./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_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_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/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_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/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_b14b3599-3251-4b83-8468-0ed14384b98a/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 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:51:32,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:51:32,508 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 14:51:32,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:51:32,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:51:32,549 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:51:32,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:51:32,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:51:32,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:51:32,550 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:51:32,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:51:32,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:51:32,550 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:51:32,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:51:32,551 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:51:32,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:51:32,551 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:51:32,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:51:32,551 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:51:32,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:51:32,551 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:51:32,551 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:51:32,551 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:51:32,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:51:32,552 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:51:32,552 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:51:32,552 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:51:32,552 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:51:32,552 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:51:32,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:51:32,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:51:32,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:51:32,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:51:32,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:51:32,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:51:32,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:51:32,553 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:51:32,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:51:32,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:51:32,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:51:32,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:51:32,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:51:32,554 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_b14b3599-3251-4b83-8468-0ed14384b98a/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 -> 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 [2024-11-13 14:51:32,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:51:32,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:51:32,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:51:32,909 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:51:32,909 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:51:32,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i Unable to find full path for "g++" [2024-11-13 14:51:34,711 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:51:35,092 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:51:35,093 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2024-11-13 14:51:35,113 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/data/34bcc0ecd/79b260018e5f454584c6c4463b3079b1/FLAGffccd680b [2024-11-13 14:51:35,133 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/data/34bcc0ecd/79b260018e5f454584c6c4463b3079b1 [2024-11-13 14:51:35,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:51:35,137 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:51:35,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:51:35,138 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:51:35,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:51:35,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:51:35" (1/1) ... [2024-11-13 14:51:35,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd48cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:35, skipping insertion in model container [2024-11-13 14:51:35,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:51:35" (1/1) ... [2024-11-13 14:51:35,184 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:51:35,700 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:35,700 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:35,700 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:35,701 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:35,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:51:35,793 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-13 14:51:35,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@dc0d5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:35, skipping insertion in model container [2024-11-13 14:51:35,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:51:35,794 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-13 14:51:35,796 INFO L158 Benchmark]: Toolchain (without parser) took 658.55ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 100.1MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:51:35,796 INFO L158 Benchmark]: CDTParser took 1.07ms. Allocated memory is still 142.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:51:35,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 656.22ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 100.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:51:35,798 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07ms. Allocated memory is still 142.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 656.22ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 100.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1051]: 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_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/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_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/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_b14b3599-3251-4b83-8468-0ed14384b98a/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 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:51:38,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:51:38,615 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 14:51:38,630 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:51:38,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:51:38,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:51:38,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:51:38,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:51:38,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:51:38,675 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:51:38,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:51:38,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:51:38,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:51:38,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:51:38,677 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:51:38,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:51:38,678 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:51:38,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:51:38,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:51:38,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:51:38,679 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:51:38,679 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:51:38,679 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:51:38,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:51:38,680 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:51:38,680 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 14:51:38,680 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:51:38,680 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 14:51:38,680 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:51:38,680 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:51:38,680 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:51:38,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:51:38,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:51:38,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:51:38,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:51:38,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:51:38,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:51:38,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:51:38,683 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 14:51:38,683 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 14:51:38,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:51:38,683 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:51:38,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:51:38,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:51:38,684 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_b14b3599-3251-4b83-8468-0ed14384b98a/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 -> 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 [2024-11-13 14:51:39,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:51:39,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:51:39,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:51:39,051 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:51:39,051 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:51:39,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i Unable to find full path for "g++" [2024-11-13 14:51:41,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:51:41,600 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:51:41,603 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2024-11-13 14:51:41,629 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/data/9fe20670a/052952262b6246dd9578f60c5a5d3f32/FLAG73796c8bc [2024-11-13 14:51:41,656 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/data/9fe20670a/052952262b6246dd9578f60c5a5d3f32 [2024-11-13 14:51:41,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:51:41,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:51:41,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:51:41,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:51:41,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:51:41,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:51:41" (1/1) ... [2024-11-13 14:51:41,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e149f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:41, skipping insertion in model container [2024-11-13 14:51:41,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:51:41" (1/1) ... [2024-11-13 14:51:41,726 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:51:42,199 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:42,199 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:42,199 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:42,200 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:42,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:51:42,309 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-13 14:51:42,320 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:51:42,397 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:42,403 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:42,403 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:42,404 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:42,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:51:42,464 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:51:42,537 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:42,539 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:42,540 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:42,541 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-13 14:51:42,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:51:42,689 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:51:42,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42 WrapperNode [2024-11-13 14:51:42,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:51:42,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:51:42,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:51:42,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:51:42,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (1/1) ... [2024-11-13 14:51:42,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (1/1) ... [2024-11-13 14:51:42,776 INFO L138 Inliner]: procedures = 287, calls = 169, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 335 [2024-11-13 14:51:42,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:51:42,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:51:42,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:51:42,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:51:42,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (1/1) ... [2024-11-13 14:51:42,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (1/1) ... [2024-11-13 14:51:42,797 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (1/1) ... [2024-11-13 14:51:42,849 INFO L175 MemorySlicer]: Split 143 memory accesses to 4 slices as follows [2, 8, 2, 131]. 92 percent of accesses are in the largest equivalence class. The 120 initializations are split as follows [2, 8, 0, 110]. The 13 writes are split as follows [0, 0, 1, 12]. [2024-11-13 14:51:42,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (1/1) ... [2024-11-13 14:51:42,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (1/1) ... [2024-11-13 14:51:42,894 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (1/1) ... [2024-11-13 14:51:42,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (1/1) ... [2024-11-13 14:51:42,906 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (1/1) ... [2024-11-13 14:51:42,908 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (1/1) ... [2024-11-13 14:51:42,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:51:42,914 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:51:42,914 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:51:42,914 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:51:42,915 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (1/1) ... [2024-11-13 14:51:42,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:51:42,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:51:42,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:51:42,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:51:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 14:51:42,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 14:51:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 14:51:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-13 14:51:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:51:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:51:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:51:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 14:51:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 14:51:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:51:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 14:51:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 14:51:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 14:51:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-13 14:51:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 14:51:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 14:51:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 14:51:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 14:51:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2024-11-13 14:51:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2024-11-13 14:51:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2024-11-13 14:51:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2024-11-13 14:51:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 14:51:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 14:51:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 14:51:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-13 14:51:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-13 14:51:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-13 14:51:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-13 14:51:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-13 14:51:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 14:51:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 14:51:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:51:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:51:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:51:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:51:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 14:51:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 14:51:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-13 14:51:42,996 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-13 14:51:42,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:51:42,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:51:42,999 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:51:43,220 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:51:43,221 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:51:44,687 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:51:44,687 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:51:48,708 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:51:48,710 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-13 14:51:48,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:51:48 BoogieIcfgContainer [2024-11-13 14:51:48,711 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:51:48,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:51:48,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:51:48,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:51:48,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:51:41" (1/3) ... [2024-11-13 14:51:48,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d87921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:51:48, skipping insertion in model container [2024-11-13 14:51:48,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:42" (2/3) ... [2024-11-13 14:51:48,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d87921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:51:48, skipping insertion in model container [2024-11-13 14:51:48,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:51:48" (3/3) ... [2024-11-13 14:51:48,724 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2024-11-13 14:51:48,745 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:51:48,747 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_92-evilcollapse_racing.i that has 2 procedures, 115 locations, 1 initial locations, 11 loop locations, and 48 error locations. [2024-11-13 14:51:48,747 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:51:48,882 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-13 14:51:48,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 133 transitions, 273 flow [2024-11-13 14:51:49,046 INFO L124 PetriNetUnfolderBase]: 18/145 cut-off events. [2024-11-13 14:51:49,049 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:51:49,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 145 events. 18/145 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 530 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2024-11-13 14:51:49,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 133 transitions, 273 flow [2024-11-13 14:51:49,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 133 transitions, 273 flow [2024-11-13 14:51:49,077 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:51:49,092 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;@7d513d2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:51:49,092 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-11-13 14:51:49,116 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:51:49,116 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 14:51:49,117 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:51:49,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:51:49,118 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:51:49,119 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:51:49,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:51:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash 909381, now seen corresponding path program 1 times [2024-11-13 14:51:49,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:51:49,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290057190] [2024-11-13 14:51:49,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:51:49,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:49,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:51:49,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:51:49,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:51:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:51:49,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:51:49,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:51:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:51:49,807 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:51:49,808 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:51:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290057190] [2024-11-13 14:51:49,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290057190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:51:49,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:51:49,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:51:49,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621924051] [2024-11-13 14:51:49,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:51:49,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:51:49,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:51:49,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:51:49,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:51:50,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 133 [2024-11-13 14:51:50,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 133 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:50,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:51:50,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 133 [2024-11-13 14:51:50,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:51:50,866 INFO L124 PetriNetUnfolderBase]: 125/490 cut-off events. [2024-11-13 14:51:50,866 INFO L125 PetriNetUnfolderBase]: For 4/5 co-relation queries the response was YES. [2024-11-13 14:51:50,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 490 events. 125/490 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2675 event pairs, 64 based on Foata normal form. 52/431 useless extension candidates. Maximal degree in co-relation 675. Up to 177 conditions per place. [2024-11-13 14:51:50,872 INFO L140 encePairwiseOnDemand]: 112/133 looper letters, 66 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2024-11-13 14:51:50,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 139 transitions, 425 flow [2024-11-13 14:51:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:51:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:51:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2024-11-13 14:51:50,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7048872180451128 [2024-11-13 14:51:50,893 INFO L175 Difference]: Start difference. First operand has 118 places, 133 transitions, 273 flow. Second operand 4 states and 375 transitions. [2024-11-13 14:51:50,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 139 transitions, 425 flow [2024-11-13 14:51:50,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 139 transitions, 425 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:51:50,909 INFO L231 Difference]: Finished difference. Result has 117 places, 116 transitions, 253 flow [2024-11-13 14:51:50,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=117, PETRI_TRANSITIONS=116} [2024-11-13 14:51:50,918 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2024-11-13 14:51:50,918 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 116 transitions, 253 flow [2024-11-13 14:51:50,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:50,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:51:50,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:51:50,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:51:51,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:51,120 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:51:51,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:51:51,120 INFO L85 PathProgramCache]: Analyzing trace with hash 909382, now seen corresponding path program 1 times [2024-11-13 14:51:51,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:51:51,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107508185] [2024-11-13 14:51:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:51:51,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:51,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:51:51,125 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:51:51,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:51:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:51:51,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:51:51,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:51:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:51:51,752 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:51:51,752 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:51:51,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107508185] [2024-11-13 14:51:51,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107508185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:51:51,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:51:51,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:51:51,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539139839] [2024-11-13 14:51:51,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:51:51,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:51:51,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:51:51,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:51:51,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:51:52,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 133 [2024-11-13 14:51:52,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 116 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:52,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:51:52,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 133 [2024-11-13 14:51:52,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:51:52,671 INFO L124 PetriNetUnfolderBase]: 127/521 cut-off events. [2024-11-13 14:51:52,671 INFO L125 PetriNetUnfolderBase]: For 25/26 co-relation queries the response was YES. [2024-11-13 14:51:52,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 521 events. 127/521 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2796 event pairs, 105 based on Foata normal form. 3/410 useless extension candidates. Maximal degree in co-relation 743. Up to 274 conditions per place. [2024-11-13 14:51:52,676 INFO L140 encePairwiseOnDemand]: 125/133 looper letters, 47 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2024-11-13 14:51:52,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 120 transitions, 371 flow [2024-11-13 14:51:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:51:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:51:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2024-11-13 14:51:52,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6447368421052632 [2024-11-13 14:51:52,679 INFO L175 Difference]: Start difference. First operand has 117 places, 116 transitions, 253 flow. Second operand 4 states and 343 transitions. [2024-11-13 14:51:52,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 120 transitions, 371 flow [2024-11-13 14:51:52,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 359 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 14:51:52,688 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 286 flow [2024-11-13 14:51:52,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2024-11-13 14:51:52,689 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-11-13 14:51:52,689 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 286 flow [2024-11-13 14:51:52,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:52,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:51:52,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:51:52,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:51:52,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:52,891 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:51:52,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:51:52,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1322429968, now seen corresponding path program 1 times [2024-11-13 14:51:52,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:51:52,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443948440] [2024-11-13 14:51:52,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:51:52,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:52,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:51:52,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:51:52,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:51:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:51:53,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:51:53,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:51:53,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:51:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:51:53,309 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:51:53,310 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:51:53,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443948440] [2024-11-13 14:51:53,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443948440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:51:53,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:51:53,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:51:53,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490765995] [2024-11-13 14:51:53,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:51:53,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:51:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:51:53,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:51:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:51:53,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 133 [2024-11-13 14:51:53,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:53,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:51:53,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 133 [2024-11-13 14:51:53,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:51:53,806 INFO L124 PetriNetUnfolderBase]: 127/520 cut-off events. [2024-11-13 14:51:53,807 INFO L125 PetriNetUnfolderBase]: For 14/15 co-relation queries the response was YES. [2024-11-13 14:51:53,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 520 events. 127/520 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2810 event pairs, 105 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 811. Up to 270 conditions per place. [2024-11-13 14:51:53,811 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 45 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2024-11-13 14:51:53,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 119 transitions, 380 flow [2024-11-13 14:51:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:51:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:51:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-11-13 14:51:53,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6766917293233082 [2024-11-13 14:51:53,816 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 286 flow. Second operand 3 states and 270 transitions. [2024-11-13 14:51:53,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 119 transitions, 380 flow [2024-11-13 14:51:53,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 119 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:51:53,820 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 287 flow [2024-11-13 14:51:53,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2024-11-13 14:51:53,821 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-11-13 14:51:53,821 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 287 flow [2024-11-13 14:51:53,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:53,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:51:53,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:51:53,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:51:54,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:54,022 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:51:54,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:51:54,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1322429969, now seen corresponding path program 1 times [2024-11-13 14:51:54,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:51:54,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366102921] [2024-11-13 14:51:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:51:54,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:54,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:51:54,026 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:51:54,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:51:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:51:54,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:51:54,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:51:54,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:51:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:51:54,525 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:51:54,525 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:51:54,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366102921] [2024-11-13 14:51:54,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366102921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:51:54,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:51:54,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:51:54,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128678159] [2024-11-13 14:51:54,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:51:54,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:51:54,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:51:54,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:51:54,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:51:54,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 133 [2024-11-13 14:51:54,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:54,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:51:54,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 133 [2024-11-13 14:51:54,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:51:55,087 INFO L124 PetriNetUnfolderBase]: 127/519 cut-off events. [2024-11-13 14:51:55,088 INFO L125 PetriNetUnfolderBase]: For 16/17 co-relation queries the response was YES. [2024-11-13 14:51:55,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 519 events. 127/519 cut-off events. For 16/17 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2810 event pairs, 105 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 810. Up to 270 conditions per place. [2024-11-13 14:51:55,092 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 45 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2024-11-13 14:51:55,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 381 flow [2024-11-13 14:51:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:51:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:51:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-11-13 14:51:55,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6766917293233082 [2024-11-13 14:51:55,097 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 287 flow. Second operand 3 states and 270 transitions. [2024-11-13 14:51:55,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 381 flow [2024-11-13 14:51:55,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 118 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:51:55,105 INFO L231 Difference]: Finished difference. Result has 118 places, 118 transitions, 285 flow [2024-11-13 14:51:55,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=118, PETRI_TRANSITIONS=118} [2024-11-13 14:51:55,106 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 0 predicate places. [2024-11-13 14:51:55,106 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 118 transitions, 285 flow [2024-11-13 14:51:55,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:55,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:51:55,106 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-13 14:51:55,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:51:55,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:55,309 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:51:55,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:51:55,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1954338871, now seen corresponding path program 1 times [2024-11-13 14:51:55,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:51:55,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822482202] [2024-11-13 14:51:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:51:55,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:55,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:51:55,313 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:51:55,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:51:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:51:55,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:51:55,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:51:55,792 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 14:51:55,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:51:55,792 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:51:55,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822482202] [2024-11-13 14:51:55,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822482202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:51:55,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:51:55,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:51:55,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28009260] [2024-11-13 14:51:55,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:51:55,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:51:55,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:51:55,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:51:55,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:51:55,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 133 [2024-11-13 14:51:55,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:55,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:51:55,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 133 [2024-11-13 14:51:55,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:51:56,234 INFO L124 PetriNetUnfolderBase]: 126/541 cut-off events. [2024-11-13 14:51:56,235 INFO L125 PetriNetUnfolderBase]: For 18/19 co-relation queries the response was YES. [2024-11-13 14:51:56,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 541 events. 126/541 cut-off events. For 18/19 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2814 event pairs, 105 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 841. Up to 270 conditions per place. [2024-11-13 14:51:56,240 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 49 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-13 14:51:56,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 122 transitions, 401 flow [2024-11-13 14:51:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:51:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:51:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-11-13 14:51:56,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6967418546365914 [2024-11-13 14:51:56,243 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 285 flow. Second operand 3 states and 278 transitions. [2024-11-13 14:51:56,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 122 transitions, 401 flow [2024-11-13 14:51:56,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 122 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:51:56,250 INFO L231 Difference]: Finished difference. Result has 119 places, 118 transitions, 290 flow [2024-11-13 14:51:56,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=119, PETRI_TRANSITIONS=118} [2024-11-13 14:51:56,255 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-11-13 14:51:56,255 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 118 transitions, 290 flow [2024-11-13 14:51:56,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:56,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:51:56,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:51:56,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:51:56,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:56,456 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:51:56,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:51:56,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1954343012, now seen corresponding path program 1 times [2024-11-13 14:51:56,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:51:56,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645130834] [2024-11-13 14:51:56,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:51:56,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:56,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:51:56,461 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:51:56,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:51:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:51:56,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:51:56,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:51:56,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:51:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:51:56,953 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:51:56,953 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:51:56,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645130834] [2024-11-13 14:51:56,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645130834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:51:56,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:51:56,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:51:56,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549675765] [2024-11-13 14:51:56,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:51:56,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:51:56,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:51:56,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:51:56,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:51:57,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 133 [2024-11-13 14:51:57,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 118 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:57,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:51:57,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 133 [2024-11-13 14:51:57,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:51:57,667 INFO L124 PetriNetUnfolderBase]: 126/537 cut-off events. [2024-11-13 14:51:57,667 INFO L125 PetriNetUnfolderBase]: For 33/34 co-relation queries the response was YES. [2024-11-13 14:51:57,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 537 events. 126/537 cut-off events. For 33/34 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2790 event pairs, 105 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 837. Up to 274 conditions per place. [2024-11-13 14:51:57,671 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 46 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-11-13 14:51:57,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 116 transitions, 386 flow [2024-11-13 14:51:57,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:51:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:51:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2024-11-13 14:51:57,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6240601503759399 [2024-11-13 14:51:57,674 INFO L175 Difference]: Start difference. First operand has 119 places, 118 transitions, 290 flow. Second operand 4 states and 332 transitions. [2024-11-13 14:51:57,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 116 transitions, 386 flow [2024-11-13 14:51:57,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 116 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:51:57,678 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 291 flow [2024-11-13 14:51:57,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2024-11-13 14:51:57,679 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-11-13 14:51:57,679 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 291 flow [2024-11-13 14:51:57,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:57,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:51:57,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:51:57,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:51:57,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:57,881 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:51:57,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:51:57,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1954343013, now seen corresponding path program 1 times [2024-11-13 14:51:57,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:51:57,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104236625] [2024-11-13 14:51:57,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:51:57,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:57,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:51:57,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:51:57,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:51:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:51:58,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:51:58,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:51:58,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:51:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:51:58,284 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:51:58,284 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:51:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104236625] [2024-11-13 14:51:58,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104236625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:51:58,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:51:58,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:51:58,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657292080] [2024-11-13 14:51:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:51:58,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:51:58,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:51:58,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:51:58,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:51:58,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 133 [2024-11-13 14:51:58,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:58,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:51:58,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 133 [2024-11-13 14:51:58,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:51:58,985 INFO L124 PetriNetUnfolderBase]: 126/533 cut-off events. [2024-11-13 14:51:58,985 INFO L125 PetriNetUnfolderBase]: For 18/19 co-relation queries the response was YES. [2024-11-13 14:51:58,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 533 events. 126/533 cut-off events. For 18/19 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2787 event pairs, 105 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 841. Up to 272 conditions per place. [2024-11-13 14:51:58,988 INFO L140 encePairwiseOnDemand]: 126/133 looper letters, 43 selfloop transitions, 7 changer transitions 0/114 dead transitions. [2024-11-13 14:51:58,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 114 transitions, 387 flow [2024-11-13 14:51:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:51:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:51:58,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 393 transitions. [2024-11-13 14:51:58,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909774436090226 [2024-11-13 14:51:58,995 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 291 flow. Second operand 5 states and 393 transitions. [2024-11-13 14:51:58,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 114 transitions, 387 flow [2024-11-13 14:51:58,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 114 transitions, 379 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 14:51:58,998 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 293 flow [2024-11-13 14:51:58,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2024-11-13 14:51:58,999 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 0 predicate places. [2024-11-13 14:51:59,000 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 293 flow [2024-11-13 14:51:59,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:51:59,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:51:59,001 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:51:59,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:51:59,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:59,202 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:51:59,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:51:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1222897304, now seen corresponding path program 1 times [2024-11-13 14:51:59,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:51:59,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339880472] [2024-11-13 14:51:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:51:59,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:51:59,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:51:59,205 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:51:59,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:51:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:51:59,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:51:59,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:51:59,729 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-13 14:51:59,730 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 14:51:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:51:59,827 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:51:59,827 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:51:59,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339880472] [2024-11-13 14:51:59,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339880472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:51:59,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:51:59,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:51:59,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122219212] [2024-11-13 14:51:59,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:51:59,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:51:59,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:51:59,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:51:59,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:52:00,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 133 [2024-11-13 14:52:00,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:00,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:52:00,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 133 [2024-11-13 14:52:00,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:52:00,887 INFO L124 PetriNetUnfolderBase]: 125/503 cut-off events. [2024-11-13 14:52:00,888 INFO L125 PetriNetUnfolderBase]: For 18/19 co-relation queries the response was YES. [2024-11-13 14:52:00,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 503 events. 125/503 cut-off events. For 18/19 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2636 event pairs, 64 based on Foata normal form. 2/397 useless extension candidates. Maximal degree in co-relation 816. Up to 184 conditions per place. [2024-11-13 14:52:00,891 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 69 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2024-11-13 14:52:00,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 135 transitions, 483 flow [2024-11-13 14:52:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:52:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:52:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2024-11-13 14:52:00,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6541353383458647 [2024-11-13 14:52:00,895 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 293 flow. Second operand 4 states and 348 transitions. [2024-11-13 14:52:00,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 135 transitions, 483 flow [2024-11-13 14:52:00,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 135 transitions, 469 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 14:52:00,900 INFO L231 Difference]: Finished difference. Result has 115 places, 112 transitions, 285 flow [2024-11-13 14:52:00,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2024-11-13 14:52:00,904 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2024-11-13 14:52:00,905 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 285 flow [2024-11-13 14:52:00,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:00,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:52:00,905 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:52:00,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:52:01,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:01,106 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:52:01,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:01,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1222897303, now seen corresponding path program 1 times [2024-11-13 14:52:01,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:52:01,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414749730] [2024-11-13 14:52:01,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:01,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:01,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:52:01,110 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:52:01,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:52:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:01,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 14:52:01,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:52:01,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:52:01,710 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 14:52:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:52:01,804 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:52:01,804 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:52:01,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414749730] [2024-11-13 14:52:01,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414749730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:52:01,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:52:01,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:52:01,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772747453] [2024-11-13 14:52:01,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:52:01,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:52:01,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:52:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:52:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:52:02,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 133 [2024-11-13 14:52:02,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 285 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:02,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:52:02,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 133 [2024-11-13 14:52:02,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:52:02,877 INFO L124 PetriNetUnfolderBase]: 128/561 cut-off events. [2024-11-13 14:52:02,877 INFO L125 PetriNetUnfolderBase]: For 52/53 co-relation queries the response was YES. [2024-11-13 14:52:02,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 561 events. 128/561 cut-off events. For 52/53 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3043 event pairs, 106 based on Foata normal form. 2/435 useless extension candidates. Maximal degree in co-relation 857. Up to 281 conditions per place. [2024-11-13 14:52:02,880 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 53 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2024-11-13 14:52:02,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 119 transitions, 431 flow [2024-11-13 14:52:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:52:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:52:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2024-11-13 14:52:02,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6409774436090225 [2024-11-13 14:52:02,882 INFO L175 Difference]: Start difference. First operand has 115 places, 112 transitions, 285 flow. Second operand 4 states and 341 transitions. [2024-11-13 14:52:02,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 119 transitions, 431 flow [2024-11-13 14:52:02,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 14:52:02,886 INFO L231 Difference]: Finished difference. Result has 117 places, 116 transitions, 321 flow [2024-11-13 14:52:02,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=117, PETRI_TRANSITIONS=116} [2024-11-13 14:52:02,889 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2024-11-13 14:52:02,890 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 116 transitions, 321 flow [2024-11-13 14:52:02,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:02,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:52:02,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:52:02,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:52:03,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:03,091 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:52:03,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:03,091 INFO L85 PathProgramCache]: Analyzing trace with hash 744890235, now seen corresponding path program 1 times [2024-11-13 14:52:03,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:52:03,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638377166] [2024-11-13 14:52:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:03,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:03,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:52:03,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:52:03,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:52:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:03,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 14:52:03,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:52:03,785 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 14:52:03,795 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 14:52:03,883 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 11 [2024-11-13 14:52:03,902 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 11 [2024-11-13 14:52:04,038 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 14:52:04,038 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 14 treesize of output 13 [2024-11-13 14:52:04,075 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:52:04,075 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 14:52:04,162 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 16 treesize of output 11 [2024-11-13 14:52:04,186 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 16 treesize of output 11 [2024-11-13 14:52:04,246 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 16 treesize of output 11 [2024-11-13 14:52:04,259 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 16 treesize of output 11 [2024-11-13 14:52:04,301 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 16 treesize of output 11 [2024-11-13 14:52:04,311 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 16 treesize of output 11 [2024-11-13 14:52:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:52:04,377 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:52:04,377 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:52:04,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638377166] [2024-11-13 14:52:04,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638377166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:52:04,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:52:04,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:52:04,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277051713] [2024-11-13 14:52:04,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:52:04,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:52:04,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:52:04,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:52:04,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:52:06,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 133 [2024-11-13 14:52:06,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 116 transitions, 321 flow. Second operand has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:06,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:52:06,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 133 [2024-11-13 14:52:06,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:52:07,591 INFO L124 PetriNetUnfolderBase]: 128/560 cut-off events. [2024-11-13 14:52:07,591 INFO L125 PetriNetUnfolderBase]: For 26/27 co-relation queries the response was YES. [2024-11-13 14:52:07,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 560 events. 128/560 cut-off events. For 26/27 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3013 event pairs, 106 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 868. Up to 294 conditions per place. [2024-11-13 14:52:07,595 INFO L140 encePairwiseOnDemand]: 122/133 looper letters, 69 selfloop transitions, 10 changer transitions 0/132 dead transitions. [2024-11-13 14:52:07,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 132 transitions, 517 flow [2024-11-13 14:52:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:52:07,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 14:52:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 639 transitions. [2024-11-13 14:52:07,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48045112781954885 [2024-11-13 14:52:07,598 INFO L175 Difference]: Start difference. First operand has 117 places, 116 transitions, 321 flow. Second operand 10 states and 639 transitions. [2024-11-13 14:52:07,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 132 transitions, 517 flow [2024-11-13 14:52:07,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 132 transitions, 515 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:52:07,602 INFO L231 Difference]: Finished difference. Result has 130 places, 120 transitions, 371 flow [2024-11-13 14:52:07,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=371, PETRI_PLACES=130, PETRI_TRANSITIONS=120} [2024-11-13 14:52:07,603 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 12 predicate places. [2024-11-13 14:52:07,603 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 120 transitions, 371 flow [2024-11-13 14:52:07,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:07,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:52:07,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:52:07,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:52:07,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:07,805 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:52:07,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash 744890234, now seen corresponding path program 1 times [2024-11-13 14:52:07,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:52:07,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504244932] [2024-11-13 14:52:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:07,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:07,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:52:07,808 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:52:07,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:52:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:08,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 14:52:08,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:52:08,406 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 14:52:08,454 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 11 [2024-11-13 14:52:08,535 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:52:08,536 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 14:52:08,599 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 16 treesize of output 11 [2024-11-13 14:52:08,654 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 16 treesize of output 11 [2024-11-13 14:52:08,699 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 16 treesize of output 11 [2024-11-13 14:52:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:52:08,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:52:08,781 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:52:08,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504244932] [2024-11-13 14:52:08,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504244932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:52:08,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:52:08,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:52:08,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144472971] [2024-11-13 14:52:08,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:52:08,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:52:08,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:52:08,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:52:08,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:52:11,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2024-11-13 14:52:11,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 120 transitions, 371 flow. Second operand has 10 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:11,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:52:11,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2024-11-13 14:52:11,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:52:12,401 INFO L124 PetriNetUnfolderBase]: 128/559 cut-off events. [2024-11-13 14:52:12,401 INFO L125 PetriNetUnfolderBase]: For 37/38 co-relation queries the response was YES. [2024-11-13 14:52:12,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 559 events. 128/559 cut-off events. For 37/38 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3007 event pairs, 106 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 906. Up to 290 conditions per place. [2024-11-13 14:52:12,404 INFO L140 encePairwiseOnDemand]: 121/133 looper letters, 66 selfloop transitions, 11 changer transitions 0/132 dead transitions. [2024-11-13 14:52:12,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 132 transitions, 555 flow [2024-11-13 14:52:12,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:52:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 14:52:12,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 715 transitions. [2024-11-13 14:52:12,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48872180451127817 [2024-11-13 14:52:12,407 INFO L175 Difference]: Start difference. First operand has 130 places, 120 transitions, 371 flow. Second operand 11 states and 715 transitions. [2024-11-13 14:52:12,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 132 transitions, 555 flow [2024-11-13 14:52:12,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 132 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:52:12,411 INFO L231 Difference]: Finished difference. Result has 139 places, 121 transitions, 397 flow [2024-11-13 14:52:12,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=397, PETRI_PLACES=139, PETRI_TRANSITIONS=121} [2024-11-13 14:52:12,412 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 21 predicate places. [2024-11-13 14:52:12,412 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 121 transitions, 397 flow [2024-11-13 14:52:12,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:12,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:52:12,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:52:12,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:52:12,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:12,613 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:52:12,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1616761655, now seen corresponding path program 1 times [2024-11-13 14:52:12,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:52:12,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047672839] [2024-11-13 14:52:12,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:12,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:12,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:52:12,616 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:52:12,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:52:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:13,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:52:13,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:52:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:52:13,062 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:52:13,062 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:52:13,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047672839] [2024-11-13 14:52:13,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047672839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:52:13,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:52:13,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:52:13,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369570927] [2024-11-13 14:52:13,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:52:13,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:52:13,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:52:13,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:52:13,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:52:13,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 133 [2024-11-13 14:52:13,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 121 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:13,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:52:13,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 133 [2024-11-13 14:52:13,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:52:13,852 INFO L124 PetriNetUnfolderBase]: 127/549 cut-off events. [2024-11-13 14:52:13,852 INFO L125 PetriNetUnfolderBase]: For 42/43 co-relation queries the response was YES. [2024-11-13 14:52:13,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 549 events. 127/549 cut-off events. For 42/43 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2948 event pairs, 105 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 895. Up to 273 conditions per place. [2024-11-13 14:52:13,856 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 49 selfloop transitions, 11 changer transitions 0/119 dead transitions. [2024-11-13 14:52:13,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 119 transitions, 513 flow [2024-11-13 14:52:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:52:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:52:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 395 transitions. [2024-11-13 14:52:13,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5939849624060151 [2024-11-13 14:52:13,858 INFO L175 Difference]: Start difference. First operand has 139 places, 121 transitions, 397 flow. Second operand 5 states and 395 transitions. [2024-11-13 14:52:13,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 119 transitions, 513 flow [2024-11-13 14:52:13,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 119 transitions, 493 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-13 14:52:13,862 INFO L231 Difference]: Finished difference. Result has 132 places, 119 transitions, 395 flow [2024-11-13 14:52:13,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=132, PETRI_TRANSITIONS=119} [2024-11-13 14:52:13,863 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 14 predicate places. [2024-11-13 14:52:13,865 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 119 transitions, 395 flow [2024-11-13 14:52:13,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:13,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:52:13,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:52:13,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 14:52:14,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:14,066 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:52:14,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:14,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1616761656, now seen corresponding path program 1 times [2024-11-13 14:52:14,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:52:14,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759649849] [2024-11-13 14:52:14,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:14,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:14,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:52:14,069 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:52:14,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:52:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:14,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:52:14,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:52:14,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:52:14,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:52:14,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:52:14,698 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:52:14,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759649849] [2024-11-13 14:52:14,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759649849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:52:14,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:52:14,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:52:14,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038900434] [2024-11-13 14:52:14,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:52:14,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:52:14,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:52:14,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:52:14,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:52:15,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 133 [2024-11-13 14:52:15,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 119 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:15,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:52:15,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 133 [2024-11-13 14:52:15,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:52:15,417 INFO L124 PetriNetUnfolderBase]: 127/541 cut-off events. [2024-11-13 14:52:15,417 INFO L125 PetriNetUnfolderBase]: For 90/91 co-relation queries the response was YES. [2024-11-13 14:52:15,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 541 events. 127/541 cut-off events. For 90/91 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2915 event pairs, 105 based on Foata normal form. 8/444 useless extension candidates. Maximal degree in co-relation 887. Up to 271 conditions per place. [2024-11-13 14:52:15,421 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 46 selfloop transitions, 9 changer transitions 0/117 dead transitions. [2024-11-13 14:52:15,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 117 transitions, 501 flow [2024-11-13 14:52:15,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:52:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:52:15,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2024-11-13 14:52:15,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6353383458646616 [2024-11-13 14:52:15,423 INFO L175 Difference]: Start difference. First operand has 132 places, 119 transitions, 395 flow. Second operand 4 states and 338 transitions. [2024-11-13 14:52:15,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 117 transitions, 501 flow [2024-11-13 14:52:15,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 117 transitions, 479 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 14:52:15,427 INFO L231 Difference]: Finished difference. Result has 129 places, 117 transitions, 387 flow [2024-11-13 14:52:15,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=387, PETRI_PLACES=129, PETRI_TRANSITIONS=117} [2024-11-13 14:52:15,428 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 11 predicate places. [2024-11-13 14:52:15,428 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 117 transitions, 387 flow [2024-11-13 14:52:15,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:15,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:52:15,429 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:52:15,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 14:52:15,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:15,629 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:52:15,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:15,630 INFO L85 PathProgramCache]: Analyzing trace with hash -236388680, now seen corresponding path program 1 times [2024-11-13 14:52:15,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:52:15,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317174604] [2024-11-13 14:52:15,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:15,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:15,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:52:15,632 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:52:15,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:52:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:16,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:52:16,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:52:16,206 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 14:52:16,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:52:16,246 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 14:52:16,246 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:52:16,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317174604] [2024-11-13 14:52:16,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317174604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:52:16,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:52:16,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-13 14:52:16,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739693760] [2024-11-13 14:52:16,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:52:16,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:52:16,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:52:16,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:52:16,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:52:16,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 133 [2024-11-13 14:52:16,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 117 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:16,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:52:16,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 133 [2024-11-13 14:52:16,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:52:16,901 INFO L124 PetriNetUnfolderBase]: 127/591 cut-off events. [2024-11-13 14:52:16,901 INFO L125 PetriNetUnfolderBase]: For 154/155 co-relation queries the response was YES. [2024-11-13 14:52:16,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 591 events. 127/591 cut-off events. For 154/155 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3033 event pairs, 105 based on Foata normal form. 6/488 useless extension candidates. Maximal degree in co-relation 1010. Up to 267 conditions per place. [2024-11-13 14:52:16,904 INFO L140 encePairwiseOnDemand]: 129/133 looper letters, 63 selfloop transitions, 11 changer transitions 0/136 dead transitions. [2024-11-13 14:52:16,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 136 transitions, 657 flow [2024-11-13 14:52:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:52:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:52:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 519 transitions. [2024-11-13 14:52:16,906 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.650375939849624 [2024-11-13 14:52:16,906 INFO L175 Difference]: Start difference. First operand has 129 places, 117 transitions, 387 flow. Second operand 6 states and 519 transitions. [2024-11-13 14:52:16,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 136 transitions, 657 flow [2024-11-13 14:52:16,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 136 transitions, 613 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 14:52:16,910 INFO L231 Difference]: Finished difference. Result has 135 places, 122 transitions, 455 flow [2024-11-13 14:52:16,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=455, PETRI_PLACES=135, PETRI_TRANSITIONS=122} [2024-11-13 14:52:16,910 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 17 predicate places. [2024-11-13 14:52:16,911 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 122 transitions, 455 flow [2024-11-13 14:52:16,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:16,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:52:16,911 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:52:16,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 14:52:17,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:17,112 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:52:17,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1368731180, now seen corresponding path program 1 times [2024-11-13 14:52:17,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:52:17,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071053530] [2024-11-13 14:52:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:17,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:17,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:52:17,114 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:52:17,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:52:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:17,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 14:52:17,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:52:17,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:52:17,968 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 25 treesize of output 1 [2024-11-13 14:52:17,979 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 16 treesize of output 12 [2024-11-13 14:52:18,059 INFO L349 Elim1Store]: treesize reduction 31, result has 46.6 percent of original size [2024-11-13 14:52:18,059 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 23 treesize of output 31 [2024-11-13 14:52:18,125 INFO L349 Elim1Store]: treesize reduction 31, result has 36.7 percent of original size [2024-11-13 14:52:18,125 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 29 treesize of output 31 [2024-11-13 14:52:18,216 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 14:52:18,234 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 21 treesize of output 16 [2024-11-13 14:52:18,298 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 21 treesize of output 16 [2024-11-13 14:52:18,316 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 14:52:18,350 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 14:52:18,358 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 14:52:18,425 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 14:52:18,477 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 14:52:18,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:52:18,698 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (_ bv4 32) (bvmul (_ bv12 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_576 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_577) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_576) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_577) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-13 14:52:18,800 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (_ bv4 32) (bvmul (_ bv12 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_576 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_577) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_576) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_577) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-13 14:52:19,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:52:19,178 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 47 treesize of output 40 [2024-11-13 14:52:19,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:52:19,209 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 64 treesize of output 58 [2024-11-13 14:52:19,226 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 25 treesize of output 11 [2024-11-13 14:52:19,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:52:19,334 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 50 treesize of output 51 [2024-11-13 14:52:19,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:52:19,351 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 42 treesize of output 43 [2024-11-13 14:52:19,358 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:52:19,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:52:19,390 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 40 treesize of output 43 [2024-11-13 14:52:19,398 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:52:19,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:52:19,428 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 28 treesize of output 31 [2024-11-13 14:52:21,836 INFO L349 Elim1Store]: treesize reduction 10, result has 83.6 percent of original size [2024-11-13 14:52:21,836 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 14:52:22,650 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 14:52:22,650 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:52:22,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071053530] [2024-11-13 14:52:22,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071053530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:52:22,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:52:22,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2024-11-13 14:52:22,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813797682] [2024-11-13 14:52:22,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:52:22,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:52:22,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:52:22,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:52:22,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=327, Unknown=4, NotChecked=74, Total=462 [2024-11-13 14:52:22,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 133 [2024-11-13 14:52:22,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 122 transitions, 455 flow. Second operand has 22 states, 22 states have (on average 21.545454545454547) internal successors, (474), 22 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:22,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:52:22,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 133 [2024-11-13 14:52:22,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:52:29,138 INFO L124 PetriNetUnfolderBase]: 465/1265 cut-off events. [2024-11-13 14:52:29,138 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-13 14:52:29,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2525 conditions, 1265 events. 465/1265 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7529 event pairs, 422 based on Foata normal form. 6/837 useless extension candidates. Maximal degree in co-relation 2445. Up to 955 conditions per place. [2024-11-13 14:52:29,143 INFO L140 encePairwiseOnDemand]: 123/133 looper letters, 85 selfloop transitions, 28 changer transitions 0/133 dead transitions. [2024-11-13 14:52:29,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 133 transitions, 721 flow [2024-11-13 14:52:29,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:52:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 14:52:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 377 transitions. [2024-11-13 14:52:29,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.20247046186895812 [2024-11-13 14:52:29,147 INFO L175 Difference]: Start difference. First operand has 135 places, 122 transitions, 455 flow. Second operand 14 states and 377 transitions. [2024-11-13 14:52:29,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 133 transitions, 721 flow [2024-11-13 14:52:29,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 133 transitions, 705 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-13 14:52:29,152 INFO L231 Difference]: Finished difference. Result has 150 places, 129 transitions, 537 flow [2024-11-13 14:52:29,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=537, PETRI_PLACES=150, PETRI_TRANSITIONS=129} [2024-11-13 14:52:29,153 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 32 predicate places. [2024-11-13 14:52:29,153 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 129 transitions, 537 flow [2024-11-13 14:52:29,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 21.545454545454547) internal successors, (474), 22 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:29,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:52:29,154 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:52:29,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 14:52:29,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:29,355 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:52:29,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:29,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1368731179, now seen corresponding path program 1 times [2024-11-13 14:52:29,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:52:29,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620850500] [2024-11-13 14:52:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:29,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:29,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:52:29,358 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:52:29,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:52:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:30,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 14:52:30,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:52:30,249 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 25 treesize of output 1 [2024-11-13 14:52:30,366 INFO L349 Elim1Store]: treesize reduction 94, result has 30.4 percent of original size [2024-11-13 14:52:30,366 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 37 treesize of output 54 [2024-11-13 14:52:30,445 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 38 treesize of output 31 [2024-11-13 14:52:30,520 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 38 treesize of output 31 [2024-11-13 14:52:30,547 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 14:52:30,587 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 14:52:30,633 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 14:52:30,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:52:31,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:52:31,051 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 30 treesize of output 31 [2024-11-13 14:52:31,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:52:31,075 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 54 treesize of output 57 [2024-11-13 14:52:31,087 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 21 treesize of output 14 [2024-11-13 14:52:37,109 INFO L349 Elim1Store]: treesize reduction 7, result has 96.7 percent of original size [2024-11-13 14:52:37,109 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 14:52:37,490 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 14:52:37,490 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:52:37,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620850500] [2024-11-13 14:52:37,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620850500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:52:37,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:52:37,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-13 14:52:37,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13372262] [2024-11-13 14:52:37,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:52:37,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:52:37,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:52:37,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:52:37,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=278, Unknown=13, NotChecked=0, Total=342 [2024-11-13 14:52:43,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 14:52:47,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 133 [2024-11-13 14:52:47,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 129 transitions, 537 flow. Second operand has 19 states, 19 states have (on average 31.68421052631579) internal successors, (602), 19 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:47,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:52:47,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 133 [2024-11-13 14:52:47,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:52:49,962 INFO L124 PetriNetUnfolderBase]: 329/1031 cut-off events. [2024-11-13 14:52:49,962 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-11-13 14:52:49,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 1031 events. 329/1031 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6092 event pairs, 292 based on Foata normal form. 6/806 useless extension candidates. Maximal degree in co-relation 1983. Up to 679 conditions per place. [2024-11-13 14:52:49,969 INFO L140 encePairwiseOnDemand]: 125/133 looper letters, 76 selfloop transitions, 26 changer transitions 0/132 dead transitions. [2024-11-13 14:52:49,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 132 transitions, 751 flow [2024-11-13 14:52:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:52:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 14:52:49,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 446 transitions. [2024-11-13 14:52:49,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2794486215538847 [2024-11-13 14:52:49,972 INFO L175 Difference]: Start difference. First operand has 150 places, 129 transitions, 537 flow. Second operand 12 states and 446 transitions. [2024-11-13 14:52:49,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 132 transitions, 751 flow [2024-11-13 14:52:49,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 132 transitions, 714 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-13 14:52:49,977 INFO L231 Difference]: Finished difference. Result has 158 places, 129 transitions, 561 flow [2024-11-13 14:52:49,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=561, PETRI_PLACES=158, PETRI_TRANSITIONS=129} [2024-11-13 14:52:49,978 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 40 predicate places. [2024-11-13 14:52:49,978 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 129 transitions, 561 flow [2024-11-13 14:52:49,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 31.68421052631579) internal successors, (602), 19 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:49,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:52:49,978 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2024-11-13 14:52:50,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 14:52:50,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:50,179 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:52:50,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:50,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1694733943, now seen corresponding path program 2 times [2024-11-13 14:52:50,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:52:50,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022890572] [2024-11-13 14:52:50,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:52:50,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:50,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:52:50,182 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:52:50,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:52:50,815 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:52:50,816 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:52:50,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:52:50,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:52:50,967 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 14:52:50,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:52:51,141 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 14:52:51,141 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:52:51,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022890572] [2024-11-13 14:52:51,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022890572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:52:51,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:52:51,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-13 14:52:51,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623276292] [2024-11-13 14:52:51,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:52:51,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:52:51,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:52:51,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:52:51,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:52:51,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 133 [2024-11-13 14:52:51,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 129 transitions, 561 flow. Second operand has 12 states, 12 states have (on average 79.91666666666667) internal successors, (959), 12 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:51,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:52:51,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 133 [2024-11-13 14:52:51,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:52:52,522 INFO L124 PetriNetUnfolderBase]: 127/699 cut-off events. [2024-11-13 14:52:52,522 INFO L125 PetriNetUnfolderBase]: For 535/536 co-relation queries the response was YES. [2024-11-13 14:52:52,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 699 events. 127/699 cut-off events. For 535/536 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2991 event pairs, 105 based on Foata normal form. 12/609 useless extension candidates. Maximal degree in co-relation 1532. Up to 267 conditions per place. [2024-11-13 14:52:52,527 INFO L140 encePairwiseOnDemand]: 129/133 looper letters, 93 selfloop transitions, 23 changer transitions 0/181 dead transitions. [2024-11-13 14:52:52,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 181 transitions, 1277 flow [2024-11-13 14:52:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:52:52,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 14:52:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1008 transitions. [2024-11-13 14:52:52,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-13 14:52:52,530 INFO L175 Difference]: Start difference. First operand has 158 places, 129 transitions, 561 flow. Second operand 12 states and 1008 transitions. [2024-11-13 14:52:52,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 181 transitions, 1277 flow [2024-11-13 14:52:52,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 181 transitions, 1121 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-13 14:52:52,537 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 762 flow [2024-11-13 14:52:52,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=762, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2024-11-13 14:52:52,538 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 47 predicate places. [2024-11-13 14:52:52,538 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 762 flow [2024-11-13 14:52:52,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 79.91666666666667) internal successors, (959), 12 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:52:52,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:52:52,539 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2024-11-13 14:52:52,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 14:52:52,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:52,739 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-13 14:52:52,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:52,740 INFO L85 PathProgramCache]: Analyzing trace with hash -340309975, now seen corresponding path program 3 times [2024-11-13 14:52:52,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:52:52,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483868450] [2024-11-13 14:52:52,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:52:52,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:52:52,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:52:52,743 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:52:52,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14b3599-3251-4b83-8468-0ed14384b98a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process