./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu --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 bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:26,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:26,606 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 08:06:26,610 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:26,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:26,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:26,640 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:26,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:26,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:26,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:26,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:26,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:26,644 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:26,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:26,645 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:26,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:26,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:26,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:26,647 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:06:26,648 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:06:26,649 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:06:26,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:26,650 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:06:26,651 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:06:26,651 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:26,652 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:26,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:26,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:26,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:26,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:26,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:26,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:26,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:26,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:26,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:26,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:26,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:26,658 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:26,659 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_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2023-11-19 08:06:26,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:26,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:26,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:26,995 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:26,996 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:26,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2023-11-19 08:06:30,260 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:30,501 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:30,501 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2023-11-19 08:06:30,511 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/data/17d2258a8/99fa0cd5dd6547b7ab6248bdbe96b234/FLAGe237dc86b [2023-11-19 08:06:30,525 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/data/17d2258a8/99fa0cd5dd6547b7ab6248bdbe96b234 [2023-11-19 08:06:30,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:30,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:30,532 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:30,532 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:30,538 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:30,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:30" (1/1) ... [2023-11-19 08:06:30,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c03e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:30, skipping insertion in model container [2023-11-19 08:06:30,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:30" (1/1) ... [2023-11-19 08:06:30,568 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:30,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:30,781 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) [2023-11-19 08:06:30,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2679c151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:30, skipping insertion in model container [2023-11-19 08:06:30,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:30,783 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 08:06:30,785 INFO L158 Benchmark]: Toolchain (without parser) took 253.48ms. Allocated memory is still 157.3MB. Free memory was 115.0MB in the beginning and 104.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 08:06:30,785 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:06:30,786 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.59ms. Allocated memory is still 157.3MB. Free memory was 115.0MB in the beginning and 104.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 08:06:30,788 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.59ms. Allocated memory is still 157.3MB. Free memory was 115.0MB in the beginning and 104.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 114]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu --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 bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:33,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:33,485 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 08:06:33,494 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:33,495 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:33,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:33,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:33,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:33,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:33,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:33,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:33,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:33,543 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:33,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:33,546 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:33,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:33,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:33,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:33,547 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:06:33,549 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:06:33,549 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:06:33,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:33,550 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:06:33,551 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 08:06:33,551 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 08:06:33,551 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:06:33,552 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:33,552 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:33,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:33,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:33,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:33,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:33,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:33,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:33,557 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 08:06:33,557 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 08:06:33,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:33,558 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:33,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:33,559 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 08:06:33,559 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:33,560 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_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2023-11-19 08:06:34,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:34,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:34,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:34,060 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:34,061 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:34,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2023-11-19 08:06:37,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:37,702 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:37,703 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2023-11-19 08:06:37,715 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/data/9565be64a/f185f00505a1446f82ec3bb0d7d6554b/FLAGf038b0309 [2023-11-19 08:06:37,993 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/data/9565be64a/f185f00505a1446f82ec3bb0d7d6554b [2023-11-19 08:06:37,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:37,997 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:38,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:38,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:38,009 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:38,010 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:38,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e210c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38, skipping insertion in model container [2023-11-19 08:06:38,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:37" (1/1) ... [2023-11-19 08:06:38,039 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:38,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:38,345 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 08:06:38,358 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:38,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:38,408 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:38,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:38,484 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:38,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38 WrapperNode [2023-11-19 08:06:38,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:38,486 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:38,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:38,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:38,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38" (1/1) ... [2023-11-19 08:06:38,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38" (1/1) ... [2023-11-19 08:06:38,574 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 131 [2023-11-19 08:06:38,574 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:38,575 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:38,576 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:38,576 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:38,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38" (1/1) ... [2023-11-19 08:06:38,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38" (1/1) ... [2023-11-19 08:06:38,628 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38" (1/1) ... [2023-11-19 08:06:38,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38" (1/1) ... [2023-11-19 08:06:38,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38" (1/1) ... [2023-11-19 08:06:38,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38" (1/1) ... [2023-11-19 08:06:38,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38" (1/1) ... [2023-11-19 08:06:38,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38" (1/1) ... [2023-11-19 08:06:38,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:38,677 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:38,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:38,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:38,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38" (1/1) ... [2023-11-19 08:06:38,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:38,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:38,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:38,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 08:06:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:06:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 08:06:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 08:06:38,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 08:06:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 08:06:38,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 08:06:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:06:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:38,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:06:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 08:06:38,778 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:06:38,965 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:38,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:39,693 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:39,706 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:39,707 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 08:06:39,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:39 BoogieIcfgContainer [2023-11-19 08:06:39,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:39,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:39,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:39,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:39,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:37" (1/3) ... [2023-11-19 08:06:39,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@936afdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:39, skipping insertion in model container [2023-11-19 08:06:39,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:38" (2/3) ... [2023-11-19 08:06:39,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@936afdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:39, skipping insertion in model container [2023-11-19 08:06:39,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:39" (3/3) ... [2023-11-19 08:06:39,723 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2023-11-19 08:06:39,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:39,745 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 08:06:39,745 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:06:39,935 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 08:06:39,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 263 transitions, 540 flow [2023-11-19 08:06:40,117 INFO L124 PetriNetUnfolderBase]: 21/261 cut-off events. [2023-11-19 08:06:40,117 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:06:40,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 261 events. 21/261 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 419 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 170. Up to 3 conditions per place. [2023-11-19 08:06:40,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 263 transitions, 540 flow [2023-11-19 08:06:40,135 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 256 transitions, 524 flow [2023-11-19 08:06:40,143 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:40,156 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 256 transitions, 524 flow [2023-11-19 08:06:40,167 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 256 transitions, 524 flow [2023-11-19 08:06:40,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 256 transitions, 524 flow [2023-11-19 08:06:40,224 INFO L124 PetriNetUnfolderBase]: 21/256 cut-off events. [2023-11-19 08:06:40,224 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:06:40,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 21/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 417 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 170. Up to 3 conditions per place. [2023-11-19 08:06:40,231 INFO L119 LiptonReduction]: Number of co-enabled transitions 5040 [2023-11-19 08:07:11,573 INFO L134 LiptonReduction]: Checked pairs total: 8180 [2023-11-19 08:07:11,574 INFO L136 LiptonReduction]: Total number of compositions: 298 [2023-11-19 08:07:11,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:11,604 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;@264388ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:11,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2023-11-19 08:07:11,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:07:11,618 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 08:07:11,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:07:11,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:11,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 08:07:11,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 08:07:11,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:11,626 INFO L85 PathProgramCache]: Analyzing trace with hash 32708, now seen corresponding path program 1 times [2023-11-19 08:07:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:11,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244322740] [2023-11-19 08:07:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:11,641 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 [2023-11-19 08:07:11,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:11,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:07:11,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:11,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:07:11,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:11,930 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 [2023-11-19 08:07:11,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:11,950 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 [2023-11-19 08:07:11,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:11,966 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 13 treesize of output 1 [2023-11-19 08:07:11,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:11,976 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 [2023-11-19 08:07:11,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:11,990 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 [2023-11-19 08:07:11,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:11,999 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 [2023-11-19 08:07:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:12,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:12,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:12,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244322740] [2023-11-19 08:07:12,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244322740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:12,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:12,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:07:12,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418660409] [2023-11-19 08:07:12,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:12,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:12,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:12,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:12,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 561 [2023-11-19 08:07:12,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:12,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:12,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 561 [2023-11-19 08:07:12,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:13,091 INFO L124 PetriNetUnfolderBase]: 901/1392 cut-off events. [2023-11-19 08:07:13,091 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-19 08:07:13,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2826 conditions, 1392 events. 901/1392 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6348 event pairs, 679 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 2648. Up to 1388 conditions per place. [2023-11-19 08:07:13,110 INFO L140 encePairwiseOnDemand]: 547/561 looper letters, 50 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2023-11-19 08:07:13,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 57 transitions, 240 flow [2023-11-19 08:07:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 763 transitions. [2023-11-19 08:07:13,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533571004159239 [2023-11-19 08:07:13,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 763 transitions. [2023-11-19 08:07:13,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 763 transitions. [2023-11-19 08:07:13,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:13,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 763 transitions. [2023-11-19 08:07:13,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:13,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:13,164 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:13,166 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 120 flow. Second operand 3 states and 763 transitions. [2023-11-19 08:07:13,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 57 transitions, 240 flow [2023-11-19 08:07:13,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 08:07:13,176 INFO L231 Difference]: Finished difference. Result has 49 places, 55 transitions, 158 flow [2023-11-19 08:07:13,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=49, PETRI_TRANSITIONS=55} [2023-11-19 08:07:13,183 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-11-19 08:07:13,183 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 55 transitions, 158 flow [2023-11-19 08:07:13,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:13,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:13,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 08:07:13,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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)] Ended with exit code 0 [2023-11-19 08:07:13,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:13,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 08:07:13,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:13,386 INFO L85 PathProgramCache]: Analyzing trace with hash 32707, now seen corresponding path program 1 times [2023-11-19 08:07:13,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:13,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779898177] [2023-11-19 08:07:13,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:13,387 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 [2023-11-19 08:07:13,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:13,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:07:13,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:13,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:13,466 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 [2023-11-19 08:07:13,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:13,488 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 [2023-11-19 08:07:13,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:13,500 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 [2023-11-19 08:07:13,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:13,510 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 [2023-11-19 08:07:13,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:13,524 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 [2023-11-19 08:07:13,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:13,536 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 [2023-11-19 08:07:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:13,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:13,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:13,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779898177] [2023-11-19 08:07:13,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779898177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:13,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:13,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:07:13,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060803353] [2023-11-19 08:07:13,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:13,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:13,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:13,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:13,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:13,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 561 [2023-11-19 08:07:13,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 55 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:13,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:13,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 561 [2023-11-19 08:07:13,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:14,296 INFO L124 PetriNetUnfolderBase]: 901/1388 cut-off events. [2023-11-19 08:07:14,296 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:07:14,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2817 conditions, 1388 events. 901/1388 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6324 event pairs, 679 based on Foata normal form. 4/434 useless extension candidates. Maximal degree in co-relation 2761. Up to 1380 conditions per place. [2023-11-19 08:07:14,306 INFO L140 encePairwiseOnDemand]: 555/561 looper letters, 46 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2023-11-19 08:07:14,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 260 flow [2023-11-19 08:07:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 754 transitions. [2023-11-19 08:07:14,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44800950683303625 [2023-11-19 08:07:14,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 754 transitions. [2023-11-19 08:07:14,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 754 transitions. [2023-11-19 08:07:14,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:14,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 754 transitions. [2023-11-19 08:07:14,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:14,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:14,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:14,322 INFO L175 Difference]: Start difference. First operand has 49 places, 55 transitions, 158 flow. Second operand 3 states and 754 transitions. [2023-11-19 08:07:14,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 260 flow [2023-11-19 08:07:14,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:07:14,327 INFO L231 Difference]: Finished difference. Result has 47 places, 53 transitions, 154 flow [2023-11-19 08:07:14,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=53} [2023-11-19 08:07:14,329 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-11-19 08:07:14,329 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 53 transitions, 154 flow [2023-11-19 08:07:14,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:14,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:14,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:07:14,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:14,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:14,536 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 08:07:14,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:14,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1017640, now seen corresponding path program 1 times [2023-11-19 08:07:14,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:14,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937985263] [2023-11-19 08:07:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:14,538 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 [2023-11-19 08:07:14,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:14,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:07:14,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:14,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:07:14,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:14,629 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 [2023-11-19 08:07:14,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:14,650 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 [2023-11-19 08:07:14,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:14,663 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 [2023-11-19 08:07:14,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:14,670 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 [2023-11-19 08:07:14,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:14,679 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 [2023-11-19 08:07:14,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:14,689 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 [2023-11-19 08:07:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:14,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:14,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:14,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937985263] [2023-11-19 08:07:14,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937985263] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:14,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:07:14,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 08:07:14,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300966544] [2023-11-19 08:07:14,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:14,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:07:14,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:14,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:07:14,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:07:16,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 561 [2023-11-19 08:07:16,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 53 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:16,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:16,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 561 [2023-11-19 08:07:16,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:18,261 INFO L124 PetriNetUnfolderBase]: 913/1406 cut-off events. [2023-11-19 08:07:18,261 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:07:18,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2880 conditions, 1406 events. 913/1406 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6368 event pairs, 679 based on Foata normal form. 0/439 useless extension candidates. Maximal degree in co-relation 2761. Up to 1395 conditions per place. [2023-11-19 08:07:18,272 INFO L140 encePairwiseOnDemand]: 552/561 looper letters, 46 selfloop transitions, 25 changer transitions 0/71 dead transitions. [2023-11-19 08:07:18,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 386 flow [2023-11-19 08:07:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:07:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:07:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1415 transitions. [2023-11-19 08:07:18,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4203802733214498 [2023-11-19 08:07:18,280 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1415 transitions. [2023-11-19 08:07:18,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1415 transitions. [2023-11-19 08:07:18,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:18,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1415 transitions. [2023-11-19 08:07:18,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 235.83333333333334) internal successors, (1415), 6 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:18,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:18,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 561.0) internal successors, (3927), 7 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:18,298 INFO L175 Difference]: Start difference. First operand has 47 places, 53 transitions, 154 flow. Second operand 6 states and 1415 transitions. [2023-11-19 08:07:18,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 386 flow [2023-11-19 08:07:18,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 71 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:07:18,301 INFO L231 Difference]: Finished difference. Result has 53 places, 71 transitions, 308 flow [2023-11-19 08:07:18,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=53, PETRI_TRANSITIONS=71} [2023-11-19 08:07:18,303 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-11-19 08:07:18,303 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 71 transitions, 308 flow [2023-11-19 08:07:18,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:18,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:18,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:07:18,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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)] Ended with exit code 0 [2023-11-19 08:07:18,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:18,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 08:07:18,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:18,508 INFO L85 PathProgramCache]: Analyzing trace with hash 31577470, now seen corresponding path program 1 times [2023-11-19 08:07:18,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:18,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325666426] [2023-11-19 08:07:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:18,508 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 [2023-11-19 08:07:18,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:18,515 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:07:18,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:18,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 08:07:18,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:18,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:18,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:18,675 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 [2023-11-19 08:07:18,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-11-19 08:07:18,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:18,726 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 5 [2023-11-19 08:07:18,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:18,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-19 08:07:18,856 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-19 08:07:18,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-19 08:07:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:18,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:19,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:19,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325666426] [2023-11-19 08:07:19,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325666426] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:19,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:19,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-11-19 08:07:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347831776] [2023-11-19 08:07:19,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:19,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:07:19,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:07:19,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:07:21,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 561 [2023-11-19 08:07:21,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 71 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 222.8) internal successors, (1114), 5 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:21,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:21,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 561 [2023-11-19 08:07:21,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:21,856 INFO L124 PetriNetUnfolderBase]: 684/1080 cut-off events. [2023-11-19 08:07:21,856 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-19 08:07:21,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 1080 events. 684/1080 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4761 event pairs, 504 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 2184. Up to 1066 conditions per place. [2023-11-19 08:07:21,864 INFO L140 encePairwiseOnDemand]: 554/561 looper letters, 56 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2023-11-19 08:07:21,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 66 transitions, 411 flow [2023-11-19 08:07:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:07:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:07:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1161 transitions. [2023-11-19 08:07:21,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.413903743315508 [2023-11-19 08:07:21,871 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1161 transitions. [2023-11-19 08:07:21,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1161 transitions. [2023-11-19 08:07:21,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:21,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1161 transitions. [2023-11-19 08:07:21,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 232.2) internal successors, (1161), 5 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:21,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 561.0) internal successors, (3366), 6 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:21,885 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 561.0) internal successors, (3366), 6 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:21,885 INFO L175 Difference]: Start difference. First operand has 53 places, 71 transitions, 308 flow. Second operand 5 states and 1161 transitions. [2023-11-19 08:07:21,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 66 transitions, 411 flow [2023-11-19 08:07:21,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 377 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-19 08:07:21,890 INFO L231 Difference]: Finished difference. Result has 55 places, 66 transitions, 265 flow [2023-11-19 08:07:21,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=55, PETRI_TRANSITIONS=66} [2023-11-19 08:07:21,891 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2023-11-19 08:07:21,891 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 66 transitions, 265 flow [2023-11-19 08:07:21,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.8) internal successors, (1114), 5 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:21,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:21,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:07:21,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:22,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:22,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 08:07:22,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:22,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1018631, now seen corresponding path program 1 times [2023-11-19 08:07:22,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:22,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324216297] [2023-11-19 08:07:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:22,102 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 [2023-11-19 08:07:22,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:22,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:07:22,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:22,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:07:22,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:22,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:22,230 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 5 [2023-11-19 08:07:22,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:22,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-19 08:07:22,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:22,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:22,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:22,296 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 [2023-11-19 08:07:22,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:22,343 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 [2023-11-19 08:07:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:22,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:22,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:22,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324216297] [2023-11-19 08:07:22,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324216297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:22,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:22,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:22,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681075279] [2023-11-19 08:07:22,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:22,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:07:22,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:22,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:07:22,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:07:22,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 561 [2023-11-19 08:07:22,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:22,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:22,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 561 [2023-11-19 08:07:22,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:23,271 INFO L124 PetriNetUnfolderBase]: 684/1079 cut-off events. [2023-11-19 08:07:23,272 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-19 08:07:23,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2247 conditions, 1079 events. 684/1079 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4772 event pairs, 504 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 2178. Up to 1079 conditions per place. [2023-11-19 08:07:23,280 INFO L140 encePairwiseOnDemand]: 559/561 looper letters, 64 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-11-19 08:07:23,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 65 transitions, 388 flow [2023-11-19 08:07:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 763 transitions. [2023-11-19 08:07:23,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533571004159239 [2023-11-19 08:07:23,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 763 transitions. [2023-11-19 08:07:23,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 763 transitions. [2023-11-19 08:07:23,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:23,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 763 transitions. [2023-11-19 08:07:23,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:23,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:23,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:23,294 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 265 flow. Second operand 3 states and 763 transitions. [2023-11-19 08:07:23,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 65 transitions, 388 flow [2023-11-19 08:07:23,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 378 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 08:07:23,301 INFO L231 Difference]: Finished difference. Result has 54 places, 65 transitions, 250 flow [2023-11-19 08:07:23,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=54, PETRI_TRANSITIONS=65} [2023-11-19 08:07:23,304 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-11-19 08:07:23,307 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 65 transitions, 250 flow [2023-11-19 08:07:23,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:07:23,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:23,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:07:23,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:23,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:23,517 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 08:07:23,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:23,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1018632, now seen corresponding path program 1 times [2023-11-19 08:07:23,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:07:23,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532680042] [2023-11-19 08:07:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:23,518 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 [2023-11-19 08:07:23,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:07:23,519 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 08:07:23,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8720706c-252b-4295-8dfe-79f0fb246543/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 08:07:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:07:23,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:23,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:23,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:23,636 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 [2023-11-19 08:07:23,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:23,688 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-19 08:07:23,688 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 [2023-11-19 08:07:23,741 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 08:07:23,741 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 [2023-11-19 08:07:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:23,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:23,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 08:07:23,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532680042] [2023-11-19 08:07:23,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532680042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:23,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:23,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:07:23,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996735626] [2023-11-19 08:07:23,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:23,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:23,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 08:07:23,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:23,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:23,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 561