./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI --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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:47:56,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:47:56,509 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:47:56,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:47:56,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:47:56,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:47:56,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:47:56,560 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:47:56,561 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:47:56,566 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:47:56,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:47:56,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:47:56,568 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:47:56,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:47:56,570 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:47:56,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:47:56,571 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:47:56,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:47:56,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:47:56,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:47:56,573 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:47:56,574 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:47:56,576 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:47:56,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:47:56,576 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:47:56,577 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:47:56,577 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:47:56,578 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:47:56,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:47:56,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:47:56,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:47:56,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:47:56,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:47:56,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:47:56,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:47:56,582 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:47:56,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:47:56,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:47:56,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:47:56,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:47:56,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:47:56,583 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2023-11-24 21:47:56,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:47:56,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:47:56,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:47:56,955 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:47:56,955 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:47:56,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-11-24 21:48:00,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:48:00,284 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:48:00,285 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-11-24 21:48:00,295 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/data/27a0e88f4/41018b6142da4138914c1533611c4459/FLAG3a1cc75ad [2023-11-24 21:48:00,309 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/data/27a0e88f4/41018b6142da4138914c1533611c4459 [2023-11-24 21:48:00,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:48:00,314 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:48:00,315 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:48:00,316 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:48:00,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:48:00,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:48:00" (1/1) ... [2023-11-24 21:48:00,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e49217c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:00, skipping insertion in model container [2023-11-24 21:48:00,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:48:00" (1/1) ... [2023-11-24 21:48:00,353 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:48:00,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:48:00,585 ERROR L324 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) [2023-11-24 21:48:00,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e33ee49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:00, skipping insertion in model container [2023-11-24 21:48:00,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:48:00,587 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:48:00,589 INFO L158 Benchmark]: Toolchain (without parser) took 274.10ms. Allocated memory is still 153.1MB. Free memory was 110.5MB in the beginning and 99.6MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 21:48:00,589 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 115.3MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:48:00,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.36ms. Allocated memory is still 153.1MB. Free memory was 110.1MB in the beginning and 100.0MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-24 21:48:00,592 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 115.3MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.36ms. Allocated memory is still 153.1MB. Free memory was 110.1MB in the beginning and 100.0MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 165]: 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI --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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:48:03,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:48:03,399 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:48:03,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:48:03,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:48:03,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:48:03,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:48:03,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:48:03,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:48:03,468 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:48:03,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:48:03,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:48:03,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:48:03,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:48:03,472 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:48:03,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:48:03,473 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:48:03,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:48:03,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:48:03,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:48:03,476 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:48:03,476 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:48:03,477 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:48:03,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:48:03,477 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:48:03,478 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:48:03,478 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:48:03,479 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:48:03,479 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:48:03,480 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:48:03,481 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:48:03,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:48:03,482 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:48:03,482 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:48:03,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:48:03,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:48:03,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:48:03,484 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:48:03,484 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:48:03,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:48:03,485 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:48:03,485 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:48:03,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:48:03,485 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:48:03,486 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2023-11-24 21:48:03,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:48:03,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:48:03,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:48:03,931 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:48:03,932 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:48:03,933 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-11-24 21:48:07,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:48:07,328 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:48:07,329 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-11-24 21:48:07,340 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/data/ddd1ce64d/6914d6f70d4f43f29daa22d496e16261/FLAG809407c7c [2023-11-24 21:48:07,357 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/data/ddd1ce64d/6914d6f70d4f43f29daa22d496e16261 [2023-11-24 21:48:07,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:48:07,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:48:07,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:48:07,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:48:07,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:48:07,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:07,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c340a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07, skipping insertion in model container [2023-11-24 21:48:07,375 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:07,427 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:48:07,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:48:07,696 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:48:07,701 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:48:07,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:48:07,750 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:48:07,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:48:07,813 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:48:07,814 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:48:07,822 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:48:07,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07 WrapperNode [2023-11-24 21:48:07,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:48:07,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:48:07,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:48:07,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:48:07,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:07,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:07,896 INFO L138 Inliner]: procedures = 27, calls = 64, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 325 [2023-11-24 21:48:07,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:48:07,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:48:07,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:48:07,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:48:07,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:07,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:07,916 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:07,948 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 2, 10, 2, 2]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 3, 1, 1]. [2023-11-24 21:48:07,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:07,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:07,981 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:07,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:07,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:08,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:08,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:48:08,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:48:08,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:48:08,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:48:08,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (1/1) ... [2023-11-24 21:48:08,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:48:08,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:48:08,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:48:08,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:48:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:48:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:48:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:48:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:48:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:48:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 21:48:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:48:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:48:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:48:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:48:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:48:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 21:48:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:48:08,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:48:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:48:08,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:48:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 21:48:08,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 21:48:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:48:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:48:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:48:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:48:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:48:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:48:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:48:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:48:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:48:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:48:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 21:48:08,125 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:48:08,322 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:48:08,325 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:48:09,319 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:48:09,908 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:48:09,909 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-24 21:48:09,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:48:09 BoogieIcfgContainer [2023-11-24 21:48:09,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:48:09,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:48:09,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:48:09,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:48:09,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:48:07" (1/3) ... [2023-11-24 21:48:09,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0081ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:48:09, skipping insertion in model container [2023-11-24 21:48:09,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:07" (2/3) ... [2023-11-24 21:48:09,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0081ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:48:09, skipping insertion in model container [2023-11-24 21:48:09,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:48:09" (3/3) ... [2023-11-24 21:48:09,920 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2023-11-24 21:48:09,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:48:09,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-11-24 21:48:09,940 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:48:10,048 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 21:48:10,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 219 flow [2023-11-24 21:48:10,187 INFO L124 PetriNetUnfolderBase]: 10/96 cut-off events. [2023-11-24 21:48:10,187 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:48:10,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 10/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 265 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2023-11-24 21:48:10,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 99 transitions, 219 flow [2023-11-24 21:48:10,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 95 transitions, 208 flow [2023-11-24 21:48:10,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:48:10,226 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@d83f574, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:48:10,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-11-24 21:48:10,231 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:48:10,231 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-24 21:48:10,231 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:48:10,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:10,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:48:10,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:48:10,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:10,241 INFO L85 PathProgramCache]: Analyzing trace with hash 965995, now seen corresponding path program 1 times [2023-11-24 21:48:10,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:10,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086748396] [2023-11-24 21:48:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:10,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:10,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:10,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:10,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 21:48:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:10,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:48:10,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:10,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-11-24 21:48:10,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:48:10,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:48:10,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:10,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:10,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:10,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:10,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:48:10,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:48:10,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:10,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:10,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:10,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:48:10,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:10,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:48:10,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:10,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:10,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:10,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:10,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:10,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:10,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:10,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 21:48:10,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:10,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:10,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:48:10,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:48:10,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086748396] [2023-11-24 21:48:10,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086748396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:10,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:10,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:48:10,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110332396] [2023-11-24 21:48:10,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:10,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:48:10,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:48:10,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:48:10,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:10,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 99 [2023-11-24 21:48:10,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:10,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:48:10,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 99 [2023-11-24 21:48:10,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:48:13,081 INFO L124 PetriNetUnfolderBase]: 5724/9591 cut-off events. [2023-11-24 21:48:13,081 INFO L125 PetriNetUnfolderBase]: For 402/402 co-relation queries the response was YES. [2023-11-24 21:48:13,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17835 conditions, 9591 events. 5724/9591 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 71716 event pairs, 5236 based on Foata normal form. 514/6227 useless extension candidates. Maximal degree in co-relation 17596. Up to 7878 conditions per place. [2023-11-24 21:48:13,264 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 47 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-11-24 21:48:13,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 88 transitions, 292 flow [2023-11-24 21:48:13,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:13,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:48:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-24 21:48:13,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195286195286195 [2023-11-24 21:48:13,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-24 21:48:13,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-24 21:48:13,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:48:13,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-24 21:48:13,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:13,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:13,295 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:13,297 INFO L175 Difference]: Start difference. First operand has 95 places, 95 transitions, 208 flow. Second operand 3 states and 184 transitions. [2023-11-24 21:48:13,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 88 transitions, 292 flow [2023-11-24 21:48:13,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 280 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-24 21:48:13,319 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 186 flow [2023-11-24 21:48:13,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2023-11-24 21:48:13,326 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -9 predicate places. [2023-11-24 21:48:13,326 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 186 flow [2023-11-24 21:48:13,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:13,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:13,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:48:13,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:48:13,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:13,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:48:13,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:13,530 INFO L85 PathProgramCache]: Analyzing trace with hash 965996, now seen corresponding path program 1 times [2023-11-24 21:48:13,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:13,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121380654] [2023-11-24 21:48:13,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:13,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:13,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:13,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:13,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 21:48:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:13,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:48:13,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:13,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-24 21:48:13,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:13,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:13,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:13,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:13,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:13,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:13,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:13,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:13,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:13,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 21:48:13,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:13,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:13,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:13,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:13,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:13,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:13,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:13,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:13,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:13,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:14,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:14,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:14,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:14,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:14,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:14,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:14,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:14,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:14,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:14,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:14,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:14,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:14,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:14,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:14,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:48:14,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:48:14,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121380654] [2023-11-24 21:48:14,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121380654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:14,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:14,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:48:14,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311428568] [2023-11-24 21:48:14,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:14,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:48:14,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:48:14,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:48:14,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:48:14,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 99 [2023-11-24 21:48:14,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:14,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:48:14,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 99 [2023-11-24 21:48:14,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:48:16,900 INFO L124 PetriNetUnfolderBase]: 5727/9600 cut-off events. [2023-11-24 21:48:16,901 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-24 21:48:16,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17635 conditions, 9600 events. 5727/9600 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 71755 event pairs, 5236 based on Foata normal form. 0/5718 useless extension candidates. Maximal degree in co-relation 17585. Up to 7891 conditions per place. [2023-11-24 21:48:17,011 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 51 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2023-11-24 21:48:17,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 97 transitions, 328 flow [2023-11-24 21:48:17,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:48:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:48:17,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2023-11-24 21:48:17,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5959595959595959 [2023-11-24 21:48:17,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 236 transitions. [2023-11-24 21:48:17,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 236 transitions. [2023-11-24 21:48:17,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:48:17,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 236 transitions. [2023-11-24 21:48:17,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:17,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:17,031 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:17,031 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 186 flow. Second operand 4 states and 236 transitions. [2023-11-24 21:48:17,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 97 transitions, 328 flow [2023-11-24 21:48:17,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 97 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:48:17,037 INFO L231 Difference]: Finished difference. Result has 90 places, 97 transitions, 264 flow [2023-11-24 21:48:17,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=90, PETRI_TRANSITIONS=97} [2023-11-24 21:48:17,039 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -5 predicate places. [2023-11-24 21:48:17,039 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 97 transitions, 264 flow [2023-11-24 21:48:17,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:17,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:17,043 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-24 21:48:17,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:48:17,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:17,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:48:17,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:17,246 INFO L85 PathProgramCache]: Analyzing trace with hash 928352138, now seen corresponding path program 1 times [2023-11-24 21:48:17,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:17,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348276576] [2023-11-24 21:48:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:17,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:17,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:17,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:17,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 21:48:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:17,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:48:17,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:17,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-24 21:48:17,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:17,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:17,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:17,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:17,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:17,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:17,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:17,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:17,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:17,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:17,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:17,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:17,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:17,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:17,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:17,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 21:48:17,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:17,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:17,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:17,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:17,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:17,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:17,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:17,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:18,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:48:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:18,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:48:18,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348276576] [2023-11-24 21:48:18,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348276576] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:48:18,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:48:18,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-24 21:48:18,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414702018] [2023-11-24 21:48:18,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:48:18,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:48:18,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:48:18,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:48:18,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:48:19,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 99 [2023-11-24 21:48:19,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 97 transitions, 264 flow. Second operand has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:19,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:48:19,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 99 [2023-11-24 21:48:19,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:48:24,745 INFO L124 PetriNetUnfolderBase]: 5736/9627 cut-off events. [2023-11-24 21:48:24,745 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-24 21:48:24,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17753 conditions, 9627 events. 5736/9627 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 71756 event pairs, 5236 based on Foata normal form. 0/5745 useless extension candidates. Maximal degree in co-relation 17599. Up to 7894 conditions per place. [2023-11-24 21:48:24,858 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 51 selfloop transitions, 37 changer transitions 0/124 dead transitions. [2023-11-24 21:48:24,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 124 transitions, 560 flow [2023-11-24 21:48:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:48:24,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:48:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 527 transitions. [2023-11-24 21:48:24,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323232323232323 [2023-11-24 21:48:24,863 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 527 transitions. [2023-11-24 21:48:24,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 527 transitions. [2023-11-24 21:48:24,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:48:24,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 527 transitions. [2023-11-24 21:48:24,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 52.7) internal successors, (527), 10 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) [2023-11-24 21:48:24,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:24,871 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:24,872 INFO L175 Difference]: Start difference. First operand has 90 places, 97 transitions, 264 flow. Second operand 10 states and 527 transitions. [2023-11-24 21:48:24,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 124 transitions, 560 flow [2023-11-24 21:48:24,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 124 transitions, 560 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:48:24,878 INFO L231 Difference]: Finished difference. Result has 102 places, 124 transitions, 508 flow [2023-11-24 21:48:24,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=508, PETRI_PLACES=102, PETRI_TRANSITIONS=124} [2023-11-24 21:48:24,880 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 7 predicate places. [2023-11-24 21:48:24,881 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 124 transitions, 508 flow [2023-11-24 21:48:24,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:24,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:24,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:48:24,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:48:25,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:25,085 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:48:25,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash 928403184, now seen corresponding path program 1 times [2023-11-24 21:48:25,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:25,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383628699] [2023-11-24 21:48:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:25,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:25,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:25,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:25,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 21:48:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:25,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 21:48:25,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:25,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,342 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 21:48:25,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-24 21:48:25,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 1 [2023-11-24 21:48:25,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,446 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:25,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-24 21:48:25,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,527 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-24 21:48:25,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 1 [2023-11-24 21:48:25,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 1 [2023-11-24 21:48:25,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,627 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:25,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-24 21:48:25,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:25,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-24 21:48:25,721 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:48:25,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-24 21:48:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:25,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:48:25,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:48:25,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383628699] [2023-11-24 21:48:25,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383628699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:25,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:25,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:48:25,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262248647] [2023-11-24 21:48:25,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:25,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:48:25,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:48:25,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:48:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:48:25,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 99 [2023-11-24 21:48:25,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 124 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:25,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:48:25,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 99 [2023-11-24 21:48:25,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:48:27,406 INFO L124 PetriNetUnfolderBase]: 5736/9509 cut-off events. [2023-11-24 21:48:27,406 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-11-24 21:48:27,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17698 conditions, 9509 events. 5736/9509 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 69478 event pairs, 5236 based on Foata normal form. 1054/6805 useless extension candidates. Maximal degree in co-relation 17609. Up to 7922 conditions per place. [2023-11-24 21:48:27,504 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 84 selfloop transitions, 1 changer transitions 0/122 dead transitions. [2023-11-24 21:48:27,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 122 transitions, 674 flow [2023-11-24 21:48:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:48:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2023-11-24 21:48:27,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-24 21:48:27,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2023-11-24 21:48:27,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2023-11-24 21:48:27,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:48:27,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2023-11-24 21:48:27,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:27,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:27,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:27,513 INFO L175 Difference]: Start difference. First operand has 102 places, 124 transitions, 508 flow. Second operand 3 states and 183 transitions. [2023-11-24 21:48:27,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 122 transitions, 674 flow [2023-11-24 21:48:27,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 122 transitions, 579 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-11-24 21:48:27,521 INFO L231 Difference]: Finished difference. Result has 98 places, 122 transitions, 411 flow [2023-11-24 21:48:27,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=98, PETRI_TRANSITIONS=122} [2023-11-24 21:48:27,524 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 3 predicate places. [2023-11-24 21:48:27,524 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 122 transitions, 411 flow [2023-11-24 21:48:27,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:27,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:27,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:48:27,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:48:27,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:27,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:48:27,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:27,730 INFO L85 PathProgramCache]: Analyzing trace with hash 928403185, now seen corresponding path program 1 times [2023-11-24 21:48:27,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:27,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714403232] [2023-11-24 21:48:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:27,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:27,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:27,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:27,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 21:48:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:27,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:48:27,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:27,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:27,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:27,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-24 21:48:27,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:27,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:27,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-24 21:48:28,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:28,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:28,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:28,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:28,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 21:48:28,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:28,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:28,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:28,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:28,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:28,170 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 [2023-11-24 21:48:28,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:28,201 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 [2023-11-24 21:48:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:28,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:48:28,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:48:28,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714403232] [2023-11-24 21:48:28,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714403232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:28,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:28,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:48:28,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913904243] [2023-11-24 21:48:28,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:28,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:48:28,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:48:28,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:48:28,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:48:28,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 99 [2023-11-24 21:48:28,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 122 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:28,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:48:28,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 99 [2023-11-24 21:48:28,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:48:29,831 INFO L124 PetriNetUnfolderBase]: 5736/9391 cut-off events. [2023-11-24 21:48:29,832 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-24 21:48:29,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17535 conditions, 9391 events. 5736/9391 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 67432 event pairs, 5236 based on Foata normal form. 1054/6803 useless extension candidates. Maximal degree in co-relation 17522. Up to 7922 conditions per place. [2023-11-24 21:48:29,914 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 84 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2023-11-24 21:48:29,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 120 transitions, 577 flow [2023-11-24 21:48:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:29,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:48:29,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2023-11-24 21:48:29,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-24 21:48:29,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2023-11-24 21:48:29,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2023-11-24 21:48:29,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:48:29,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2023-11-24 21:48:29,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:29,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:29,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:29,920 INFO L175 Difference]: Start difference. First operand has 98 places, 122 transitions, 411 flow. Second operand 3 states and 183 transitions. [2023-11-24 21:48:29,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 120 transitions, 577 flow [2023-11-24 21:48:29,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 120 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:48:29,926 INFO L231 Difference]: Finished difference. Result has 97 places, 120 transitions, 408 flow [2023-11-24 21:48:29,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=97, PETRI_TRANSITIONS=120} [2023-11-24 21:48:29,927 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 2 predicate places. [2023-11-24 21:48:29,928 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 120 transitions, 408 flow [2023-11-24 21:48:29,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:29,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:29,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:48:29,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:48:30,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:30,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:48:30,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:30,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1529130788, now seen corresponding path program 1 times [2023-11-24 21:48:30,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:30,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392643933] [2023-11-24 21:48:30,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:30,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:30,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:30,135 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:30,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 21:48:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:30,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:48:30,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:30,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,334 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 17 treesize of output 11 [2023-11-24 21:48:30,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,382 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:30,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-24 21:48:30,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,429 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:30,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-24 21:48:30,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 21:48:30,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-24 21:48:30,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,563 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:30,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-24 21:48:30,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,604 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:30,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-24 21:48:30,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 21:48:30,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:30,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-24 21:48:30,727 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:48:30,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-24 21:48:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:30,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:48:30,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:48:30,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392643933] [2023-11-24 21:48:30,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392643933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:30,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:30,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:48:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801311917] [2023-11-24 21:48:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:30,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:48:30,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:48:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:48:30,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:48:31,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 99 [2023-11-24 21:48:31,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 120 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:31,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:48:31,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 99 [2023-11-24 21:48:31,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:48:32,106 INFO L124 PetriNetUnfolderBase]: 5736/9381 cut-off events. [2023-11-24 21:48:32,106 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-24 21:48:32,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17526 conditions, 9381 events. 5736/9381 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 67235 event pairs, 5236 based on Foata normal form. 85/5834 useless extension candidates. Maximal degree in co-relation 17512. Up to 7922 conditions per place. [2023-11-24 21:48:32,189 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 84 selfloop transitions, 1 changer transitions 0/118 dead transitions. [2023-11-24 21:48:32,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 118 transitions, 574 flow [2023-11-24 21:48:32,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:48:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2023-11-24 21:48:32,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-24 21:48:32,192 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2023-11-24 21:48:32,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2023-11-24 21:48:32,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:48:32,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2023-11-24 21:48:32,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:32,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:32,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:32,195 INFO L175 Difference]: Start difference. First operand has 97 places, 120 transitions, 408 flow. Second operand 3 states and 183 transitions. [2023-11-24 21:48:32,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 118 transitions, 574 flow [2023-11-24 21:48:32,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 118 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:48:32,200 INFO L231 Difference]: Finished difference. Result has 96 places, 118 transitions, 405 flow [2023-11-24 21:48:32,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=96, PETRI_TRANSITIONS=118} [2023-11-24 21:48:32,201 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 1 predicate places. [2023-11-24 21:48:32,202 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 118 transitions, 405 flow [2023-11-24 21:48:32,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:32,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:32,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:48:32,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-24 21:48:32,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:32,405 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:48:32,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:32,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1529130787, now seen corresponding path program 1 times [2023-11-24 21:48:32,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:32,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635103128] [2023-11-24 21:48:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:32,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:32,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:32,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:32,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 21:48:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:32,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:48:32,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:32,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-24 21:48:32,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-11-24 21:48:32,715 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:48:32,721 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:48:32,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:32,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:32,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:32,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:32,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,869 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:48:32,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:32,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,932 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 [2023-11-24 21:48:32,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:32,973 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 [2023-11-24 21:48:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:33,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:48:33,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:48:33,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635103128] [2023-11-24 21:48:33,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635103128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:33,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:33,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:48:33,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488337621] [2023-11-24 21:48:33,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:33,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:48:33,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:48:33,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:48:33,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:48:33,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 99 [2023-11-24 21:48:33,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 118 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:33,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:48:33,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 99 [2023-11-24 21:48:33,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:48:34,582 INFO L124 PetriNetUnfolderBase]: 5736/9371 cut-off events. [2023-11-24 21:48:34,583 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-24 21:48:34,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17517 conditions, 9371 events. 5736/9371 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 67081 event pairs, 5236 based on Foata normal form. 85/5834 useless extension candidates. Maximal degree in co-relation 17502. Up to 7922 conditions per place. [2023-11-24 21:48:34,668 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 84 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2023-11-24 21:48:34,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 116 transitions, 571 flow [2023-11-24 21:48:34,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:34,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:48:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2023-11-24 21:48:34,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-24 21:48:34,671 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2023-11-24 21:48:34,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2023-11-24 21:48:34,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:48:34,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2023-11-24 21:48:34,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:34,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:34,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:34,675 INFO L175 Difference]: Start difference. First operand has 96 places, 118 transitions, 405 flow. Second operand 3 states and 183 transitions. [2023-11-24 21:48:34,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 116 transitions, 571 flow [2023-11-24 21:48:34,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 116 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:48:34,681 INFO L231 Difference]: Finished difference. Result has 95 places, 116 transitions, 402 flow [2023-11-24 21:48:34,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=95, PETRI_TRANSITIONS=116} [2023-11-24 21:48:34,682 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 0 predicate places. [2023-11-24 21:48:34,682 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 116 transitions, 402 flow [2023-11-24 21:48:34,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:34,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:34,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:48:34,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-24 21:48:34,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:34,886 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:48:34,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:34,887 INFO L85 PathProgramCache]: Analyzing trace with hash -158399072, now seen corresponding path program 1 times [2023-11-24 21:48:34,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:34,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036871230] [2023-11-24 21:48:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:34,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:34,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:34,890 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:34,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 21:48:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:35,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:48:35,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:35,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:48:35,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:48:35,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036871230] [2023-11-24 21:48:35,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036871230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:35,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:35,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:48:35,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66278999] [2023-11-24 21:48:35,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:35,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:48:35,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:48:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:48:35,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:48:35,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 99 [2023-11-24 21:48:35,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 116 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:35,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:48:35,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 99 [2023-11-24 21:48:35,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:48:36,609 INFO L124 PetriNetUnfolderBase]: 5940/9789 cut-off events. [2023-11-24 21:48:36,609 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2023-11-24 21:48:36,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18336 conditions, 9789 events. 5940/9789 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 70351 event pairs, 5419 based on Foata normal form. 99/6218 useless extension candidates. Maximal degree in co-relation 18320. Up to 7916 conditions per place. [2023-11-24 21:48:36,673 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 128 selfloop transitions, 3 changer transitions 1/163 dead transitions. [2023-11-24 21:48:36,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 163 transitions, 850 flow [2023-11-24 21:48:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:48:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:48:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2023-11-24 21:48:36,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6717171717171717 [2023-11-24 21:48:36,676 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 266 transitions. [2023-11-24 21:48:36,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 266 transitions. [2023-11-24 21:48:36,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:48:36,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 266 transitions. [2023-11-24 21:48:36,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:36,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:36,679 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:36,680 INFO L175 Difference]: Start difference. First operand has 95 places, 116 transitions, 402 flow. Second operand 4 states and 266 transitions. [2023-11-24 21:48:36,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 163 transitions, 850 flow [2023-11-24 21:48:36,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 163 transitions, 849 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:48:36,686 INFO L231 Difference]: Finished difference. Result has 98 places, 116 transitions, 422 flow [2023-11-24 21:48:36,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=422, PETRI_PLACES=98, PETRI_TRANSITIONS=116} [2023-11-24 21:48:36,688 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 3 predicate places. [2023-11-24 21:48:36,688 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 116 transitions, 422 flow [2023-11-24 21:48:36,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:36,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:36,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:48:36,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-24 21:48:36,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:36,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:48:36,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1911165557, now seen corresponding path program 1 times [2023-11-24 21:48:36,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:36,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698371236] [2023-11-24 21:48:36,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:36,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:36,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:36,894 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:36,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 21:48:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:37,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:48:37,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:37,097 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 21:48:37,097 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 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-24 21:48:37,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,138 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:37,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-24 21:48:37,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,151 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:37,152 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 1 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 21:48:37,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,176 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:37,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-24 21:48:37,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,216 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:37,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-24 21:48:37,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,231 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:37,232 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 1 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 21:48:37,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,252 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:37,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-24 21:48:37,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,292 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:37,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-24 21:48:37,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,308 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:37,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-24 21:48:37,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,352 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:37,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-24 21:48:37,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,412 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:37,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-24 21:48:37,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,458 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:48:37,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-24 21:48:37,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:37,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-24 21:48:37,545 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:48:37,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-24 21:48:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:37,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:48:37,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:48:37,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698371236] [2023-11-24 21:48:37,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698371236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:37,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:37,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:48:37,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792662565] [2023-11-24 21:48:37,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:37,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:48:37,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:48:37,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:48:37,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:48:37,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 99 [2023-11-24 21:48:37,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 116 transitions, 422 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:37,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:48:37,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 99 [2023-11-24 21:48:37,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:48:39,280 INFO L124 PetriNetUnfolderBase]: 6090/9935 cut-off events. [2023-11-24 21:48:39,280 INFO L125 PetriNetUnfolderBase]: For 727/730 co-relation queries the response was YES. [2023-11-24 21:48:39,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19968 conditions, 9935 events. 6090/9935 cut-off events. For 727/730 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 70010 event pairs, 5380 based on Foata normal form. 127/6436 useless extension candidates. Maximal degree in co-relation 19950. Up to 8222 conditions per place. [2023-11-24 21:48:39,348 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 84 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2023-11-24 21:48:39,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 114 transitions, 588 flow [2023-11-24 21:48:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:48:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2023-11-24 21:48:39,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-24 21:48:39,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2023-11-24 21:48:39,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2023-11-24 21:48:39,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:48:39,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2023-11-24 21:48:39,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:39,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:39,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:39,358 INFO L175 Difference]: Start difference. First operand has 98 places, 116 transitions, 422 flow. Second operand 3 states and 183 transitions. [2023-11-24 21:48:39,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 114 transitions, 588 flow [2023-11-24 21:48:39,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 114 transitions, 584 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-24 21:48:39,365 INFO L231 Difference]: Finished difference. Result has 97 places, 114 transitions, 416 flow [2023-11-24 21:48:39,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=97, PETRI_TRANSITIONS=114} [2023-11-24 21:48:39,366 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 2 predicate places. [2023-11-24 21:48:39,367 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 114 transitions, 416 flow [2023-11-24 21:48:39,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:39,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:39,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:48:39,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-24 21:48:39,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:39,571 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:48:39,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:39,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1911165556, now seen corresponding path program 1 times [2023-11-24 21:48:39,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:39,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424995805] [2023-11-24 21:48:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:39,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:39,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:39,573 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:39,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 21:48:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:39,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 21:48:39,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:39,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-24 21:48:39,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,872 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:48:39,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,892 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:48:39,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:39,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:39,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,943 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:48:39,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:39,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,976 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:48:39,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:39,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:40,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:40,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:40,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:40,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:40,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:40,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:40,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:40,051 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:48:40,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:40,098 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 [2023-11-24 21:48:40,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:40,156 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 [2023-11-24 21:48:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:40,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:48:40,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:48:40,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424995805] [2023-11-24 21:48:40,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424995805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:40,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:40,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:48:40,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58769404] [2023-11-24 21:48:40,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:40,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:48:40,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:48:40,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:48:40,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:48:40,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 99 [2023-11-24 21:48:40,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 114 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:40,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:48:40,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 99 [2023-11-24 21:48:40,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:48:42,161 INFO L124 PetriNetUnfolderBase]: 6090/9905 cut-off events. [2023-11-24 21:48:42,161 INFO L125 PetriNetUnfolderBase]: For 727/730 co-relation queries the response was YES. [2023-11-24 21:48:42,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19937 conditions, 9905 events. 6090/9905 cut-off events. For 727/730 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 69657 event pairs, 5380 based on Foata normal form. 127/6436 useless extension candidates. Maximal degree in co-relation 19918. Up to 8222 conditions per place. [2023-11-24 21:48:42,255 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 84 selfloop transitions, 1 changer transitions 0/112 dead transitions. [2023-11-24 21:48:42,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 112 transitions, 582 flow [2023-11-24 21:48:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:48:42,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2023-11-24 21:48:42,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-24 21:48:42,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2023-11-24 21:48:42,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2023-11-24 21:48:42,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:48:42,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2023-11-24 21:48:42,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:42,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:42,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:42,262 INFO L175 Difference]: Start difference. First operand has 97 places, 114 transitions, 416 flow. Second operand 3 states and 183 transitions. [2023-11-24 21:48:42,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 112 transitions, 582 flow [2023-11-24 21:48:42,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 112 transitions, 581 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:48:42,268 INFO L231 Difference]: Finished difference. Result has 96 places, 112 transitions, 413 flow [2023-11-24 21:48:42,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=413, PETRI_PLACES=96, PETRI_TRANSITIONS=112} [2023-11-24 21:48:42,270 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 1 predicate places. [2023-11-24 21:48:42,270 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 112 transitions, 413 flow [2023-11-24 21:48:42,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:42,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:42,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:48:42,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-24 21:48:42,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:42,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:48:42,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:42,475 INFO L85 PathProgramCache]: Analyzing trace with hash -15646402, now seen corresponding path program 1 times [2023-11-24 21:48:42,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:42,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939790822] [2023-11-24 21:48:42,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:42,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:42,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:42,478 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:42,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-24 21:48:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:42,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:48:42,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:42,709 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 [2023-11-24 21:48:42,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:42,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:42,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:42,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:48:42,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:48:42,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:42,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:42,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:42,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:48:42,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:42,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:48:42,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:42,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:42,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:42,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:48:42,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:42,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:42,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:42,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:42,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:48:42,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 21:48:42,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:42,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:48:43,029 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:48:43,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-24 21:48:43,062 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:48:43,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-24 21:48:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:48:43,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:48:43,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:48:43,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939790822] [2023-11-24 21:48:43,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939790822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:43,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:43,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:48:43,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708263817] [2023-11-24 21:48:43,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:43,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:48:43,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:48:43,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:48:43,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:48:43,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 99 [2023-11-24 21:48:43,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 112 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:43,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:48:43,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 99 [2023-11-24 21:48:43,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:48:44,585 INFO L124 PetriNetUnfolderBase]: 5392/8753 cut-off events. [2023-11-24 21:48:44,586 INFO L125 PetriNetUnfolderBase]: For 674/677 co-relation queries the response was YES. [2023-11-24 21:48:44,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17236 conditions, 8753 events. 5392/8753 cut-off events. For 674/677 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 58582 event pairs, 4657 based on Foata normal form. 0/5895 useless extension candidates. Maximal degree in co-relation 17216. Up to 7144 conditions per place. [2023-11-24 21:48:44,657 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 73 selfloop transitions, 11 changer transitions 0/109 dead transitions. [2023-11-24 21:48:44,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 109 transitions, 571 flow [2023-11-24 21:48:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:48:44,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:48:44,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 256 transitions. [2023-11-24 21:48:44,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171717171717172 [2023-11-24 21:48:44,660 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 256 transitions. [2023-11-24 21:48:44,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 256 transitions. [2023-11-24 21:48:44,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:48:44,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 256 transitions. [2023-11-24 21:48:44,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:44,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:44,663 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:44,664 INFO L175 Difference]: Start difference. First operand has 96 places, 112 transitions, 413 flow. Second operand 5 states and 256 transitions. [2023-11-24 21:48:44,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 109 transitions, 571 flow [2023-11-24 21:48:44,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:48:44,670 INFO L231 Difference]: Finished difference. Result has 96 places, 109 transitions, 424 flow [2023-11-24 21:48:44,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=96, PETRI_TRANSITIONS=109} [2023-11-24 21:48:44,673 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, 1 predicate places. [2023-11-24 21:48:44,674 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 109 transitions, 424 flow [2023-11-24 21:48:44,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:48:44,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:44,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:48:44,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-24 21:48:44,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:44,878 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:48:44,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:44,878 INFO L85 PathProgramCache]: Analyzing trace with hash -15646401, now seen corresponding path program 1 times [2023-11-24 21:48:44,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:48:44,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874714277] [2023-11-24 21:48:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:44,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:48:44,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:48:44,880 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:48:44,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bff693da-22d0-4b9a-94bd-24631b3f8625/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-24 21:48:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:45,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-24 21:48:45,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:48:45,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-24 21:48:45,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2023-11-24 21:48:45,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:45,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:45,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 21:48:45,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:45,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:45,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:45,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:45,374 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 [2023-11-24 21:48:45,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:45,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:45,419 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 [2023-11-24 21:48:45,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:45,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:45,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:45,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:45,521 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 [2023-11-24 21:48:45,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:45,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:45,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:48:45,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:45,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:45,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:48:45,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:45,660 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 [2023-11-24 21:48:45,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:45,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:45,704 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 [2023-11-24 21:48:45,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:48:45,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:48:45,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:45,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 21:48:46,023 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:48:46,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-24 21:48:46,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:48:46,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 21:48:46,149 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:48:46,150 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 [2023-11-24 21:48:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:48:46,300 INFO L327 TraceCheckSpWp]: Computing backward predicates...