolderBase]: For 271/273 co-relation queries the response was YES. [2024-11-13 16:34:15,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29313 conditions, 17558 events. 7464/17558 cut-off events. For 271/273 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170679 event pairs, 6385 based on Foata normal form. 0/15144 useless extension candidates. Maximal degree in co-relation 29279. Up to 11044 conditions per place. [2024-11-13 16:34:15,072 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 74 selfloop transitions, 3 changer transitions 0/182 dead transitions. [2024-11-13 16:34:15,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 182 transitions, 579 flow [2024-11-13 16:34:15,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:34:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:34:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2024-11-13 16:34:15,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6360708534621579 [2024-11-13 16:34:15,074 INFO L175 Difference]: Start difference. First operand has 178 places, 183 transitions, 427 flow. Second operand 3 states and 395 transitions. [2024-11-13 16:34:15,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 182 transitions, 579 flow [2024-11-13 16:34:15,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 182 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:34:15,079 INFO L231 Difference]: Finished difference. Result has 178 places, 182 transitions, 428 flow [2024-11-13 16:34:15,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=178, PETRI_TRANSITIONS=182} [2024-11-13 16:34:15,081 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2024-11-13 16:34:15,081 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 182 transitions, 428 flow [2024-11-13 16:34:15,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 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 16:34:15,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:15,082 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 16:34:15,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 16:34:15,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:15,283 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:15,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:15,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2018270043, now seen corresponding path program 1 times [2024-11-13 16:34:15,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:15,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975501909] [2024-11-13 16:34:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:15,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:15,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:15,289 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:15,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:34:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:15,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:34:15,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:15,851 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 16:34:15,869 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 16:34:15,869 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:15,869 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:15,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975501909] [2024-11-13 16:34:15,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975501909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:15,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:15,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:34:15,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28229387] [2024-11-13 16:34:15,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:15,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:34:15,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:15,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:34:15,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:34:16,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 207 [2024-11-13 16:34:16,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 182 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 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 16:34:16,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:16,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 207 [2024-11-13 16:34:16,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:18,116 INFO L124 PetriNetUnfolderBase]: 7464/17557 cut-off events. [2024-11-13 16:34:18,116 INFO L125 PetriNetUnfolderBase]: For 273/275 co-relation queries the response was YES. [2024-11-13 16:34:18,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29313 conditions, 17557 events. 7464/17557 cut-off events. For 273/275 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170776 event pairs, 6385 based on Foata normal form. 0/15145 useless extension candidates. Maximal degree in co-relation 29278. Up to 11044 conditions per place. [2024-11-13 16:34:18,239 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 74 selfloop transitions, 3 changer transitions 0/181 dead transitions. [2024-11-13 16:34:18,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 181 transitions, 580 flow [2024-11-13 16:34:18,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:34:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:34:18,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2024-11-13 16:34:18,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6360708534621579 [2024-11-13 16:34:18,242 INFO L175 Difference]: Start difference. First operand has 178 places, 182 transitions, 428 flow. Second operand 3 states and 395 transitions. [2024-11-13 16:34:18,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 181 transitions, 580 flow [2024-11-13 16:34:18,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 181 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 16:34:18,248 INFO L231 Difference]: Finished difference. Result has 177 places, 181 transitions, 426 flow [2024-11-13 16:34:18,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=177, PETRI_TRANSITIONS=181} [2024-11-13 16:34:18,249 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 1 predicate places. [2024-11-13 16:34:18,250 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 181 transitions, 426 flow [2024-11-13 16:34:18,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 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 16:34:18,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:18,251 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-13 16:34:18,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:34:18,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:18,452 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:18,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:18,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1858134796, now seen corresponding path program 1 times [2024-11-13 16:34:18,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:18,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194109741] [2024-11-13 16:34:18,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:18,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:18,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:18,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:18,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:34:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:18,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:34:18,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:34:18,948 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:18,949 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:18,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194109741] [2024-11-13 16:34:18,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194109741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:18,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:18,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:34:18,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371729271] [2024-11-13 16:34:18,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:18,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:34:18,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:18,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:34:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:34:18,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2024-11-13 16:34:18,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 181 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 16:34:18,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:18,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2024-11-13 16:34:18,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:20,991 INFO L124 PetriNetUnfolderBase]: 7463/17579 cut-off events. [2024-11-13 16:34:20,991 INFO L125 PetriNetUnfolderBase]: For 275/277 co-relation queries the response was YES. [2024-11-13 16:34:21,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29341 conditions, 17579 events. 7463/17579 cut-off events. For 275/277 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170812 event pairs, 6385 based on Foata normal form. 2/15158 useless extension candidates. Maximal degree in co-relation 29309. Up to 11044 conditions per place. [2024-11-13 16:34:21,075 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 78 selfloop transitions, 3 changer transitions 0/185 dead transitions. [2024-11-13 16:34:21,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 185 transitions, 600 flow [2024-11-13 16:34:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:34:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:34:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2024-11-13 16:34:21,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6489533011272142 [2024-11-13 16:34:21,078 INFO L175 Difference]: Start difference. First operand has 177 places, 181 transitions, 426 flow. Second operand 3 states and 403 transitions. [2024-11-13 16:34:21,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 185 transitions, 600 flow [2024-11-13 16:34:21,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 185 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 16:34:21,083 INFO L231 Difference]: Finished difference. Result has 178 places, 181 transitions, 431 flow [2024-11-13 16:34:21,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=178, PETRI_TRANSITIONS=181} [2024-11-13 16:34:21,084 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2024-11-13 16:34:21,085 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 181 transitions, 431 flow [2024-11-13 16:34:21,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 16:34:21,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:21,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:21,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:34:21,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:21,286 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:21,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:21,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1858137028, now seen corresponding path program 1 times [2024-11-13 16:34:21,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:21,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814693953] [2024-11-13 16:34:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:21,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:21,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:21,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:21,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:34:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:21,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:34:21,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:21,736 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 16:34:21,776 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 16:34:21,776 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:21,776 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:21,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814693953] [2024-11-13 16:34:21,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814693953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:21,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:21,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:34:21,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933075815] [2024-11-13 16:34:21,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:21,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:34:21,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:21,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:34:21,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:34:22,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 207 [2024-11-13 16:34:22,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 181 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 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 16:34:22,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:22,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 207 [2024-11-13 16:34:22,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:24,734 INFO L124 PetriNetUnfolderBase]: 7463/17575 cut-off events. [2024-11-13 16:34:24,734 INFO L125 PetriNetUnfolderBase]: For 290/292 co-relation queries the response was YES. [2024-11-13 16:34:24,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29341 conditions, 17575 events. 7463/17575 cut-off events. For 290/292 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170748 event pairs, 6385 based on Foata normal form. 2/15158 useless extension candidates. Maximal degree in co-relation 29305. Up to 11048 conditions per place. [2024-11-13 16:34:24,846 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 75 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2024-11-13 16:34:24,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 179 transitions, 585 flow [2024-11-13 16:34:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:34:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:34:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 489 transitions. [2024-11-13 16:34:24,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5905797101449275 [2024-11-13 16:34:24,850 INFO L175 Difference]: Start difference. First operand has 178 places, 181 transitions, 431 flow. Second operand 4 states and 489 transitions. [2024-11-13 16:34:24,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 179 transitions, 585 flow [2024-11-13 16:34:24,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 179 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:34:24,857 INFO L231 Difference]: Finished difference. Result has 178 places, 179 transitions, 432 flow [2024-11-13 16:34:24,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=178, PETRI_TRANSITIONS=179} [2024-11-13 16:34:24,859 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2024-11-13 16:34:24,859 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 179 transitions, 432 flow [2024-11-13 16:34:24,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 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 16:34:24,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:24,860 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:24,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 16:34:25,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:25,061 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:25,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:25,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1858137029, now seen corresponding path program 1 times [2024-11-13 16:34:25,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:25,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903317282] [2024-11-13 16:34:25,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:25,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:25,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:25,066 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:25,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:34:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:25,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:34:25,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:25,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 16:34:25,580 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 16:34:25,580 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:25,580 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:25,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903317282] [2024-11-13 16:34:25,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903317282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:25,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:25,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:34:25,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92189969] [2024-11-13 16:34:25,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:25,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:34:25,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:25,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:34:25,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:34:26,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 207 [2024-11-13 16:34:26,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 179 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 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 16:34:26,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:26,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 207 [2024-11-13 16:34:26,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:27,964 INFO L124 PetriNetUnfolderBase]: 7463/17571 cut-off events. [2024-11-13 16:34:27,965 INFO L125 PetriNetUnfolderBase]: For 275/277 co-relation queries the response was YES. [2024-11-13 16:34:28,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29345 conditions, 17571 events. 7463/17571 cut-off events. For 275/277 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170691 event pairs, 6385 based on Foata normal form. 2/15156 useless extension candidates. Maximal degree in co-relation 29309. Up to 11046 conditions per place. [2024-11-13 16:34:28,077 INFO L140 encePairwiseOnDemand]: 200/207 looper letters, 72 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2024-11-13 16:34:28,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 177 transitions, 586 flow [2024-11-13 16:34:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:34:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:34:28,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2024-11-13 16:34:28,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5623188405797102 [2024-11-13 16:34:28,081 INFO L175 Difference]: Start difference. First operand has 178 places, 179 transitions, 432 flow. Second operand 5 states and 582 transitions. [2024-11-13 16:34:28,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 177 transitions, 586 flow [2024-11-13 16:34:28,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 177 transitions, 578 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 16:34:28,086 INFO L231 Difference]: Finished difference. Result has 177 places, 177 transitions, 434 flow [2024-11-13 16:34:28,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=177, PETRI_TRANSITIONS=177} [2024-11-13 16:34:28,087 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 1 predicate places. [2024-11-13 16:34:28,087 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 177 transitions, 434 flow [2024-11-13 16:34:28,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 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 16:34:28,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:28,088 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:28,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:34:28,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:28,289 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:28,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:28,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1036747287, now seen corresponding path program 1 times [2024-11-13 16:34:28,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:28,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895351684] [2024-11-13 16:34:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:28,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:28,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:28,292 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:28,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:34:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:28,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 16:34:28,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:28,878 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-13 16:34:28,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2024-11-13 16:34:29,043 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 16:34:29,043 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:29,044 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:29,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895351684] [2024-11-13 16:34:29,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895351684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:29,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:29,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:34:29,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538092760] [2024-11-13 16:34:29,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:29,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:34:29,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:34:29,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:34:29,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 207 [2024-11-13 16:34:29,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 177 transitions, 434 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 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 16:34:29,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:29,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 207 [2024-11-13 16:34:29,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:32,347 INFO L124 PetriNetUnfolderBase]: 7529/16650 cut-off events. [2024-11-13 16:34:32,347 INFO L125 PetriNetUnfolderBase]: For 330/342 co-relation queries the response was YES. [2024-11-13 16:34:32,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28745 conditions, 16650 events. 7529/16650 cut-off events. For 330/342 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 156033 event pairs, 4501 based on Foata normal form. 12/14538 useless extension candidates. Maximal degree in co-relation 28706. Up to 7858 conditions per place. [2024-11-13 16:34:32,436 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 122 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2024-11-13 16:34:32,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 221 transitions, 776 flow [2024-11-13 16:34:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:34:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:34:32,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 533 transitions. [2024-11-13 16:34:32,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.643719806763285 [2024-11-13 16:34:32,438 INFO L175 Difference]: Start difference. First operand has 177 places, 177 transitions, 434 flow. Second operand 4 states and 533 transitions. [2024-11-13 16:34:32,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 221 transitions, 776 flow [2024-11-13 16:34:32,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 221 transitions, 762 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 16:34:32,443 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 426 flow [2024-11-13 16:34:32,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=426, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2024-11-13 16:34:32,444 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, -2 predicate places. [2024-11-13 16:34:32,444 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 426 flow [2024-11-13 16:34:32,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 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 16:34:32,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:32,445 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:32,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:34:32,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:32,646 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:32,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:32,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1036747288, now seen corresponding path program 1 times [2024-11-13 16:34:32,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:32,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350333381] [2024-11-13 16:34:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:32,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:32,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:32,650 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:32,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:34:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:33,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 16:34:33,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:33,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:34:33,281 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 16:34:33,373 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 16:34:33,374 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:33,374 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350333381] [2024-11-13 16:34:33,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350333381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:33,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:33,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:34:33,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174559791] [2024-11-13 16:34:33,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:33,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:34:33,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:33,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:34:33,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:34:34,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2024-11-13 16:34:34,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 426 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 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 16:34:34,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:34,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2024-11-13 16:34:34,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:36,377 INFO L124 PetriNetUnfolderBase]: 7608/17902 cut-off events. [2024-11-13 16:34:36,377 INFO L125 PetriNetUnfolderBase]: For 895/897 co-relation queries the response was YES. [2024-11-13 16:34:36,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30539 conditions, 17902 events. 7608/17902 cut-off events. For 895/897 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 174739 event pairs, 6517 based on Foata normal form. 2/15447 useless extension candidates. Maximal degree in co-relation 30447. Up to 11287 conditions per place. [2024-11-13 16:34:36,450 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 83 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2024-11-13 16:34:36,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 182 transitions, 632 flow [2024-11-13 16:34:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:34:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:34:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2024-11-13 16:34:36,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.607487922705314 [2024-11-13 16:34:36,452 INFO L175 Difference]: Start difference. First operand has 174 places, 175 transitions, 426 flow. Second operand 4 states and 503 transitions. [2024-11-13 16:34:36,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 182 transitions, 632 flow [2024-11-13 16:34:36,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 182 transitions, 616 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 16:34:36,459 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 462 flow [2024-11-13 16:34:36,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=462, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2024-11-13 16:34:36,460 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2024-11-13 16:34:36,460 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 462 flow [2024-11-13 16:34:36,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 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 16:34:36,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:36,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:36,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 16:34:36,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:36,661 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:36,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:36,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2074396031, now seen corresponding path program 1 times [2024-11-13 16:34:36,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:36,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570005977] [2024-11-13 16:34:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:36,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:36,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:36,664 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:36,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:34:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:37,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 16:34:37,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:37,298 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 11 treesize of output 7 [2024-11-13 16:34:37,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 18 [2024-11-13 16:34:37,428 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:34:37,428 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 16:34:37,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-13 16:34:37,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-13 16:34:37,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-13 16:34:37,747 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 16:34:37,747 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:37,747 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:37,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570005977] [2024-11-13 16:34:37,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570005977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:37,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:37,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:34:37,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388529790] [2024-11-13 16:34:37,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:37,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:34:37,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:37,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:34:37,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:34:41,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 207 [2024-11-13 16:34:41,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 462 flow. Second operand has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 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 16:34:41,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:41,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 207 [2024-11-13 16:34:41,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:44,066 INFO L124 PetriNetUnfolderBase]: 7608/17901 cut-off events. [2024-11-13 16:34:44,066 INFO L125 PetriNetUnfolderBase]: For 373/375 co-relation queries the response was YES. [2024-11-13 16:34:44,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30041 conditions, 17901 events. 7608/17901 cut-off events. For 373/375 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 174679 event pairs, 6517 based on Foata normal form. 0/15459 useless extension candidates. Maximal degree in co-relation 29948. Up to 11296 conditions per place. [2024-11-13 16:34:44,168 INFO L140 encePairwiseOnDemand]: 195/207 looper letters, 96 selfloop transitions, 11 changer transitions 0/195 dead transitions. [2024-11-13 16:34:44,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 195 transitions, 714 flow [2024-11-13 16:34:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:34:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 16:34:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1108 transitions. [2024-11-13 16:34:44,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48660518225735616 [2024-11-13 16:34:44,173 INFO L175 Difference]: Start difference. First operand has 176 places, 179 transitions, 462 flow. Second operand 11 states and 1108 transitions. [2024-11-13 16:34:44,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 195 transitions, 714 flow [2024-11-13 16:34:44,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 195 transitions, 712 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:34:44,178 INFO L231 Difference]: Finished difference. Result has 190 places, 184 transitions, 518 flow [2024-11-13 16:34:44,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=518, PETRI_PLACES=190, PETRI_TRANSITIONS=184} [2024-11-13 16:34:44,180 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 14 predicate places. [2024-11-13 16:34:44,180 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 184 transitions, 518 flow [2024-11-13 16:34:44,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 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 16:34:44,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:44,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:44,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 16:34:44,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:44,381 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:44,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2074396032, now seen corresponding path program 1 times [2024-11-13 16:34:44,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:44,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239779714] [2024-11-13 16:34:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:44,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:44,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:44,384 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:44,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:34:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:44,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 16:34:44,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:44,966 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 7 [2024-11-13 16:34:44,985 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 7 [2024-11-13 16:34:45,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 18 [2024-11-13 16:34:45,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 18 [2024-11-13 16:34:45,186 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:34:45,187 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 16:34:45,207 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 16:34:45,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-13 16:34:45,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-13 16:34:45,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-13 16:34:45,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-13 16:34:45,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-13 16:34:45,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-13 16:34:45,652 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 16:34:45,653 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:45,653 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:45,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239779714] [2024-11-13 16:34:45,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239779714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:45,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:45,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 16:34:45,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47635933] [2024-11-13 16:34:45,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:45,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:34:45,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:45,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:34:45,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:34:49,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 207 [2024-11-13 16:34:49,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 184 transitions, 518 flow. Second operand has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 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 16:34:49,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:49,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 207 [2024-11-13 16:34:49,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:52,677 INFO L124 PetriNetUnfolderBase]: 7608/17900 cut-off events. [2024-11-13 16:34:52,677 INFO L125 PetriNetUnfolderBase]: For 384/386 co-relation queries the response was YES. [2024-11-13 16:34:52,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30078 conditions, 17900 events. 7608/17900 cut-off events. For 384/386 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 174742 event pairs, 6517 based on Foata normal form. 1/15462 useless extension candidates. Maximal degree in co-relation 29997. Up to 11300 conditions per place. [2024-11-13 16:34:52,774 INFO L140 encePairwiseOnDemand]: 195/207 looper letters, 98 selfloop transitions, 11 changer transitions 0/195 dead transitions. [2024-11-13 16:34:52,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 195 transitions, 766 flow [2024-11-13 16:34:52,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:34:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 16:34:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1088 transitions. [2024-11-13 16:34:52,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47782169521299955 [2024-11-13 16:34:52,778 INFO L175 Difference]: Start difference. First operand has 190 places, 184 transitions, 518 flow. Second operand 11 states and 1088 transitions. [2024-11-13 16:34:52,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 195 transitions, 766 flow [2024-11-13 16:34:52,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 195 transitions, 762 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 16:34:52,783 INFO L231 Difference]: Finished difference. Result has 199 places, 184 transitions, 540 flow [2024-11-13 16:34:52,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=540, PETRI_PLACES=199, PETRI_TRANSITIONS=184} [2024-11-13 16:34:52,784 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 23 predicate places. [2024-11-13 16:34:52,784 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 184 transitions, 540 flow [2024-11-13 16:34:52,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 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 16:34:52,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:52,785 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:52,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 16:34:52,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:52,989 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:52,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:52,989 INFO L85 PathProgramCache]: Analyzing trace with hash -118231391, now seen corresponding path program 1 times [2024-11-13 16:34:52,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:52,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457096823] [2024-11-13 16:34:52,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:52,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:52,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:52,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:52,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 16:34:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:53,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:34:53,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:53,449 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 16:34:53,504 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 16:34:53,504 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:53,504 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:53,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457096823] [2024-11-13 16:34:53,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457096823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:53,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:53,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:34:53,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095935323] [2024-11-13 16:34:53,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:53,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:34:53,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:53,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:34:53,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:34:54,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 207 [2024-11-13 16:34:54,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 184 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 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 16:34:54,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:54,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 207 [2024-11-13 16:34:54,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:55,711 INFO L124 PetriNetUnfolderBase]: 7464/17587 cut-off events. [2024-11-13 16:34:55,711 INFO L125 PetriNetUnfolderBase]: For 327/329 co-relation queries the response was YES. [2024-11-13 16:34:55,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29435 conditions, 17587 events. 7464/17587 cut-off events. For 327/329 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 171049 event pairs, 6385 based on Foata normal form. 8/15183 useless extension candidates. Maximal degree in co-relation 29361. Up to 11045 conditions per place. [2024-11-13 16:34:55,822 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 75 selfloop transitions, 9 changer transitions 0/182 dead transitions. [2024-11-13 16:34:55,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 182 transitions, 704 flow [2024-11-13 16:34:55,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:34:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:34:55,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2024-11-13 16:34:55,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2024-11-13 16:34:55,825 INFO L175 Difference]: Start difference. First operand has 199 places, 184 transitions, 540 flow. Second operand 4 states and 495 transitions. [2024-11-13 16:34:55,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 182 transitions, 704 flow [2024-11-13 16:34:55,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 182 transitions, 682 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-13 16:34:55,830 INFO L231 Difference]: Finished difference. Result has 190 places, 182 transitions, 532 flow [2024-11-13 16:34:55,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=532, PETRI_PLACES=190, PETRI_TRANSITIONS=182} [2024-11-13 16:34:55,831 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 14 predicate places. [2024-11-13 16:34:55,831 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 182 transitions, 532 flow [2024-11-13 16:34:55,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 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 16:34:55,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:55,832 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:55,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 16:34:56,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:56,033 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:56,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:56,033 INFO L85 PathProgramCache]: Analyzing trace with hash -118231392, now seen corresponding path program 1 times [2024-11-13 16:34:56,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:56,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977524377] [2024-11-13 16:34:56,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:56,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:56,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:56,035 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:56,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:34:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:56,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:34:56,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:34:56,422 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 16:34:56,422 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:34:56,422 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:34:56,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977524377] [2024-11-13 16:34:56,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977524377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:34:56,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:34:56,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:34:56,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900024611] [2024-11-13 16:34:56,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:34:56,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:34:56,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:34:56,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:34:56,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:34:56,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 207 [2024-11-13 16:34:56,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 182 transitions, 532 flow. Second operand has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 0 states have call successors, (0), 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 16:34:56,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:34:56,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 207 [2024-11-13 16:34:56,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:34:59,139 INFO L124 PetriNetUnfolderBase]: 7464/17579 cut-off events. [2024-11-13 16:34:59,139 INFO L125 PetriNetUnfolderBase]: For 313/315 co-relation queries the response was YES. [2024-11-13 16:34:59,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29442 conditions, 17579 events. 7464/17579 cut-off events. For 313/315 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170886 event pairs, 6385 based on Foata normal form. 0/15175 useless extension candidates. Maximal degree in co-relation 29373. Up to 11047 conditions per place. [2024-11-13 16:34:59,246 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 78 selfloop transitions, 11 changer transitions 0/180 dead transitions. [2024-11-13 16:34:59,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 180 transitions, 706 flow [2024-11-13 16:34:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:34:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 16:34:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 584 transitions. [2024-11-13 16:34:59,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5642512077294686 [2024-11-13 16:34:59,249 INFO L175 Difference]: Start difference. First operand has 190 places, 182 transitions, 532 flow. Second operand 5 states and 584 transitions. [2024-11-13 16:34:59,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 180 transitions, 706 flow [2024-11-13 16:34:59,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 180 transitions, 688 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 16:34:59,254 INFO L231 Difference]: Finished difference. Result has 189 places, 180 transitions, 532 flow [2024-11-13 16:34:59,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=532, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2024-11-13 16:34:59,255 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 13 predicate places. [2024-11-13 16:34:59,256 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 532 flow [2024-11-13 16:34:59,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 0 states have call successors, (0), 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 16:34:59,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:34:59,256 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:34:59,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 16:34:59,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:59,457 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:34:59,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:34:59,457 INFO L85 PathProgramCache]: Analyzing trace with hash 423900824, now seen corresponding path program 1 times [2024-11-13 16:34:59,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:34:59,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636225581] [2024-11-13 16:34:59,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:34:59,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:34:59,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:34:59,462 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:34:59,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 16:34:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:34:59,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:34:59,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:35:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:00,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:35:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:00,063 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:35:00,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636225581] [2024-11-13 16:35:00,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636225581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:35:00,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:35:00,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-13 16:35:00,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179378887] [2024-11-13 16:35:00,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:35:00,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:35:00,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:35:00,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:35:00,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:35:00,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2024-11-13 16:35:00,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 532 flow. Second operand has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 0 states have call successors, (0), 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 16:35:00,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:35:00,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2024-11-13 16:35:00,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:35:02,286 INFO L124 PetriNetUnfolderBase]: 7464/17629 cut-off events. [2024-11-13 16:35:02,286 INFO L125 PetriNetUnfolderBase]: For 411/413 co-relation queries the response was YES. [2024-11-13 16:35:02,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29570 conditions, 17629 events. 7464/17629 cut-off events. For 411/413 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 171420 event pairs, 6385 based on Foata normal form. 6/15227 useless extension candidates. Maximal degree in co-relation 29494. Up to 11041 conditions per place. [2024-11-13 16:35:02,399 INFO L140 encePairwiseOnDemand]: 203/207 looper letters, 92 selfloop transitions, 11 changer transitions 0/199 dead transitions. [2024-11-13 16:35:02,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 199 transitions, 866 flow [2024-11-13 16:35:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:35:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 16:35:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2024-11-13 16:35:02,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5958132045088567 [2024-11-13 16:35:02,402 INFO L175 Difference]: Start difference. First operand has 189 places, 180 transitions, 532 flow. Second operand 6 states and 740 transitions. [2024-11-13 16:35:02,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 199 transitions, 866 flow [2024-11-13 16:35:02,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 199 transitions, 812 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 16:35:02,408 INFO L231 Difference]: Finished difference. Result has 194 places, 185 transitions, 596 flow [2024-11-13 16:35:02,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=596, PETRI_PLACES=194, PETRI_TRANSITIONS=185} [2024-11-13 16:35:02,409 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 18 predicate places. [2024-11-13 16:35:02,409 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 185 transitions, 596 flow [2024-11-13 16:35:02,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 0 states have call successors, (0), 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 16:35:02,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:35:02,411 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:35:02,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 16:35:02,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:35:02,611 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:35:02,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:35:02,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1160223067, now seen corresponding path program 1 times [2024-11-13 16:35:02,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:35:02,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246803845] [2024-11-13 16:35:02,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:35:02,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:35:02,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:35:02,614 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:35:02,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 16:35:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:03,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 16:35:03,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:35:03,228 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 23 treesize of output 1 [2024-11-13 16:35:03,322 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-11-13 16:35:03,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 52 [2024-11-13 16:35:03,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 29 [2024-11-13 16:35:03,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 29 [2024-11-13 16:35:03,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 21 [2024-11-13 16:35:03,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 11 [2024-11-13 16:35:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:03,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:35:03,798 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_571 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_571) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-13 16:35:03,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:35:03,989 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-13 16:35:04,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:35:04,010 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2024-11-13 16:35:04,023 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 20 treesize of output 14 [2024-11-13 16:35:18,624 INFO L349 Elim1Store]: treesize reduction 7, result has 96.7 percent of original size [2024-11-13 16:35:18,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 103 treesize of output 290 [2024-11-13 16:35:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:19,267 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:35:19,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246803845] [2024-11-13 16:35:19,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246803845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:35:19,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:35:19,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-13 16:35:19,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120837484] [2024-11-13 16:35:19,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:35:19,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 16:35:19,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:35:19,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 16:35:19,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=245, Unknown=15, NotChecked=32, Total=342 [2024-11-13 16:35:19,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 207 [2024-11-13 16:35:19,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 185 transitions, 596 flow. Second operand has 19 states, 19 states have (on average 57.68421052631579) internal successors, (1096), 19 states have internal predecessors, (1096), 0 states have call successors, (0), 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 16:35:19,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:35:19,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 207 [2024-11-13 16:35:19,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:35:31,050 INFO L124 PetriNetUnfolderBase]: 27748/54521 cut-off events. [2024-11-13 16:35:31,050 INFO L125 PetriNetUnfolderBase]: For 663/663 co-relation queries the response was YES. [2024-11-13 16:35:31,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97084 conditions, 54521 events. 27748/54521 cut-off events. For 663/663 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 553067 event pairs, 24779 based on Foata normal form. 0/40995 useless extension candidates. Maximal degree in co-relation 96996. Up to 40959 conditions per place. [2024-11-13 16:35:31,395 INFO L140 encePairwiseOnDemand]: 199/207 looper letters, 114 selfloop transitions, 26 changer transitions 0/196 dead transitions. [2024-11-13 16:35:31,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 196 transitions, 916 flow [2024-11-13 16:35:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:35:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 16:35:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 796 transitions. [2024-11-13 16:35:31,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32045088566827695 [2024-11-13 16:35:31,398 INFO L175 Difference]: Start difference. First operand has 194 places, 185 transitions, 596 flow. Second operand 12 states and 796 transitions. [2024-11-13 16:35:31,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 196 transitions, 916 flow [2024-11-13 16:35:31,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 196 transitions, 900 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-13 16:35:31,402 INFO L231 Difference]: Finished difference. Result has 206 places, 190 transitions, 669 flow [2024-11-13 16:35:31,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=669, PETRI_PLACES=206, PETRI_TRANSITIONS=190} [2024-11-13 16:35:31,403 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 30 predicate places. [2024-11-13 16:35:31,403 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 190 transitions, 669 flow [2024-11-13 16:35:31,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 57.68421052631579) internal successors, (1096), 19 states have internal predecessors, (1096), 0 states have call successors, (0), 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 16:35:31,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:35:31,403 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:35:31,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 16:35:31,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:35:31,604 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:35:31,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:35:31,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1160223068, now seen corresponding path program 1 times [2024-11-13 16:35:31,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:35:31,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062419782] [2024-11-13 16:35:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:35:31,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:35:31,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:35:31,607 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:35:31,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 16:35:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:35:32,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 16:35:32,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:35:32,114 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 16:35:32,490 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 23 treesize of output 1 [2024-11-13 16:35:32,503 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 15 treesize of output 11 [2024-11-13 16:35:32,609 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2024-11-13 16:35:32,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 29 [2024-11-13 16:35:32,682 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2024-11-13 16:35:32,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-13 16:35:32,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 27 [2024-11-13 16:35:32,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 16:35:32,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 27 [2024-11-13 16:35:32,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 16:35:32,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 19 [2024-11-13 16:35:32,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 16:35:32,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2024-11-13 16:35:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:33,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:35:33,270 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_677 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_677) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_677) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_678) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-13 16:35:33,312 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_677 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_677) |c_~#c~0.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_678 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_677) |c_~#c~0.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_678) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-13 16:35:33,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:35:33,573 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2024-11-13 16:35:33,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:35:33,599 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 55 [2024-11-13 16:35:33,611 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 23 treesize of output 11 [2024-11-13 16:35:33,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:35:33,703 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2024-11-13 16:35:33,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:35:33,719 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-13 16:35:33,724 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:35:33,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:35:33,751 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 41 [2024-11-13 16:35:33,756 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 16:35:33,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:35:33,785 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2024-11-13 16:35:36,417 INFO L349 Elim1Store]: treesize reduction 10, result has 83.6 percent of original size [2024-11-13 16:35:36,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 91 [2024-11-13 16:35:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-13 16:35:37,235 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:35:37,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062419782] [2024-11-13 16:35:37,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062419782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:35:37,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:35:37,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2024-11-13 16:35:37,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720683510] [2024-11-13 16:35:37,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:35:37,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 16:35:37,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:35:37,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 16:35:37,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=328, Unknown=3, NotChecked=74, Total=462 [2024-11-13 16:35:37,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 207 [2024-11-13 16:35:37,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 190 transitions, 669 flow. Second operand has 22 states, 22 states have (on average 41.54545454545455) internal successors, (914), 22 states have internal predecessors, (914), 0 states have call successors, (0), 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 16:35:37,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:35:37,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 207 [2024-11-13 16:35:37,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:35:54,720 INFO L124 PetriNetUnfolderBase]: 47994/84861 cut-off events. [2024-11-13 16:35:54,720 INFO L125 PetriNetUnfolderBase]: For 820/820 co-relation queries the response was YES. [2024-11-13 16:35:55,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157870 conditions, 84861 events. 47994/84861 cut-off events. For 820/820 co-relation queries the response was YES. Maximal size of possible extension queue 2538. Compared 826570 event pairs, 43378 based on Foata normal form. 6/53321 useless extension candidates. Maximal degree in co-relation 157792. Up to 70881 conditions per place. [2024-11-13 16:35:55,425 INFO L140 encePairwiseOnDemand]: 197/207 looper letters, 127 selfloop transitions, 28 changer transitions 0/195 dead transitions. [2024-11-13 16:35:55,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 195 transitions, 993 flow [2024-11-13 16:35:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:35:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 16:35:55,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 699 transitions. [2024-11-13 16:35:55,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2412008281573499 [2024-11-13 16:35:55,429 INFO L175 Difference]: Start difference. First operand has 206 places, 190 transitions, 669 flow. Second operand 14 states and 699 transitions. [2024-11-13 16:35:55,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 195 transitions, 993 flow [2024-11-13 16:35:55,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 195 transitions, 956 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-13 16:35:55,437 INFO L231 Difference]: Finished difference. Result has 217 places, 192 transitions, 702 flow [2024-11-13 16:35:55,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=702, PETRI_PLACES=217, PETRI_TRANSITIONS=192} [2024-11-13 16:35:55,438 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 41 predicate places. [2024-11-13 16:35:55,438 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 192 transitions, 702 flow [2024-11-13 16:35:55,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 41.54545454545455) internal successors, (914), 22 states have internal predecessors, (914), 0 states have call successors, (0), 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 16:35:55,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:35:55,439 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2024-11-13 16:35:55,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 16:35:55,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:35:55,640 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:35:55,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:35:55,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1813303820, now seen corresponding path program 2 times [2024-11-13 16:35:55,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:35:55,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131671806] [2024-11-13 16:35:55,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:35:55,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:35:55,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:35:55,643 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:35:55,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 16:35:56,250 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:35:56,250 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:35:56,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:35:56,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:35:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:56,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:35:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:35:56,572 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:35:56,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131671806] [2024-11-13 16:35:56,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131671806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:35:56,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:35:56,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-13 16:35:56,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805202519] [2024-11-13 16:35:56,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:35:56,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:35:56,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:35:56,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:35:56,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:35:56,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2024-11-13 16:35:56,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 192 transitions, 702 flow. Second operand has 12 states, 12 states have (on average 111.91666666666667) internal successors, (1343), 12 states have internal predecessors, (1343), 0 states have call successors, (0), 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 16:35:56,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:35:56,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2024-11-13 16:35:56,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:36:00,493 INFO L124 PetriNetUnfolderBase]: 7464/17737 cut-off events. [2024-11-13 16:36:00,493 INFO L125 PetriNetUnfolderBase]: For 792/794 co-relation queries the response was YES. [2024-11-13 16:36:00,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30090 conditions, 17737 events. 7464/17737 cut-off events. For 792/794 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 171690 event pairs, 6385 based on Foata normal form. 12/15348 useless extension candidates. Maximal degree in co-relation 30012. Up to 11041 conditions per place. [2024-11-13 16:36:00,647 INFO L140 encePairwiseOnDemand]: 203/207 looper letters, 122 selfloop transitions, 23 changer transitions 0/244 dead transitions. [2024-11-13 16:36:00,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 244 transitions, 1476 flow [2024-11-13 16:36:00,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:36:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 16:36:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1421 transitions. [2024-11-13 16:36:00,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.572061191626409 [2024-11-13 16:36:00,651 INFO L175 Difference]: Start difference. First operand has 217 places, 192 transitions, 702 flow. Second operand 12 states and 1421 transitions. [2024-11-13 16:36:00,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 244 transitions, 1476 flow [2024-11-13 16:36:00,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 244 transitions, 1320 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-13 16:36:00,660 INFO L231 Difference]: Finished difference. Result has 224 places, 205 transitions, 903 flow [2024-11-13 16:36:00,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=903, PETRI_PLACES=224, PETRI_TRANSITIONS=205} [2024-11-13 16:36:00,661 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 48 predicate places. [2024-11-13 16:36:00,661 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 205 transitions, 903 flow [2024-11-13 16:36:00,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 111.91666666666667) internal successors, (1343), 12 states have internal predecessors, (1343), 0 states have call successors, (0), 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 16:36:00,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:36:00,662 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2024-11-13 16:36:00,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 16:36:00,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:36:00,863 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-13 16:36:00,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:36:00,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1433851764, now seen corresponding path program 3 times [2024-11-13 16:36:00,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:36:00,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632155164] [2024-11-13 16:36:00,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:36:00,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:36:00,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:36:00,867 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:36:00,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_228db932-ca49-47b4-bfd1-43bd911684b0/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process