./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-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_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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_c551d329-f0c7-41fb-ad1b-081c6960535f/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 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:11,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:11,642 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:39:11,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:11,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:11,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:11,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:11,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:11,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:11,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:11,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:11,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:11,681 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:11,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:11,683 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:11,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:11,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:11,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:11,685 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:39:11,686 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:39:11,687 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:39:11,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:11,688 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:39:11,689 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:39:11,689 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:11,690 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:11,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:11,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:11,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:11,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:11,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:11,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:11,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:39:11,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:39:11,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:11,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:11,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:11,696 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:11,696 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_c551d329-f0c7-41fb-ad1b-081c6960535f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2023-11-19 07:39:12,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:12,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:12,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:12,045 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:12,046 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:12,048 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2023-11-19 07:39:15,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:15,569 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:15,569 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2023-11-19 07:39:15,578 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/data/26332ece9/aa59f049fac94b3186d8c29cb11dc934/FLAGb0daaf4b1 [2023-11-19 07:39:15,595 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/data/26332ece9/aa59f049fac94b3186d8c29cb11dc934 [2023-11-19 07:39:15,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:15,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:15,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:15,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:15,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:15,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b231bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15, skipping insertion in model container [2023-11-19 07:39:15,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,643 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:15,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:15,849 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 07:39:15,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3085cc10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15, skipping insertion in model container [2023-11-19 07:39:15,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:15,850 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:39:15,852 INFO L158 Benchmark]: Toolchain (without parser) took 252.15ms. Allocated memory is still 134.2MB. Free memory was 70.6MB in the beginning and 60.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:39:15,853 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:39:15,854 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.27ms. Allocated memory is still 134.2MB. Free memory was 70.4MB in the beginning and 60.4MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:39:15,855 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.27ms. Allocated memory is still 134.2MB. Free memory was 70.4MB in the beginning and 60.4MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 101]: 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_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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_c551d329-f0c7-41fb-ad1b-081c6960535f/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 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:18,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:18,634 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:39:18,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:18,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:18,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:18,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:18,699 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:18,700 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:18,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:18,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:18,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:18,707 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:18,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:18,709 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:18,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:18,710 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:18,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:18,711 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:39:18,712 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:39:18,712 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:39:18,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:18,713 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:39:18,714 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:39:18,714 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:39:18,714 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:39:18,715 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:18,715 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:18,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:18,717 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:18,718 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:18,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:18,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:18,719 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:18,719 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:39:18,720 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:39:18,720 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:18,720 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:18,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:18,721 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:39:18,722 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:18,722 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_c551d329-f0c7-41fb-ad1b-081c6960535f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2023-11-19 07:39:19,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:19,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:19,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:19,183 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:19,183 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:19,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2023-11-19 07:39:22,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:22,962 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:22,963 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2023-11-19 07:39:22,979 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/data/ebed6c8f2/e2cd9e9280c549e496c92022389b8faa/FLAGf9665243b [2023-11-19 07:39:23,001 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/data/ebed6c8f2/e2cd9e9280c549e496c92022389b8faa [2023-11-19 07:39:23,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:23,010 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:23,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:23,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:23,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:23,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e2b832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23, skipping insertion in model container [2023-11-19 07:39:23,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,064 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:23,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:23,364 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:39:23,369 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:23,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:23,417 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:23,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:23,471 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:23,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23 WrapperNode [2023-11-19 07:39:23,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:23,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:23,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:23,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:23,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,573 INFO L138 Inliner]: procedures = 27, calls = 40, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 201 [2023-11-19 07:39:23,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:23,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:23,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:23,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:23,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,603 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,608 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,614 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:23,620 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:23,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:23,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:23,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23" (1/1) ... [2023-11-19 07:39:23,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:23,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:23,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:23,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:39:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:39:23,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:39:23,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:39:23,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:39:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:39:23,749 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:39:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:39:23,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:23,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:23,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:39:23,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:39:23,754 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 07:39:23,916 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:23,919 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:24,863 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:24,889 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:24,890 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:39:24,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:24 BoogieIcfgContainer [2023-11-19 07:39:24,903 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:24,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:24,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:24,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:24,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:23" (1/3) ... [2023-11-19 07:39:24,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e85743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:24, skipping insertion in model container [2023-11-19 07:39:24,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:23" (2/3) ... [2023-11-19 07:39:24,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e85743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:24, skipping insertion in model container [2023-11-19 07:39:24,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:24" (3/3) ... [2023-11-19 07:39:24,918 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2023-11-19 07:39:24,942 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:24,942 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 07:39:24,943 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:39:25,215 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:39:25,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 291 transitions, 596 flow [2023-11-19 07:39:25,443 INFO L124 PetriNetUnfolderBase]: 21/289 cut-off events. [2023-11-19 07:39:25,443 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:39:25,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 289 events. 21/289 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 518 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 180. Up to 3 conditions per place. [2023-11-19 07:39:25,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 277 places, 291 transitions, 596 flow [2023-11-19 07:39:25,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 284 transitions, 580 flow [2023-11-19 07:39:25,468 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:25,490 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 270 places, 284 transitions, 580 flow [2023-11-19 07:39:25,495 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 270 places, 284 transitions, 580 flow [2023-11-19 07:39:25,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 284 transitions, 580 flow [2023-11-19 07:39:25,616 INFO L124 PetriNetUnfolderBase]: 21/284 cut-off events. [2023-11-19 07:39:25,616 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:39:25,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 284 events. 21/284 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 518 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 180. Up to 3 conditions per place. [2023-11-19 07:39:25,632 INFO L119 LiptonReduction]: Number of co-enabled transitions 9396 [2023-11-19 07:40:03,171 INFO L134 LiptonReduction]: Checked pairs total: 12440 [2023-11-19 07:40:03,172 INFO L136 LiptonReduction]: Total number of compositions: 341 [2023-11-19 07:40:03,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:03,196 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;@67ef809f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:03,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2023-11-19 07:40:03,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:40:03,201 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:40:03,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:03,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:03,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:40:03,203 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 07:40:03,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:03,210 INFO L85 PathProgramCache]: Analyzing trace with hash 36946, now seen corresponding path program 1 times [2023-11-19 07:40:03,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:03,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452530243] [2023-11-19 07:40:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:03,233 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 07:40:03,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:03,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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 07:40:03,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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 07:40:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:03,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:40:03,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:03,500 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 13 treesize of output 7 [2023-11-19 07:40:03,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:03,521 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 07:40:03,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:03,547 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 07:40:03,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:03,559 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 07:40:03,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:03,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:03,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:03,620 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 07:40:03,654 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 07:40:03,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:03,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:03,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452530243] [2023-11-19 07:40:03,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452530243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:03,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:03,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:03,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168895738] [2023-11-19 07:40:03,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:03,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:03,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:03,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:03,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:04,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 632 [2023-11-19 07:40:04,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 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 07:40:04,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:04,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 632 [2023-11-19 07:40:04,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:05,145 INFO L124 PetriNetUnfolderBase]: 809/1300 cut-off events. [2023-11-19 07:40:05,145 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:40:05,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2642 conditions, 1300 events. 809/1300 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6188 event pairs, 679 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 2472. Up to 1296 conditions per place. [2023-11-19 07:40:05,159 INFO L140 encePairwiseOnDemand]: 618/632 looper letters, 48 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2023-11-19 07:40:05,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 232 flow [2023-11-19 07:40:05,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-11-19 07:40:05,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393459915611814 [2023-11-19 07:40:05,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-11-19 07:40:05,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-11-19 07:40:05,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:05,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-11-19 07:40:05,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 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 07:40:05,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 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 07:40:05,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 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 07:40:05,210 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 116 flow. Second operand 3 states and 833 transitions. [2023-11-19 07:40:05,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 232 flow [2023-11-19 07:40:05,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:40:05,219 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 154 flow [2023-11-19 07:40:05,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2023-11-19 07:40:05,225 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-11-19 07:40:05,226 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 154 flow [2023-11-19 07:40:05,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 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 07:40:05,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:05,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:40:05,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:05,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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 07:40:05,431 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 07:40:05,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:05,431 INFO L85 PathProgramCache]: Analyzing trace with hash 36945, now seen corresponding path program 1 times [2023-11-19 07:40:05,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:05,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195251710] [2023-11-19 07:40:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:05,433 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 07:40:05,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:05,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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 07:40:05,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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 07:40:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:05,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:40:05,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:05,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:40:05,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:05,561 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 07:40:05,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:05,569 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 07:40:05,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:05,580 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 07:40:05,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:05,607 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 07:40:05,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:05,628 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 07:40:05,634 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 07:40:05,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:05,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:05,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195251710] [2023-11-19 07:40:05,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195251710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:05,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:05,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:05,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413241116] [2023-11-19 07:40:05,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:05,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:05,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:05,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:05,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:05,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 632 [2023-11-19 07:40:05,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 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 07:40:05,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:05,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 632 [2023-11-19 07:40:05,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:06,638 INFO L124 PetriNetUnfolderBase]: 809/1296 cut-off events. [2023-11-19 07:40:06,638 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:40:06,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2633 conditions, 1296 events. 809/1296 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6141 event pairs, 679 based on Foata normal form. 4/434 useless extension candidates. Maximal degree in co-relation 2577. Up to 1288 conditions per place. [2023-11-19 07:40:06,651 INFO L140 encePairwiseOnDemand]: 626/632 looper letters, 44 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-11-19 07:40:06,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 252 flow [2023-11-19 07:40:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 824 transitions. [2023-11-19 07:40:06,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4345991561181435 [2023-11-19 07:40:06,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 824 transitions. [2023-11-19 07:40:06,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 824 transitions. [2023-11-19 07:40:06,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:06,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 824 transitions. [2023-11-19 07:40:06,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 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 07:40:06,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 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 07:40:06,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 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 07:40:06,674 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 154 flow. Second operand 3 states and 824 transitions. [2023-11-19 07:40:06,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 252 flow [2023-11-19 07:40:06,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:06,680 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 150 flow [2023-11-19 07:40:06,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2023-11-19 07:40:06,682 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-11-19 07:40:06,682 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 150 flow [2023-11-19 07:40:06,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 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 07:40:06,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:06,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:40:06,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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 07:40:06,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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 07:40:06,887 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 07:40:06,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1148637, now seen corresponding path program 1 times [2023-11-19 07:40:06,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:06,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37992864] [2023-11-19 07:40:06,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:06,892 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 07:40:06,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:06,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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 07:40:06,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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 07:40:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:06,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:40:06,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:07,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-19 07:40:07,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:07,019 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 07:40:07,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:07,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:40:07,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:07,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:40:07,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:07,083 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 07:40:07,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:40:07,094 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 07:40:07,185 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 07:40:07,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:07,413 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 07:40:07,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:40:07,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37992864] [2023-11-19 07:40:07,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37992864] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:07,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:40:07,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 07:40:07,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548469149] [2023-11-19 07:40:07,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:07,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:07,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:40:07,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:07,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:09,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 632 [2023-11-19 07:40:09,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 07:40:09,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:09,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 632 [2023-11-19 07:40:09,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:10,951 INFO L124 PetriNetUnfolderBase]: 821/1314 cut-off events. [2023-11-19 07:40:10,952 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:40:10,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 1314 events. 821/1314 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6187 event pairs, 679 based on Foata normal form. 0/439 useless extension candidates. Maximal degree in co-relation 2577. Up to 1303 conditions per place. [2023-11-19 07:40:10,962 INFO L140 encePairwiseOnDemand]: 623/632 looper letters, 44 selfloop transitions, 25 changer transitions 0/69 dead transitions. [2023-11-19 07:40:10,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 378 flow [2023-11-19 07:40:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1557 transitions. [2023-11-19 07:40:10,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41060126582278483 [2023-11-19 07:40:10,970 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1557 transitions. [2023-11-19 07:40:10,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1557 transitions. [2023-11-19 07:40:10,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:10,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1557 transitions. [2023-11-19 07:40:10,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 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 07:40:10,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 632.0) internal successors, (4424), 7 states have internal predecessors, (4424), 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 07:40:10,989 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 632.0) internal successors, (4424), 7 states have internal predecessors, (4424), 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 07:40:10,989 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 150 flow. Second operand 6 states and 1557 transitions. [2023-11-19 07:40:10,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 378 flow [2023-11-19 07:40:10,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:10,994 INFO L231 Difference]: Finished difference. Result has 53 places, 69 transitions, 304 flow [2023-11-19 07:40:10,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=632, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=53, PETRI_TRANSITIONS=69} [2023-11-19 07:40:10,996 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-11-19 07:40:10,996 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 69 transitions, 304 flow [2023-11-19 07:40:10,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 07:40:10,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:10,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:40:11,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:11,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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 07:40:11,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 07:40:11,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:11,199 INFO L85 PathProgramCache]: Analyzing trace with hash 35669577, now seen corresponding path program 1 times [2023-11-19 07:40:11,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:40:11,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874671674] [2023-11-19 07:40:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:11,200 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 07:40:11,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:40:11,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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 07:40:11,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c551d329-f0c7-41fb-ad1b-081c6960535f/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