./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:31:25,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:31:25,693 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 23:31:25,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:31:25,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:31:25,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:31:25,734 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:31:25,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:31:25,734 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:31:25,735 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:31:25,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:31:25,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:31:25,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:31:25,736 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:31:25,737 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:31:25,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:31:25,737 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:31:25,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:31:25,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:31:25,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:31:25,738 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:31:25,738 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:31:25,738 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:31:25,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:31:25,739 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:31:25,739 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:31:25,739 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:31:25,739 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:31:25,739 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:31:25,739 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:31:25,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:31:25,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:31:25,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:31:25,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:25,740 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:31:25,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:31:25,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:31:25,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:31:25,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:25,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:31:25,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:31:25,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:31:25,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:31:25,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:31:25,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:31:25,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:31:25,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:31:25,741 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_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2024-11-27 23:31:26,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:31:26,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:31:26,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:31:26,044 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:31:26,044 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:31:26,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-11-27 23:31:28,925 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/data/d8d9230d9/b9ecb1cb274c4745b096163b5e82e160/FLAG1401485ed [2024-11-27 23:31:29,310 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:31:29,311 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-11-27 23:31:29,337 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/data/d8d9230d9/b9ecb1cb274c4745b096163b5e82e160/FLAG1401485ed [2024-11-27 23:31:29,361 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/data/d8d9230d9/b9ecb1cb274c4745b096163b5e82e160 [2024-11-27 23:31:29,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:31:29,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:31:29,368 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:31:29,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:31:29,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:31:29,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:31:29" (1/1) ... [2024-11-27 23:31:29,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a2271a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:29, skipping insertion in model container [2024-11-27 23:31:29,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:31:29" (1/1) ... [2024-11-27 23:31:29,426 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:31:29,859 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:29,860 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:29,860 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:29,860 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:29,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:31:29,954 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) [2024-11-27 23:31:29,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@63ea06e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:29, skipping insertion in model container [2024-11-27 23:31:29,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:31:29,955 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-27 23:31:29,957 INFO L158 Benchmark]: Toolchain (without parser) took 591.40ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 73.3MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:31:29,957 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 72.9MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:31:29,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 587.57ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 73.3MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:31:29,961 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 72.9MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 587.57ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 73.3MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:31:32,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:31:32,553 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-27 23:31:32,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:31:32,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:31:32,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:31:32,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:31:32,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:31:32,585 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:31:32,585 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:31:32,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:31:32,586 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:31:32,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:31:32,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:31:32,586 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:31:32,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:31:32,587 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:31:32,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:31:32,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:31:32,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:31:32,587 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:31:32,587 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:31:32,588 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:31:32,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:31:32,588 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:31:32,588 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 23:31:32,588 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 23:31:32,588 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:31:32,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:31:32,588 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:31:32,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:31:32,589 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:31:32,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:31:32,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:31:32,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:31:32,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:32,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:31:32,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:31:32,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:31:32,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:31:32,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:32,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:31:32,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:31:32,590 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 23:31:32,590 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 23:31:32,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:31:32,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:31:32,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:31:32,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:31:32,591 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_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2024-11-27 23:31:32,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:31:32,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:31:32,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:31:32,886 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:31:32,887 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:31:32,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-11-27 23:31:35,860 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/data/afd7eb4be/54149a0e6b894b30a640105d9fa65c19/FLAG5aab8f2b2 [2024-11-27 23:31:36,265 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:31:36,266 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-11-27 23:31:36,281 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/data/afd7eb4be/54149a0e6b894b30a640105d9fa65c19/FLAG5aab8f2b2 [2024-11-27 23:31:36,298 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/data/afd7eb4be/54149a0e6b894b30a640105d9fa65c19 [2024-11-27 23:31:36,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:31:36,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:31:36,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:31:36,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:31:36,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:31:36,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:31:36" (1/1) ... [2024-11-27 23:31:36,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aee3506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:36, skipping insertion in model container [2024-11-27 23:31:36,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:31:36" (1/1) ... [2024-11-27 23:31:36,372 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:31:36,849 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:36,849 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:36,849 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:36,850 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:36,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:31:36,936 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-27 23:31:36,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:31:36,995 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:36,995 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:36,996 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:36,998 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:37,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:31:37,067 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:31:37,156 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:37,156 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:37,156 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:37,158 WARN L1675 CHandler]: Possible shadowing of function new [2024-11-27 23:31:37,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:31:37,282 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:31:37,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37 WrapperNode [2024-11-27 23:31:37,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:31:37,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:31:37,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:31:37,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:31:37,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,380 INFO L138 Inliner]: procedures = 284, calls = 143, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 375 [2024-11-27 23:31:37,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:31:37,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:31:37,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:31:37,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:31:37,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,402 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,442 INFO L175 MemorySlicer]: Split 105 memory accesses to 5 slices as follows [2, 5, 94, 2, 2]. 90 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 70, 0, 0]. The 15 writes are split as follows [0, 0, 13, 1, 1]. [2024-11-27 23:31:37,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,471 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,472 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:31:37,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:31:37,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:31:37,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:31:37,496 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (1/1) ... [2024-11-27 23:31:37,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:31:37,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:37,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:37,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:31:37,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-27 23:31:37,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-27 23:31:37,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-27 23:31:37,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-27 23:31:37,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-11-27 23:31:37,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:31:37,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 23:31:37,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 23:31:37,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 23:31:37,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-27 23:31:37,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-27 23:31:37,595 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-27 23:31:37,596 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-27 23:31:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:31:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-27 23:31:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-27 23:31:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-27 23:31:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-27 23:31:37,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-11-27 23:31:37,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-27 23:31:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2024-11-27 23:31:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 23:31:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-27 23:31:37,601 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-27 23:31:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 23:31:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 23:31:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:31:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 23:31:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 23:31:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 23:31:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-27 23:31:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-27 23:31:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:31:37,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:31:37,603 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:31:37,861 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:31:37,862 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:31:39,112 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:31:39,112 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:31:40,978 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:31:40,979 INFO L312 CfgBuilder]: Removed 20 assume(true) statements. [2024-11-27 23:31:40,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:31:40 BoogieIcfgContainer [2024-11-27 23:31:40,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:31:40,981 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:31:40,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:31:40,986 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:31:40,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:31:36" (1/3) ... [2024-11-27 23:31:40,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588598e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:31:40, skipping insertion in model container [2024-11-27 23:31:40,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:31:37" (2/3) ... [2024-11-27 23:31:40,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588598e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:31:40, skipping insertion in model container [2024-11-27 23:31:40,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:31:40" (3/3) ... [2024-11-27 23:31:40,989 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2024-11-27 23:31:41,007 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:31:41,009 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_90-arrayloop2_racing.i that has 3 procedures, 170 locations, 1 initial locations, 20 loop locations, and 59 error locations. [2024-11-27 23:31:41,009 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:31:41,208 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-27 23:31:41,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 207 transitions, 434 flow [2024-11-27 23:31:41,426 INFO L124 PetriNetUnfolderBase]: 55/343 cut-off events. [2024-11-27 23:31:41,431 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-27 23:31:41,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 343 events. 55/343 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1935 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2024-11-27 23:31:41,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 207 transitions, 434 flow [2024-11-27 23:31:41,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 207 transitions, 434 flow [2024-11-27 23:31:41,466 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:31:41,480 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;@10c1545b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:31:41,481 INFO L334 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2024-11-27 23:31:41,494 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:31:41,495 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-27 23:31:41,495 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:31:41,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:41,496 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 23:31:41,496 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:31:41,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:41,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1044788, now seen corresponding path program 1 times [2024-11-27 23:31:41,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:31:41,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948256315] [2024-11-27 23:31:41,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:41,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:41,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:41,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:41,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:31:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:41,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:31:41,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:42,020 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:42,021 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:31:42,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948256315] [2024-11-27 23:31:42,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948256315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:42,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:42,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:31:42,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010170706] [2024-11-27 23:31:42,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:42,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:31:42,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:31:42,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:42,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:31:42,605 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 207 [2024-11-27 23:31:42,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 207 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:42,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:42,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 207 [2024-11-27 23:31:42,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:31:45,776 INFO L124 PetriNetUnfolderBase]: 7529/16987 cut-off events. [2024-11-27 23:31:45,776 INFO L125 PetriNetUnfolderBase]: For 313/341 co-relation queries the response was YES. [2024-11-27 23:31:45,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28410 conditions, 16987 events. 7529/16987 cut-off events. For 313/341 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 162940 event pairs, 4501 based on Foata normal form. 2879/17311 useless extension candidates. Maximal degree in co-relation 27127. Up to 7851 conditions per place. [2024-11-27 23:31:45,938 INFO L140 encePairwiseOnDemand]: 175/207 looper letters, 119 selfloop transitions, 4 changer transitions 0/225 dead transitions. [2024-11-27 23:31:45,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 225 transitions, 716 flow [2024-11-27 23:31:45,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:31:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:31:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2024-11-27 23:31:45,959 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7041062801932367 [2024-11-27 23:31:45,961 INFO L175 Difference]: Start difference. First operand has 176 places, 207 transitions, 434 flow. Second operand 4 states and 583 transitions. [2024-11-27 23:31:45,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 225 transitions, 716 flow [2024-11-27 23:31:45,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 225 transitions, 716 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:31:45,982 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 394 flow [2024-11-27 23:31:45,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2024-11-27 23:31:45,990 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2024-11-27 23:31:45,990 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 394 flow [2024-11-27 23:31:45,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:45,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:45,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 23:31:46,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:31:46,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:46,192 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:31:46,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:46,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1044789, now seen corresponding path program 1 times [2024-11-27 23:31:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:31:46,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780532865] [2024-11-27 23:31:46,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:46,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:46,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:46,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:46,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:31:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:46,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:31:46,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:46,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:46,653 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:31:46,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780532865] [2024-11-27 23:31:46,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780532865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:46,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:46,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:31:46,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266114422] [2024-11-27 23:31:46,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:46,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:31:46,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:31:46,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:46,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:31:47,114 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2024-11-27 23:31:47,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:47,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:47,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2024-11-27 23:31:47,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:31:49,786 INFO L124 PetriNetUnfolderBase]: 7464/17876 cut-off events. [2024-11-27 23:31:49,787 INFO L125 PetriNetUnfolderBase]: For 777/805 co-relation queries the response was YES. [2024-11-27 23:31:49,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30158 conditions, 17876 events. 7464/17876 cut-off events. For 777/805 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 177402 event pairs, 6385 based on Foata normal form. 3/15196 useless extension candidates. Maximal degree in co-relation 28785. Up to 11048 conditions per place. [2024-11-27 23:31:49,898 INFO L140 encePairwiseOnDemand]: 199/207 looper letters, 76 selfloop transitions, 5 changer transitions 0/183 dead transitions. [2024-11-27 23:31:49,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 183 transitions, 570 flow [2024-11-27 23:31:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:31:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:31:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2024-11-27 23:31:49,901 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6038647342995169 [2024-11-27 23:31:49,901 INFO L175 Difference]: Start difference. First operand has 176 places, 179 transitions, 394 flow. Second operand 4 states and 500 transitions. [2024-11-27 23:31:49,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 183 transitions, 570 flow [2024-11-27 23:31:49,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 183 transitions, 558 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 23:31:49,924 INFO L231 Difference]: Finished difference. Result has 178 places, 183 transitions, 427 flow [2024-11-27 23:31:49,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=178, PETRI_TRANSITIONS=183} [2024-11-27 23:31:49,927 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2024-11-27 23:31:49,927 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 183 transitions, 427 flow [2024-11-27 23:31:49,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:49,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:49,927 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 23:31:49,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:50,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:50,132 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:31:50,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:50,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1061530220, now seen corresponding path program 1 times [2024-11-27 23:31:50,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:31:50,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151879063] [2024-11-27 23:31:50,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:50,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:50,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:50,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:50,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:31:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:50,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:31:50,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:50,487 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 [2024-11-27 23:31:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:50,497 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:50,497 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:31:50,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151879063] [2024-11-27 23:31:50,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151879063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:50,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:50,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:31:50,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867004196] [2024-11-27 23:31:50,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:50,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:31:50,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:31:50,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:31:50,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:31:50,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 207 [2024-11-27 23:31:50,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 183 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:50,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:50,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 207 [2024-11-27 23:31:50,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:31:52,864 INFO L124 PetriNetUnfolderBase]: 7464/17875 cut-off events. [2024-11-27 23:31:52,865 INFO L125 PetriNetUnfolderBase]: For 333/361 co-relation queries the response was YES. [2024-11-27 23:31:52,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29637 conditions, 17875 events. 7464/17875 cut-off events. For 333/361 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 177287 event pairs, 6385 based on Foata normal form. 0/15191 useless extension candidates. Maximal degree in co-relation 29603. Up to 11044 conditions per place. [2024-11-27 23:31:52,990 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 74 selfloop transitions, 3 changer transitions 0/182 dead transitions. [2024-11-27 23:31:52,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 182 transitions, 579 flow [2024-11-27 23:31:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:31:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:31:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2024-11-27 23:31:52,993 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6360708534621579 [2024-11-27 23:31:52,993 INFO L175 Difference]: Start difference. First operand has 178 places, 183 transitions, 427 flow. Second operand 3 states and 395 transitions. [2024-11-27 23:31:52,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 182 transitions, 579 flow [2024-11-27 23:31:52,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 182 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:31:53,002 INFO L231 Difference]: Finished difference. Result has 178 places, 182 transitions, 428 flow [2024-11-27 23:31:53,003 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=178, PETRI_TRANSITIONS=182} [2024-11-27 23:31:53,004 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2024-11-27 23:31:53,004 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 182 transitions, 428 flow [2024-11-27 23:31:53,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:53,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:53,004 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 23:31:53,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:53,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:53,209 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:31:53,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1061530221, now seen corresponding path program 1 times [2024-11-27 23:31:53,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:31:53,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661231248] [2024-11-27 23:31:53,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:53,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:53,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:53,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:53,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:31:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:53,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:31:53,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:53,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:31:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:53,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:53,591 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:31:53,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661231248] [2024-11-27 23:31:53,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661231248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:53,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:53,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:31:53,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372053096] [2024-11-27 23:31:53,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:53,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:31:53,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:31:53,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:31:53,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:31:53,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 207 [2024-11-27 23:31:53,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 182 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:53,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:53,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 207 [2024-11-27 23:31:53,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:31:55,785 INFO L124 PetriNetUnfolderBase]: 7464/17874 cut-off events. [2024-11-27 23:31:55,785 INFO L125 PetriNetUnfolderBase]: For 335/363 co-relation queries the response was YES. [2024-11-27 23:31:55,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29637 conditions, 17874 events. 7464/17874 cut-off events. For 335/363 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 177391 event pairs, 6385 based on Foata normal form. 0/15192 useless extension candidates. Maximal degree in co-relation 29602. Up to 11044 conditions per place. [2024-11-27 23:31:55,873 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 74 selfloop transitions, 3 changer transitions 0/181 dead transitions. [2024-11-27 23:31:55,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 181 transitions, 580 flow [2024-11-27 23:31:55,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:31:55,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:31:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2024-11-27 23:31:55,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6360708534621579 [2024-11-27 23:31:55,875 INFO L175 Difference]: Start difference. First operand has 178 places, 182 transitions, 428 flow. Second operand 3 states and 395 transitions. [2024-11-27 23:31:55,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 181 transitions, 580 flow [2024-11-27 23:31:55,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 181 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:31:55,883 INFO L231 Difference]: Finished difference. Result has 177 places, 181 transitions, 426 flow [2024-11-27 23:31:55,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=177, PETRI_TRANSITIONS=181} [2024-11-27 23:31:55,884 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 1 predicate places. [2024-11-27 23:31:55,884 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 181 transitions, 426 flow [2024-11-27 23:31:55,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:55,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:55,884 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:55,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:56,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:56,089 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:31:56,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:56,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1452300473, now seen corresponding path program 1 times [2024-11-27 23:31:56,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:31:56,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145930349] [2024-11-27 23:31:56,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:56,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:56,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:56,093 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:56,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:31:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:56,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:31:56,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:56,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:31:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:56,513 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:56,514 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:31:56,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145930349] [2024-11-27 23:31:56,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145930349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:56,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:56,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:31:56,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773971237] [2024-11-27 23:31:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:56,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:31:56,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:31:56,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:56,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:31:57,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 207 [2024-11-27 23:31:57,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 181 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:57,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:57,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 207 [2024-11-27 23:31:57,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:31:58,606 INFO L124 PetriNetUnfolderBase]: 7464/17872 cut-off events. [2024-11-27 23:31:58,606 INFO L125 PetriNetUnfolderBase]: For 336/364 co-relation queries the response was YES. [2024-11-27 23:31:58,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29637 conditions, 17872 events. 7464/17872 cut-off events. For 336/364 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 177387 event pairs, 6385 based on Foata normal form. 2/15194 useless extension candidates. Maximal degree in co-relation 29600. Up to 11046 conditions per place. [2024-11-27 23:31:58,678 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 75 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2024-11-27 23:31:58,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 179 transitions, 580 flow [2024-11-27 23:31:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:31:58,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:31:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 489 transitions. [2024-11-27 23:31:58,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5905797101449275 [2024-11-27 23:31:58,681 INFO L175 Difference]: Start difference. First operand has 177 places, 181 transitions, 426 flow. Second operand 4 states and 489 transitions. [2024-11-27 23:31:58,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 179 transitions, 580 flow [2024-11-27 23:31:58,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 179 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:31:58,686 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 424 flow [2024-11-27 23:31:58,687 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=424, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2024-11-27 23:31:58,687 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2024-11-27 23:31:58,687 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 424 flow [2024-11-27 23:31:58,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:58,688 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:31:58,688 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:58,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:31:58,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:58,888 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:31:58,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:58,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1452300474, now seen corresponding path program 1 times [2024-11-27 23:31:58,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:31:58,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115806436] [2024-11-27 23:31:58,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:58,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:58,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:58,891 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:58,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:31:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:59,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:31:59,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:59,215 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 [2024-11-27 23:31:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:59,233 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:59,233 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:31:59,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115806436] [2024-11-27 23:31:59,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115806436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:59,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:59,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:31:59,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092398168] [2024-11-27 23:31:59,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:59,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:31:59,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:31:59,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:59,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:31:59,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 207 [2024-11-27 23:31:59,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 424 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:59,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:31:59,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 207 [2024-11-27 23:31:59,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:01,397 INFO L124 PetriNetUnfolderBase]: 7464/17870 cut-off events. [2024-11-27 23:32:01,398 INFO L125 PetriNetUnfolderBase]: For 329/357 co-relation queries the response was YES. [2024-11-27 23:32:01,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29637 conditions, 17870 events. 7464/17870 cut-off events. For 329/357 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 177317 event pairs, 6385 based on Foata normal form. 1/15192 useless extension candidates. Maximal degree in co-relation 29601. Up to 11044 conditions per place. [2024-11-27 23:32:01,489 INFO L140 encePairwiseOnDemand]: 200/207 looper letters, 72 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2024-11-27 23:32:01,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 177 transitions, 578 flow [2024-11-27 23:32:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:01,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:32:01,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2024-11-27 23:32:01,494 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5623188405797102 [2024-11-27 23:32:01,494 INFO L175 Difference]: Start difference. First operand has 176 places, 179 transitions, 424 flow. Second operand 5 states and 582 transitions. [2024-11-27 23:32:01,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 177 transitions, 578 flow [2024-11-27 23:32:01,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 177 transitions, 570 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 23:32:01,503 INFO L231 Difference]: Finished difference. Result has 175 places, 177 transitions, 426 flow [2024-11-27 23:32:01,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=175, PETRI_TRANSITIONS=177} [2024-11-27 23:32:01,504 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, -1 predicate places. [2024-11-27 23:32:01,504 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 177 transitions, 426 flow [2024-11-27 23:32:01,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:01,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:01,505 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-27 23:32:01,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:01,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:01,709 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:32:01,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:01,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1452293895, now seen corresponding path program 1 times [2024-11-27 23:32:01,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:32:01,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301655249] [2024-11-27 23:32:01,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:01,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:01,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:01,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:01,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:32:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:02,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:32:02,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:02,011 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:02,011 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:32:02,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301655249] [2024-11-27 23:32:02,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301655249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:02,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:02,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:32:02,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768876057] [2024-11-27 23:32:02,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:02,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:32:02,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:32:02,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:32:02,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:32:02,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2024-11-27 23:32:02,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 177 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:02,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:02,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2024-11-27 23:32:02,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:03,792 INFO L124 PetriNetUnfolderBase]: 7463/17888 cut-off events. [2024-11-27 23:32:03,793 INFO L125 PetriNetUnfolderBase]: For 336/364 co-relation queries the response was YES. [2024-11-27 23:32:03,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29663 conditions, 17888 events. 7463/17888 cut-off events. For 336/364 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 177374 event pairs, 6385 based on Foata normal form. 2/15203 useless extension candidates. Maximal degree in co-relation 29628. Up to 11044 conditions per place. [2024-11-27 23:32:03,882 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 78 selfloop transitions, 3 changer transitions 0/181 dead transitions. [2024-11-27 23:32:03,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 181 transitions, 602 flow [2024-11-27 23:32:03,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:32:03,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:32:03,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2024-11-27 23:32:03,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6489533011272142 [2024-11-27 23:32:03,884 INFO L175 Difference]: Start difference. First operand has 175 places, 177 transitions, 426 flow. Second operand 3 states and 403 transitions. [2024-11-27 23:32:03,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 181 transitions, 602 flow [2024-11-27 23:32:03,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 181 transitions, 582 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 23:32:03,888 INFO L231 Difference]: Finished difference. Result has 174 places, 177 transitions, 423 flow [2024-11-27 23:32:03,889 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=423, PETRI_PLACES=174, PETRI_TRANSITIONS=177} [2024-11-27 23:32:03,889 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, -2 predicate places. [2024-11-27 23:32:03,889 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 177 transitions, 423 flow [2024-11-27 23:32:03,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:03,889 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:03,889 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:03,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:04,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:04,090 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:32:04,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash 203651641, now seen corresponding path program 1 times [2024-11-27 23:32:04,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:32:04,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398365199] [2024-11-27 23:32:04,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:04,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:04,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:04,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:04,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:32:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:04,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:32:04,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:04,445 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-27 23:32:04,445 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 [2024-11-27 23:32:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:04,535 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:04,535 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:32:04,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398365199] [2024-11-27 23:32:04,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398365199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:04,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:04,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:32:04,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010889431] [2024-11-27 23:32:04,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:04,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:32:04,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:32:04,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:32:04,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:32:05,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 207 [2024-11-27 23:32:05,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 177 transitions, 423 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:05,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:05,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 207 [2024-11-27 23:32:05,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:06,698 INFO L124 PetriNetUnfolderBase]: 7529/17000 cut-off events. [2024-11-27 23:32:06,698 INFO L125 PetriNetUnfolderBase]: For 389/418 co-relation queries the response was YES. [2024-11-27 23:32:06,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29085 conditions, 17000 events. 7529/17000 cut-off events. For 389/418 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 162844 event pairs, 4501 based on Foata normal form. 3/14545 useless extension candidates. Maximal degree in co-relation 29050. Up to 7858 conditions per place. [2024-11-27 23:32:06,786 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 122 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2024-11-27 23:32:06,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 221 transitions, 765 flow [2024-11-27 23:32:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:32:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:32:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 533 transitions. [2024-11-27 23:32:06,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.643719806763285 [2024-11-27 23:32:06,789 INFO L175 Difference]: Start difference. First operand has 174 places, 177 transitions, 423 flow. Second operand 4 states and 533 transitions. [2024-11-27 23:32:06,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 221 transitions, 765 flow [2024-11-27 23:32:06,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 221 transitions, 762 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:32:06,793 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 426 flow [2024-11-27 23:32:06,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=426, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2024-11-27 23:32:06,794 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, -2 predicate places. [2024-11-27 23:32:06,794 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 426 flow [2024-11-27 23:32:06,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:06,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:06,795 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:06,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:06,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:06,995 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:32:06,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash 203651642, now seen corresponding path program 1 times [2024-11-27 23:32:06,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:32:06,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479364506] [2024-11-27 23:32:06,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:06,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:06,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:06,998 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:06,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:32:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:07,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:32:07,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:07,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:32:07,458 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 [2024-11-27 23:32:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:07,533 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:07,533 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:32:07,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479364506] [2024-11-27 23:32:07,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479364506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:07,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:07,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:32:07,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254818481] [2024-11-27 23:32:07,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:07,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:32:07,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:32:07,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:32:07,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:32:08,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2024-11-27 23:32:08,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 426 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:08,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:08,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2024-11-27 23:32:08,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:09,791 INFO L124 PetriNetUnfolderBase]: 7608/18204 cut-off events. [2024-11-27 23:32:09,791 INFO L125 PetriNetUnfolderBase]: For 877/906 co-relation queries the response was YES. [2024-11-27 23:32:09,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30841 conditions, 18204 events. 7608/18204 cut-off events. For 877/906 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 181174 event pairs, 6517 based on Foata normal form. 2/15491 useless extension candidates. Maximal degree in co-relation 30749. Up to 11287 conditions per place. [2024-11-27 23:32:09,880 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 83 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2024-11-27 23:32:09,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 182 transitions, 632 flow [2024-11-27 23:32:09,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:32:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:32:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2024-11-27 23:32:09,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.607487922705314 [2024-11-27 23:32:09,882 INFO L175 Difference]: Start difference. First operand has 174 places, 175 transitions, 426 flow. Second operand 4 states and 503 transitions. [2024-11-27 23:32:09,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 182 transitions, 632 flow [2024-11-27 23:32:09,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 182 transitions, 616 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 23:32:09,901 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 462 flow [2024-11-27 23:32:09,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=462, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2024-11-27 23:32:09,903 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2024-11-27 23:32:09,904 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 462 flow [2024-11-27 23:32:09,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:09,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:09,904 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:09,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:10,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:10,105 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:32:10,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:10,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2018234752, now seen corresponding path program 1 times [2024-11-27 23:32:10,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:32:10,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581983435] [2024-11-27 23:32:10,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:10,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:10,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:10,107 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:10,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:32:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:10,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 23:32:10,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:10,521 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 [2024-11-27 23:32:10,587 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 [2024-11-27 23:32:10,645 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:32:10,646 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 [2024-11-27 23:32:10,705 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 [2024-11-27 23:32:10,753 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 [2024-11-27 23:32:10,795 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 [2024-11-27 23:32:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:10,853 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:10,853 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:32:10,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581983435] [2024-11-27 23:32:10,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581983435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:10,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:10,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:32:10,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399772914] [2024-11-27 23:32:10,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:10,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:32:10,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:32:10,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:32:10,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:32:13,269 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 207 [2024-11-27 23:32:13,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 462 flow. Second operand has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:13,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:13,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 207 [2024-11-27 23:32:13,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:15,690 INFO L124 PetriNetUnfolderBase]: 7608/18203 cut-off events. [2024-11-27 23:32:15,691 INFO L125 PetriNetUnfolderBase]: For 418/447 co-relation queries the response was YES. [2024-11-27 23:32:15,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30343 conditions, 18203 events. 7608/18203 cut-off events. For 418/447 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 181022 event pairs, 6517 based on Foata normal form. 0/15503 useless extension candidates. Maximal degree in co-relation 30250. Up to 11296 conditions per place. [2024-11-27 23:32:15,780 INFO L140 encePairwiseOnDemand]: 195/207 looper letters, 96 selfloop transitions, 11 changer transitions 0/195 dead transitions. [2024-11-27 23:32:15,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 195 transitions, 714 flow [2024-11-27 23:32:15,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:32:15,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 23:32:15,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1108 transitions. [2024-11-27 23:32:15,785 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48660518225735616 [2024-11-27 23:32:15,785 INFO L175 Difference]: Start difference. First operand has 176 places, 179 transitions, 462 flow. Second operand 11 states and 1108 transitions. [2024-11-27 23:32:15,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 195 transitions, 714 flow [2024-11-27 23:32:15,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 195 transitions, 712 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:32:15,792 INFO L231 Difference]: Finished difference. Result has 190 places, 184 transitions, 518 flow [2024-11-27 23:32:15,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=518, PETRI_PLACES=190, PETRI_TRANSITIONS=184} [2024-11-27 23:32:15,793 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 14 predicate places. [2024-11-27 23:32:15,793 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 184 transitions, 518 flow [2024-11-27 23:32:15,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:15,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:15,794 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:15,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 23:32:15,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:15,994 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:32:15,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2018234753, now seen corresponding path program 1 times [2024-11-27 23:32:15,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:32:15,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904747638] [2024-11-27 23:32:15,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:15,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:15,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:15,997 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:15,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:32:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:16,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-27 23:32:16,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:16,402 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 [2024-11-27 23:32:16,415 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 [2024-11-27 23:32:16,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-27 23:32:16,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-27 23:32:16,592 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:32:16,592 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 [2024-11-27 23:32:16,613 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 [2024-11-27 23:32:16,670 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 [2024-11-27 23:32:16,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-27 23:32:16,749 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 [2024-11-27 23:32:16,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-27 23:32:16,814 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 [2024-11-27 23:32:16,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-27 23:32:16,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:16,924 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:16,924 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:32:16,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904747638] [2024-11-27 23:32:16,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904747638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:16,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:16,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:32:16,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307666107] [2024-11-27 23:32:16,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:16,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:32:16,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:32:16,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:32:16,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:32:19,501 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 207 [2024-11-27 23:32:19,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 184 transitions, 518 flow. Second operand has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:19,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:19,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 207 [2024-11-27 23:32:19,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:22,058 INFO L124 PetriNetUnfolderBase]: 7608/18202 cut-off events. [2024-11-27 23:32:22,059 INFO L125 PetriNetUnfolderBase]: For 429/458 co-relation queries the response was YES. [2024-11-27 23:32:22,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30380 conditions, 18202 events. 7608/18202 cut-off events. For 429/458 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 180977 event pairs, 6517 based on Foata normal form. 1/15506 useless extension candidates. Maximal degree in co-relation 30299. Up to 11300 conditions per place. [2024-11-27 23:32:22,155 INFO L140 encePairwiseOnDemand]: 195/207 looper letters, 98 selfloop transitions, 11 changer transitions 0/195 dead transitions. [2024-11-27 23:32:22,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 195 transitions, 766 flow [2024-11-27 23:32:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:32:22,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 23:32:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1088 transitions. [2024-11-27 23:32:22,158 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47782169521299955 [2024-11-27 23:32:22,158 INFO L175 Difference]: Start difference. First operand has 190 places, 184 transitions, 518 flow. Second operand 11 states and 1088 transitions. [2024-11-27 23:32:22,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 195 transitions, 766 flow [2024-11-27 23:32:22,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 195 transitions, 762 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:32:22,165 INFO L231 Difference]: Finished difference. Result has 199 places, 184 transitions, 540 flow [2024-11-27 23:32:22,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=540, PETRI_PLACES=199, PETRI_TRANSITIONS=184} [2024-11-27 23:32:22,166 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 23 predicate places. [2024-11-27 23:32:22,166 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 184 transitions, 540 flow [2024-11-27 23:32:22,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:22,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:22,167 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:22,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 23:32:22,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:22,367 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:32:22,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:22,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1859231072, now seen corresponding path program 1 times [2024-11-27 23:32:22,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:32:22,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925503813] [2024-11-27 23:32:22,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:22,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:22,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:22,371 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:22,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:32:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:22,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:32:22,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:22,678 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:22,678 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:32:22,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925503813] [2024-11-27 23:32:22,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925503813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:22,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:22,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:32:22,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260697324] [2024-11-27 23:32:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:22,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:32:22,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:32:22,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:32:22,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:32:23,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 207 [2024-11-27 23:32:23,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 184 transitions, 540 flow. Second operand has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:23,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:23,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 207 [2024-11-27 23:32:23,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:24,642 INFO L124 PetriNetUnfolderBase]: 7464/17904 cut-off events. [2024-11-27 23:32:24,642 INFO L125 PetriNetUnfolderBase]: For 361/389 co-relation queries the response was YES. [2024-11-27 23:32:24,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29773 conditions, 17904 events. 7464/17904 cut-off events. For 361/389 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 177609 event pairs, 6385 based on Foata normal form. 0/15230 useless extension candidates. Maximal degree in co-relation 29697. Up to 11047 conditions per place. [2024-11-27 23:32:24,755 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 78 selfloop transitions, 11 changer transitions 0/182 dead transitions. [2024-11-27 23:32:24,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 182 transitions, 714 flow [2024-11-27 23:32:24,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:32:24,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:32:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 584 transitions. [2024-11-27 23:32:24,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5642512077294686 [2024-11-27 23:32:24,757 INFO L175 Difference]: Start difference. First operand has 199 places, 184 transitions, 540 flow. Second operand 5 states and 584 transitions. [2024-11-27 23:32:24,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 182 transitions, 714 flow [2024-11-27 23:32:24,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 182 transitions, 692 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-27 23:32:24,766 INFO L231 Difference]: Finished difference. Result has 191 places, 182 transitions, 536 flow [2024-11-27 23:32:24,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=536, PETRI_PLACES=191, PETRI_TRANSITIONS=182} [2024-11-27 23:32:24,767 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 15 predicate places. [2024-11-27 23:32:24,768 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 182 transitions, 536 flow [2024-11-27 23:32:24,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:24,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:24,769 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:24,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:32:24,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:24,970 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:32:24,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:24,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1859231071, now seen corresponding path program 1 times [2024-11-27 23:32:24,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:32:24,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689703650] [2024-11-27 23:32:24,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:24,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:24,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:24,972 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:24,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:32:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:25,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 23:32:25,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:25,315 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 [2024-11-27 23:32:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:25,361 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:25,362 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:32:25,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689703650] [2024-11-27 23:32:25,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689703650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:25,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:32:25,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:32:25,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025811577] [2024-11-27 23:32:25,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:25,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:32:25,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:32:25,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:32:25,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:32:25,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 207 [2024-11-27 23:32:25,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 182 transitions, 536 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:25,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:25,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 207 [2024-11-27 23:32:25,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:27,252 INFO L124 PetriNetUnfolderBase]: 7464/17896 cut-off events. [2024-11-27 23:32:27,252 INFO L125 PetriNetUnfolderBase]: For 409/437 co-relation queries the response was YES. [2024-11-27 23:32:27,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29756 conditions, 17896 events. 7464/17896 cut-off events. For 409/437 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 177569 event pairs, 6385 based on Foata normal form. 8/15230 useless extension candidates. Maximal degree in co-relation 29688. Up to 11045 conditions per place. [2024-11-27 23:32:27,352 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 75 selfloop transitions, 9 changer transitions 0/180 dead transitions. [2024-11-27 23:32:27,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 180 transitions, 700 flow [2024-11-27 23:32:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:32:27,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:32:27,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2024-11-27 23:32:27,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2024-11-27 23:32:27,354 INFO L175 Difference]: Start difference. First operand has 191 places, 182 transitions, 536 flow. Second operand 4 states and 495 transitions. [2024-11-27 23:32:27,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 180 transitions, 700 flow [2024-11-27 23:32:27,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 180 transitions, 678 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 23:32:27,360 INFO L231 Difference]: Finished difference. Result has 188 places, 180 transitions, 528 flow [2024-11-27 23:32:27,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=528, PETRI_PLACES=188, PETRI_TRANSITIONS=180} [2024-11-27 23:32:27,361 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 12 predicate places. [2024-11-27 23:32:27,361 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 180 transitions, 528 flow [2024-11-27 23:32:27,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:27,361 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:27,362 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:27,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 23:32:27,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:27,562 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:32:27,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:27,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2046530413, now seen corresponding path program 1 times [2024-11-27 23:32:27,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:32:27,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949027598] [2024-11-27 23:32:27,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:27,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:27,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:27,566 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:27,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:32:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:27,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:32:27,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:27,901 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:27,942 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:32:27,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949027598] [2024-11-27 23:32:27,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949027598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:27,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:32:27,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-27 23:32:27,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734348431] [2024-11-27 23:32:27,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:27,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:32:27,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:32:27,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:32:27,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:32:27,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2024-11-27 23:32:27,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 180 transitions, 528 flow. Second operand has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:27,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:27,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2024-11-27 23:32:27,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:29,846 INFO L124 PetriNetUnfolderBase]: 7464/17946 cut-off events. [2024-11-27 23:32:29,846 INFO L125 PetriNetUnfolderBase]: For 473/501 co-relation queries the response was YES. [2024-11-27 23:32:29,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29886 conditions, 17946 events. 7464/17946 cut-off events. For 473/501 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 178069 event pairs, 6385 based on Foata normal form. 6/15274 useless extension candidates. Maximal degree in co-relation 29811. Up to 11041 conditions per place. [2024-11-27 23:32:29,952 INFO L140 encePairwiseOnDemand]: 203/207 looper letters, 92 selfloop transitions, 11 changer transitions 0/199 dead transitions. [2024-11-27 23:32:29,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 199 transitions, 856 flow [2024-11-27 23:32:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:32:29,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:32:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2024-11-27 23:32:29,954 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5958132045088567 [2024-11-27 23:32:29,954 INFO L175 Difference]: Start difference. First operand has 188 places, 180 transitions, 528 flow. Second operand 6 states and 740 transitions. [2024-11-27 23:32:29,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 199 transitions, 856 flow [2024-11-27 23:32:29,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 199 transitions, 812 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 23:32:29,963 INFO L231 Difference]: Finished difference. Result has 194 places, 185 transitions, 596 flow [2024-11-27 23:32:29,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=596, PETRI_PLACES=194, PETRI_TRANSITIONS=185} [2024-11-27 23:32:29,964 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 18 predicate places. [2024-11-27 23:32:29,964 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 185 transitions, 596 flow [2024-11-27 23:32:29,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:29,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:32:29,964 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:29,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 23:32:30,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:30,165 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:32:30,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:30,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1321646169, now seen corresponding path program 1 times [2024-11-27 23:32:30,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:32:30,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708230112] [2024-11-27 23:32:30,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:30,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:30,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:30,167 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:30,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:32:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:30,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-27 23:32:30,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:30,558 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 [2024-11-27 23:32:30,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 23:32:30,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-27 23:32:30,930 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2024-11-27 23:32:30,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 29 [2024-11-27 23:32:30,978 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2024-11-27 23:32:30,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-27 23:32:31,049 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 20 treesize of output 15 [2024-11-27 23:32:31,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2024-11-27 23:32:31,133 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 20 treesize of output 15 [2024-11-27 23:32:31,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2024-11-27 23:32:31,180 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 [2024-11-27 23:32:31,188 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 [2024-11-27 23:32:31,245 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 [2024-11-27 23:32:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:31,291 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:31,452 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_578 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_578) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_578 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_578) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_579) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-27 23:32:31,517 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_578 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_578) |c_~#c~0.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_579) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_578 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_578) |c_~#c~0.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32))))))) is different from false [2024-11-27 23:32:31,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:32:31,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2024-11-27 23:32:31,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:32:31,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-27 23:32:31,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:32:31,968 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 74 treesize of output 77 [2024-11-27 23:32:32,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:32:32,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 113 [2024-11-27 23:32:32,025 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 26 treesize of output 20 [2024-11-27 23:32:32,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2024-11-27 23:32:32,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:32:32,785 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2024-11-27 23:32:32,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:32:32,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 55 [2024-11-27 23:32:32,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-27 23:32:37,153 INFO L349 Elim1Store]: treesize reduction 10, result has 90.1 percent of original size [2024-11-27 23:32:37,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 156 [2024-11-27 23:32:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-27 23:32:40,432 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:32:40,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708230112] [2024-11-27 23:32:40,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708230112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:40,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:32:40,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2024-11-27 23:32:40,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162264238] [2024-11-27 23:32:40,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:40,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-27 23:32:40,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:32:40,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-27 23:32:40,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=327, Unknown=4, NotChecked=74, Total=462 [2024-11-27 23:32:41,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 207 [2024-11-27 23:32:41,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 185 transitions, 596 flow. Second operand has 22 states, 22 states have (on average 41.54545454545455) internal successors, (914), 22 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:32:41,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:32:41,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 207 [2024-11-27 23:32:41,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:32:59,597 INFO L124 PetriNetUnfolderBase]: 47994/84764 cut-off events. [2024-11-27 23:32:59,597 INFO L125 PetriNetUnfolderBase]: For 753/754 co-relation queries the response was YES. [2024-11-27 23:32:59,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157729 conditions, 84764 events. 47994/84764 cut-off events. For 753/754 co-relation queries the response was YES. Maximal size of possible extension queue 2616. Compared 826477 event pairs, 43378 based on Foata normal form. 6/53242 useless extension candidates. Maximal degree in co-relation 157659. Up to 70881 conditions per place. [2024-11-27 23:33:00,017 INFO L140 encePairwiseOnDemand]: 197/207 looper letters, 128 selfloop transitions, 28 changer transitions 0/196 dead transitions. [2024-11-27 23:33:00,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 196 transitions, 948 flow [2024-11-27 23:33:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:33:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-27 23:33:00,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 700 transitions. [2024-11-27 23:33:00,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.24154589371980675 [2024-11-27 23:33:00,020 INFO L175 Difference]: Start difference. First operand has 194 places, 185 transitions, 596 flow. Second operand 14 states and 700 transitions. [2024-11-27 23:33:00,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 196 transitions, 948 flow [2024-11-27 23:33:00,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 196 transitions, 932 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-27 23:33:00,027 INFO L231 Difference]: Finished difference. Result has 209 places, 192 transitions, 678 flow [2024-11-27 23:33:00,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=678, PETRI_PLACES=209, PETRI_TRANSITIONS=192} [2024-11-27 23:33:00,028 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 33 predicate places. [2024-11-27 23:33:00,028 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 192 transitions, 678 flow [2024-11-27 23:33:00,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 41.54545454545455) internal successors, (914), 22 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:33:00,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:33:00,029 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:00,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 23:33:00,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:00,229 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:33:00,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:00,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1321646170, now seen corresponding path program 1 times [2024-11-27 23:33:00,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:33:00,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006045560] [2024-11-27 23:33:00,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:00,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:00,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:33:00,232 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:33:00,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 23:33:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:00,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 23:33:00,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:33:00,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-27 23:33:00,947 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-11-27 23:33:00,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 52 [2024-11-27 23:33:01,038 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 [2024-11-27 23:33:01,137 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 [2024-11-27 23:33:01,172 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 [2024-11-27 23:33:01,244 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 [2024-11-27 23:33:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:33:01,327 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:33:01,455 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_681) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-27 23:33:01,481 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_681) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-27 23:33:01,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:33:01,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-27 23:33:01,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:33:01,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2024-11-27 23:33:01,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2024-11-27 23:33:12,617 INFO L349 Elim1Store]: treesize reduction 7, result has 96.7 percent of original size [2024-11-27 23:33:12,618 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 [2024-11-27 23:33:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-27 23:33:13,241 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:33:13,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006045560] [2024-11-27 23:33:13,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006045560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:33:13,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:33:13,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-27 23:33:13,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610914706] [2024-11-27 23:33:13,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:33:13,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:33:13,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:33:13,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:33:13,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=8, NotChecked=62, Total=342 [2024-11-27 23:33:13,244 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 207 [2024-11-27 23:33:13,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 192 transitions, 678 flow. Second operand has 19 states, 19 states have (on average 57.68421052631579) internal successors, (1096), 19 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:33:13,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:33:13,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 207 [2024-11-27 23:33:13,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:33:24,235 INFO L124 PetriNetUnfolderBase]: 27748/54505 cut-off events. [2024-11-27 23:33:24,235 INFO L125 PetriNetUnfolderBase]: For 667/668 co-relation queries the response was YES. [2024-11-27 23:33:24,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97135 conditions, 54505 events. 27748/54505 cut-off events. For 667/668 co-relation queries the response was YES. Maximal size of possible extension queue 1628. Compared 553919 event pairs, 24779 based on Foata normal form. 6/41011 useless extension candidates. Maximal degree in co-relation 97055. Up to 40959 conditions per place. [2024-11-27 23:33:24,821 INFO L140 encePairwiseOnDemand]: 199/207 looper letters, 113 selfloop transitions, 26 changer transitions 0/195 dead transitions. [2024-11-27 23:33:24,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 195 transitions, 966 flow [2024-11-27 23:33:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:33:24,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 23:33:24,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 795 transitions. [2024-11-27 23:33:24,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32004830917874394 [2024-11-27 23:33:24,825 INFO L175 Difference]: Start difference. First operand has 209 places, 192 transitions, 678 flow. Second operand 12 states and 795 transitions. [2024-11-27 23:33:24,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 195 transitions, 966 flow [2024-11-27 23:33:24,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 195 transitions, 929 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-27 23:33:24,829 INFO L231 Difference]: Finished difference. Result has 217 places, 192 transitions, 702 flow [2024-11-27 23:33:24,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=702, PETRI_PLACES=217, PETRI_TRANSITIONS=192} [2024-11-27 23:33:24,830 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 41 predicate places. [2024-11-27 23:33:24,830 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 192 transitions, 702 flow [2024-11-27 23:33:24,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 57.68421052631579) internal successors, (1096), 19 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:33:24,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:33:24,830 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2024-11-27 23:33:24,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 23:33:25,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:25,031 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:33:25,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:25,031 INFO L85 PathProgramCache]: Analyzing trace with hash -559690887, now seen corresponding path program 2 times [2024-11-27 23:33:25,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:33:25,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920391096] [2024-11-27 23:33:25,032 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:33:25,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:25,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:33:25,034 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:33:25,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:33:25,532 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:33:25,532 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:33:25,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:33:25,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:33:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:33:25,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:33:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:33:26,003 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:33:26,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920391096] [2024-11-27 23:33:26,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920391096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:33:26,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:33:26,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-27 23:33:26,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286111850] [2024-11-27 23:33:26,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:33:26,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:33:26,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:33:26,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:33:26,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:33:26,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2024-11-27 23:33:26,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 192 transitions, 702 flow. Second operand has 12 states, 12 states have (on average 111.91666666666667) internal successors, (1343), 12 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:33:26,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:33:26,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2024-11-27 23:33:26,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:33:30,072 INFO L124 PetriNetUnfolderBase]: 7464/18054 cut-off events. [2024-11-27 23:33:30,072 INFO L125 PetriNetUnfolderBase]: For 854/882 co-relation queries the response was YES. [2024-11-27 23:33:30,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30414 conditions, 18054 events. 7464/18054 cut-off events. For 854/882 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 178320 event pairs, 6385 based on Foata normal form. 12/15395 useless extension candidates. Maximal degree in co-relation 30336. Up to 11041 conditions per place. [2024-11-27 23:33:30,181 INFO L140 encePairwiseOnDemand]: 203/207 looper letters, 122 selfloop transitions, 23 changer transitions 0/244 dead transitions. [2024-11-27 23:33:30,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 244 transitions, 1476 flow [2024-11-27 23:33:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:33:30,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 23:33:30,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1421 transitions. [2024-11-27 23:33:30,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.572061191626409 [2024-11-27 23:33:30,185 INFO L175 Difference]: Start difference. First operand has 217 places, 192 transitions, 702 flow. Second operand 12 states and 1421 transitions. [2024-11-27 23:33:30,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 244 transitions, 1476 flow [2024-11-27 23:33:30,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 244 transitions, 1320 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-27 23:33:30,193 INFO L231 Difference]: Finished difference. Result has 224 places, 205 transitions, 903 flow [2024-11-27 23:33:30,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=903, PETRI_PLACES=224, PETRI_TRANSITIONS=205} [2024-11-27 23:33:30,193 INFO L279 CegarLoopForPetriNet]: 176 programPoint places, 48 predicate places. [2024-11-27 23:33:30,193 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 205 transitions, 903 flow [2024-11-27 23:33:30,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 111.91666666666667) internal successors, (1343), 12 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:33:30,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:33:30,194 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2024-11-27 23:33:30,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 23:33:30,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:30,395 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2024-11-27 23:33:30,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:30,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1684552903, now seen corresponding path program 3 times [2024-11-27 23:33:30,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:33:30,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198179902] [2024-11-27 23:33:30,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:33:30,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:30,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:33:30,399 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:33:30,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba83049d-f50b-4827-9780-f8869ec6cf15/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process