./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl --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 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:08:31,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:08:31,876 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-12 02:08:31,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:08:31,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:08:31,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:08:31,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:08:31,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:08:31,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:08:31,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:08:31,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:08:31,915 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:08:31,916 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:08:31,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:08:31,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:08:31,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:08:31,919 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:08:31,919 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:08:31,920 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:08:31,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:08:31,921 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:08:31,922 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:08:31,922 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:08:31,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:08:31,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:08:31,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:08:31,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:31,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:08:31,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:08:31,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:08:31,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:08:31,928 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:08:31,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:08:31,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:08:31,929 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:08:31,930 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_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2023-11-12 02:08:32,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:08:32,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:08:32,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:08:32,331 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:08:32,332 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:08:32,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2023-11-12 02:08:35,604 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:08:36,034 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:08:36,035 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2023-11-12 02:08:36,059 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/data/9e578272f/e2bb8ce4d8244d32a91c780cd8fc0db7/FLAGa7b6246f0 [2023-11-12 02:08:36,075 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/data/9e578272f/e2bb8ce4d8244d32a91c780cd8fc0db7 [2023-11-12 02:08:36,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:08:36,080 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:08:36,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:36,082 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:08:36,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:08:36,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:36" (1/1) ... [2023-11-12 02:08:36,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42942102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:36, skipping insertion in model container [2023-11-12 02:08:36,094 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:36" (1/1) ... [2023-11-12 02:08:36,184 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:36,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:36,963 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) [2023-11-12 02:08:36,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@761ec8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:36, skipping insertion in model container [2023-11-12 02:08:36,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:36,965 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 02:08:36,967 INFO L158 Benchmark]: Toolchain (without parser) took 886.32ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 74.4MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:08:36,968 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:08:36,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 883.52ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 74.4MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:08:36,970 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 883.52ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 74.4MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: 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_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl --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 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:08:39,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:08:39,752 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-11-12 02:08:39,778 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:08:39,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:08:39,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:08:39,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:08:39,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:08:39,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:08:39,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:08:39,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:08:39,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:08:39,839 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:08:39,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:08:39,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:08:39,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:08:39,843 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:08:39,843 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:08:39,844 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:08:39,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:08:39,846 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:08:39,846 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:08:39,847 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:08:39,847 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:08:39,848 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:08:39,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:08:39,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:08:39,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:08:39,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:39,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:08:39,852 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:08:39,852 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:08:39,853 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:08:39,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:08:39,853 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:08:39,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:08:39,854 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:08:39,854 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:08:39,854 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_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2023-11-12 02:08:40,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:08:40,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:08:40,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:08:40,338 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:08:40,339 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:08:40,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2023-11-12 02:08:43,593 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:08:44,010 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:08:44,010 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2023-11-12 02:08:44,046 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/data/821102416/d250351251674e71a4f08def1a5f3555/FLAG75c992a31 [2023-11-12 02:08:44,063 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/data/821102416/d250351251674e71a4f08def1a5f3555 [2023-11-12 02:08:44,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:08:44,071 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:08:44,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:44,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:08:44,081 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:08:44,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:44" (1/1) ... [2023-11-12 02:08:44,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2290f26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:44, skipping insertion in model container [2023-11-12 02:08:44,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:44" (1/1) ... [2023-11-12 02:08:44,154 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:45,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:45,250 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 02:08:45,267 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:45,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:45,334 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:08:45,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:45,522 WARN L672 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:45,529 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:08:45,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45 WrapperNode [2023-11-12 02:08:45,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:45,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:45,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:08:45,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:08:45,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45" (1/1) ... [2023-11-12 02:08:45,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45" (1/1) ... [2023-11-12 02:08:45,630 INFO L138 Inliner]: procedures = 353, calls = 115, calls flagged for inlining = 11, calls inlined = 10, statements flattened = 385 [2023-11-12 02:08:45,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:45,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:08:45,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:08:45,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:08:45,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45" (1/1) ... [2023-11-12 02:08:45,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45" (1/1) ... [2023-11-12 02:08:45,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45" (1/1) ... [2023-11-12 02:08:45,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45" (1/1) ... [2023-11-12 02:08:45,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45" (1/1) ... [2023-11-12 02:08:45,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45" (1/1) ... [2023-11-12 02:08:45,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45" (1/1) ... [2023-11-12 02:08:45,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45" (1/1) ... [2023-11-12 02:08:45,733 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:08:45,734 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:08:45,734 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:08:45,734 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:08:45,735 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45" (1/1) ... [2023-11-12 02:08:45,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:45,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:45,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:08:45,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:08:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 02:08:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 02:08:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:08:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:08:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:08:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-12 02:08:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:08:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 02:08:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 02:08:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-12 02:08:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:08:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-12 02:08:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:08:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:08:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:08:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:08:46,216 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:08:46,218 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:08:47,977 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:08:47,989 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:08:47,990 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-12 02:08:47,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:47 BoogieIcfgContainer [2023-11-12 02:08:47,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:08:47,997 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:08:47,997 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:08:48,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:08:48,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:08:44" (1/3) ... [2023-11-12 02:08:48,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30028a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:48, skipping insertion in model container [2023-11-12 02:08:48,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:45" (2/3) ... [2023-11-12 02:08:48,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30028a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:48, skipping insertion in model container [2023-11-12 02:08:48,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:47" (3/3) ... [2023-11-12 02:08:48,007 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-2.i [2023-11-12 02:08:48,026 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:08:48,027 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 94 error locations. [2023-11-12 02:08:48,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:08:48,098 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;@5200a47a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:08:48,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2023-11-12 02:08:48,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 247 states, 149 states have (on average 1.912751677852349) internal successors, (285), 243 states have internal predecessors, (285), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:48,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 02:08:48,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:48,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 02:08:48,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:08:48,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2023-11-12 02:08:48,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:48,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314261722] [2023-11-12 02:08:48,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:48,140 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 [2023-11-12 02:08:48,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:48,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:48,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:48,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:08:48,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:48,439 INFO L351 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 [2023-11-12 02:08:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:48,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:48,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:48,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314261722] [2023-11-12 02:08:48,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314261722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:48,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:48,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:08:48,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023325532] [2023-11-12 02:08:48,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:48,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:48,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:48,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:48,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:48,511 INFO L87 Difference]: Start difference. First operand has 247 states, 149 states have (on average 1.912751677852349) internal successors, (285), 243 states have internal predecessors, (285), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-12 02:08:49,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:49,199 INFO L93 Difference]: Finished difference Result 257 states and 288 transitions. [2023-11-12 02:08:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:49,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2023-11-12 02:08:49,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:49,214 INFO L225 Difference]: With dead ends: 257 [2023-11-12 02:08:49,214 INFO L226 Difference]: Without dead ends: 255 [2023-11-12 02:08:49,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:49,220 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 241 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:49,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 208 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:08:49,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-12 02:08:49,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 238. [2023-11-12 02:08:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 145 states have (on average 1.8206896551724139) internal successors, (264), 234 states have internal predecessors, (264), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 268 transitions. [2023-11-12 02:08:49,275 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 268 transitions. Word has length 3 [2023-11-12 02:08:49,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:49,275 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 268 transitions. [2023-11-12 02:08:49,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-12 02:08:49,276 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 268 transitions. [2023-11-12 02:08:49,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 02:08:49,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:49,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 02:08:49,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:49,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:49,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:08:49,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:49,494 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2023-11-12 02:08:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:49,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168047731] [2023-11-12 02:08:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:49,495 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 [2023-11-12 02:08:49,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:49,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:49,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:49,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:08:49,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:49,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:08:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:49,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:49,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:49,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168047731] [2023-11-12 02:08:49,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168047731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:49,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:49,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:08:49,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51494525] [2023-11-12 02:08:49,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:49,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:49,709 INFO L87 Difference]: Start difference. First operand 238 states and 268 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-12 02:08:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:50,712 INFO L93 Difference]: Finished difference Result 237 states and 267 transitions. [2023-11-12 02:08:50,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:50,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2023-11-12 02:08:50,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:50,717 INFO L225 Difference]: With dead ends: 237 [2023-11-12 02:08:50,717 INFO L226 Difference]: Without dead ends: 237 [2023-11-12 02:08:50,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:50,718 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 13 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:50,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 430 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 02:08:50,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-12 02:08:50,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-11-12 02:08:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 145 states have (on average 1.813793103448276) internal successors, (263), 233 states have internal predecessors, (263), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 267 transitions. [2023-11-12 02:08:50,758 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 267 transitions. Word has length 3 [2023-11-12 02:08:50,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:50,758 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 267 transitions. [2023-11-12 02:08:50,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-12 02:08:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 267 transitions. [2023-11-12 02:08:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 02:08:50,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:50,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:08:50,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:50,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:50,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:08:50,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:50,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2023-11-12 02:08:50,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:50,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271510609] [2023-11-12 02:08:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:50,983 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 [2023-11-12 02:08:50,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:50,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:50,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:51,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:08:51,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:51,167 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:08:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:51,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:51,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:51,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271510609] [2023-11-12 02:08:51,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271510609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:51,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:51,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:51,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682189433] [2023-11-12 02:08:51,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:51,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:08:51,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:51,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:08:51,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:51,236 INFO L87 Difference]: Start difference. First operand 237 states and 267 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-11-12 02:08:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:52,228 INFO L93 Difference]: Finished difference Result 241 states and 271 transitions. [2023-11-12 02:08:52,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:52,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) Word has length 6 [2023-11-12 02:08:52,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:52,231 INFO L225 Difference]: With dead ends: 241 [2023-11-12 02:08:52,231 INFO L226 Difference]: Without dead ends: 241 [2023-11-12 02:08:52,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:52,233 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 16 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:52,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 431 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 02:08:52,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-12 02:08:52,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2023-11-12 02:08:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 147 states have (on average 1.8027210884353742) internal successors, (265), 235 states have internal predecessors, (265), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2023-11-12 02:08:52,249 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 6 [2023-11-12 02:08:52,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:52,250 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2023-11-12 02:08:52,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-11-12 02:08:52,250 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2023-11-12 02:08:52,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 02:08:52,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:52,251 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:52,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:52,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:52,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:08:52,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:52,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2080656212, now seen corresponding path program 1 times [2023-11-12 02:08:52,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:52,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894798028] [2023-11-12 02:08:52,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:52,466 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 [2023-11-12 02:08:52,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:52,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:52,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:52,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:08:52,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:52,662 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:08:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:52,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:53,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:53,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894798028] [2023-11-12 02:08:53,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894798028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:53,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:53,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-12 02:08:53,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807907741] [2023-11-12 02:08:53,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:53,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:08:53,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:53,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:08:53,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:08:53,667 INFO L87 Difference]: Start difference. First operand 239 states and 269 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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) [2023-11-12 02:08:58,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:58,717 INFO L93 Difference]: Finished difference Result 245 states and 275 transitions. [2023-11-12 02:08:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:08:58,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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) Word has length 10 [2023-11-12 02:08:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:58,720 INFO L225 Difference]: With dead ends: 245 [2023-11-12 02:08:58,720 INFO L226 Difference]: Without dead ends: 245 [2023-11-12 02:08:58,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:08:58,722 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 19 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:58,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 944 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-12 02:08:58,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-12 02:08:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2023-11-12 02:08:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 154 states have (on average 1.7597402597402598) internal successors, (271), 241 states have internal predecessors, (271), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 275 transitions. [2023-11-12 02:08:58,742 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 275 transitions. Word has length 10 [2023-11-12 02:08:58,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:58,742 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 275 transitions. [2023-11-12 02:08:58,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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) [2023-11-12 02:08:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 275 transitions. [2023-11-12 02:08:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 02:08:58,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:58,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:58,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:58,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:58,959 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:08:58,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:58,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1026813049, now seen corresponding path program 1 times [2023-11-12 02:08:58,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:58,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789407885] [2023-11-12 02:08:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:58,961 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 [2023-11-12 02:08:58,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:58,962 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:58,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:59,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:08:59,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:59,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:59,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:59,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789407885] [2023-11-12 02:08:59,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789407885] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:59,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:59,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-12 02:08:59,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823314649] [2023-11-12 02:08:59,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:59,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:08:59,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:59,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:08:59,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:08:59,339 INFO L87 Difference]: Start difference. First operand 245 states and 275 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2023-11-12 02:08:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:08:59,655 INFO L93 Difference]: Finished difference Result 265 states and 295 transitions. [2023-11-12 02:08:59,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:08:59,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) Word has length 19 [2023-11-12 02:08:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:08:59,662 INFO L225 Difference]: With dead ends: 265 [2023-11-12 02:08:59,662 INFO L226 Difference]: Without dead ends: 265 [2023-11-12 02:08:59,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:08:59,665 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 15 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:08:59,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1829 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:08:59,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-12 02:08:59,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-11-12 02:08:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 174 states have (on average 1.6724137931034482) internal successors, (291), 261 states have internal predecessors, (291), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:08:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 295 transitions. [2023-11-12 02:08:59,693 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 295 transitions. Word has length 19 [2023-11-12 02:08:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:08:59,693 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 295 transitions. [2023-11-12 02:08:59,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2023-11-12 02:08:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 295 transitions. [2023-11-12 02:08:59,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 02:08:59,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:08:59,695 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:59,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:59,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:08:59,920 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:08:59,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:59,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1411098840, now seen corresponding path program 2 times [2023-11-12 02:08:59,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:59,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207855388] [2023-11-12 02:08:59,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:08:59,922 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 [2023-11-12 02:08:59,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:59,925 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:08:59,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:09:00,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:09:00,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:09:00,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:09:00,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:00,193 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:09:00,194 INFO L351 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 [2023-11-12 02:09:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-12 02:09:00,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:00,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:09:00,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207855388] [2023-11-12 02:09:00,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207855388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:00,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:00,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:09:00,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548678453] [2023-11-12 02:09:00,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:00,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:00,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:09:00,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:00,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:00,503 INFO L87 Difference]: Start difference. First operand 265 states and 295 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-11-12 02:09:00,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:00,998 INFO L93 Difference]: Finished difference Result 281 states and 312 transitions. [2023-11-12 02:09:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:00,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 39 [2023-11-12 02:09:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:01,001 INFO L225 Difference]: With dead ends: 281 [2023-11-12 02:09:01,001 INFO L226 Difference]: Without dead ends: 281 [2023-11-12 02:09:01,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:01,002 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 237 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:01,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 203 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:09:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-12 02:09:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 264. [2023-11-12 02:09:01,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 174 states have (on average 1.6666666666666667) internal successors, (290), 260 states have internal predecessors, (290), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:09:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 294 transitions. [2023-11-12 02:09:01,013 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 294 transitions. Word has length 39 [2023-11-12 02:09:01,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:01,013 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 294 transitions. [2023-11-12 02:09:01,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-11-12 02:09:01,014 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 294 transitions. [2023-11-12 02:09:01,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 02:09:01,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:01,015 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:01,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:01,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:09:01,247 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:09:01,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1411098841, now seen corresponding path program 1 times [2023-11-12 02:09:01,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:09:01,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722972834] [2023-11-12 02:09:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:01,249 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 [2023-11-12 02:09:01,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:09:01,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:09:01,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-12 02:09:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:01,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:09:01,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:01,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:09:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:02,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:09:02,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722972834] [2023-11-12 02:09:02,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722972834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:09:02,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:09:02,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-11-12 02:09:02,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258323301] [2023-11-12 02:09:02,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:09:02,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-12 02:09:02,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:09:02,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-12 02:09:02,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-11-12 02:09:02,124 INFO L87 Difference]: Start difference. First operand 264 states and 294 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 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) [2023-11-12 02:09:02,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:02,783 INFO L93 Difference]: Finished difference Result 272 states and 302 transitions. [2023-11-12 02:09:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:09:02,784 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 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) Word has length 39 [2023-11-12 02:09:02,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:02,786 INFO L225 Difference]: With dead ends: 272 [2023-11-12 02:09:02,787 INFO L226 Difference]: Without dead ends: 272 [2023-11-12 02:09:02,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-11-12 02:09:02,788 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 6 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:02,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2909 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:09:02,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-12 02:09:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2023-11-12 02:09:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 182 states have (on average 1.6373626373626373) internal successors, (298), 268 states have internal predecessors, (298), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:09:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 302 transitions. [2023-11-12 02:09:02,798 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 302 transitions. Word has length 39 [2023-11-12 02:09:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:02,799 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 302 transitions. [2023-11-12 02:09:02,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 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) [2023-11-12 02:09:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 302 transitions. [2023-11-12 02:09:02,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-12 02:09:02,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:02,801 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:02,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-12 02:09:03,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:09:03,028 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:09:03,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:03,029 INFO L85 PathProgramCache]: Analyzing trace with hash 233252627, now seen corresponding path program 2 times [2023-11-12 02:09:03,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:09:03,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485587002] [2023-11-12 02:09:03,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:09:03,030 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 [2023-11-12 02:09:03,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:09:03,031 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:09:03,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-12 02:09:03,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:09:03,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:09:03,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:09:03,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:03,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:09:03,313 INFO L351 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 [2023-11-12 02:09:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-12 02:09:03,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:03,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:09:03,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485587002] [2023-11-12 02:09:03,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485587002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:03,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:03,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:03,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992697786] [2023-11-12 02:09:03,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:03,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:09:03,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:09:03,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:09:03,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:09:03,882 INFO L87 Difference]: Start difference. First operand 272 states and 302 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-12 02:09:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:04,893 INFO L93 Difference]: Finished difference Result 288 states and 319 transitions. [2023-11-12 02:09:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:09:04,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) Word has length 47 [2023-11-12 02:09:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:04,896 INFO L225 Difference]: With dead ends: 288 [2023-11-12 02:09:04,896 INFO L226 Difference]: Without dead ends: 288 [2023-11-12 02:09:04,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:09:04,897 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 278 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:04,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 159 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 02:09:04,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-12 02:09:04,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 271. [2023-11-12 02:09:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 182 states have (on average 1.6318681318681318) internal successors, (297), 267 states have internal predecessors, (297), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:09:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 301 transitions. [2023-11-12 02:09:04,907 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 301 transitions. Word has length 47 [2023-11-12 02:09:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:04,907 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 301 transitions. [2023-11-12 02:09:04,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-12 02:09:04,907 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 301 transitions. [2023-11-12 02:09:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-12 02:09:04,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:04,909 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:04,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:05,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:09:05,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:09:05,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash -994347348, now seen corresponding path program 1 times [2023-11-12 02:09:05,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:09:05,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464243409] [2023-11-12 02:09:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:05,125 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 [2023-11-12 02:09:05,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:09:05,126 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:09:05,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-12 02:09:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:05,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:09:05,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:05,619 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:09:05,620 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-12 02:09:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-12 02:09:05,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:05,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:09:05,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464243409] [2023-11-12 02:09:05,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464243409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:05,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:05,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:05,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064623942] [2023-11-12 02:09:05,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:05,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:05,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:09:05,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:05,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:05,653 INFO L87 Difference]: Start difference. First operand 271 states and 301 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:09:06,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:06,573 INFO L93 Difference]: Finished difference Result 283 states and 314 transitions. [2023-11-12 02:09:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:06,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2023-11-12 02:09:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:06,577 INFO L225 Difference]: With dead ends: 283 [2023-11-12 02:09:06,577 INFO L226 Difference]: Without dead ends: 283 [2023-11-12 02:09:06,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:06,578 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 222 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:06,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 212 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:09:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-12 02:09:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 266. [2023-11-12 02:09:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 182 states have (on average 1.6043956043956045) internal successors, (292), 262 states have internal predecessors, (292), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:09:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 296 transitions. [2023-11-12 02:09:06,589 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 296 transitions. Word has length 55 [2023-11-12 02:09:06,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:06,591 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 296 transitions. [2023-11-12 02:09:06,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:09:06,591 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 296 transitions. [2023-11-12 02:09:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-12 02:09:06,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:06,594 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:06,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-12 02:09:06,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:09:06,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:09:06,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:06,797 INFO L85 PathProgramCache]: Analyzing trace with hash -994347347, now seen corresponding path program 1 times [2023-11-12 02:09:06,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:09:06,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199325589] [2023-11-12 02:09:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:06,798 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 [2023-11-12 02:09:06,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:09:06,799 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:09:06,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-12 02:09:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:07,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:09:07,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:07,429 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-12 02:09:07,430 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2023-11-12 02:09:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-12 02:09:07,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:07,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:09:07,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199325589] [2023-11-12 02:09:07,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199325589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:07,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:07,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:09:07,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988568785] [2023-11-12 02:09:07,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:07,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:07,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:09:07,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:07,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:07,551 INFO L87 Difference]: Start difference. First operand 266 states and 296 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:09:10,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:10,271 INFO L93 Difference]: Finished difference Result 447 states and 505 transitions. [2023-11-12 02:09:10,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:09:10,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2023-11-12 02:09:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:10,275 INFO L225 Difference]: With dead ends: 447 [2023-11-12 02:09:10,275 INFO L226 Difference]: Without dead ends: 447 [2023-11-12 02:09:10,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:09:10,276 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 640 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:10,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 773 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-12 02:09:10,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-12 02:09:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 370. [2023-11-12 02:09:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 286 states have (on average 1.6993006993006994) internal successors, (486), 365 states have internal predecessors, (486), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 02:09:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 492 transitions. [2023-11-12 02:09:10,289 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 492 transitions. Word has length 55 [2023-11-12 02:09:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:10,289 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 492 transitions. [2023-11-12 02:09:10,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:09:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 492 transitions. [2023-11-12 02:09:10,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-12 02:09:10,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:10,290 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:10,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:10,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:09:10,509 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:09:10,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash -212391582, now seen corresponding path program 1 times [2023-11-12 02:09:10,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:09:10,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411002986] [2023-11-12 02:09:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:10,511 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 [2023-11-12 02:09:10,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:09:10,512 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:09:10,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-12 02:09:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:11,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:09:11,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:11,233 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-12 02:09:11,233 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2023-11-12 02:09:11,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:09:11,739 INFO L322 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-11-12 02:09:11,739 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 31 [2023-11-12 02:09:11,772 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:09:11,773 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 02:09:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-12 02:09:11,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:11,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:09:11,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411002986] [2023-11-12 02:09:11,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411002986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:11,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:11,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:09:11,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935712431] [2023-11-12 02:09:11,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:11,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:09:11,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:09:11,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:09:11,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:09:11,964 INFO L87 Difference]: Start difference. First operand 370 states and 492 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:09:18,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:18,028 INFO L93 Difference]: Finished difference Result 304 states and 336 transitions. [2023-11-12 02:09:18,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:09:18,029 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-11-12 02:09:18,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:18,031 INFO L225 Difference]: With dead ends: 304 [2023-11-12 02:09:18,031 INFO L226 Difference]: Without dead ends: 304 [2023-11-12 02:09:18,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:09:18,032 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 799 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:18,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 638 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-12 02:09:18,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-12 02:09:18,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 279. [2023-11-12 02:09:18,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 197 states have (on average 1.583756345177665) internal successors, (312), 275 states have internal predecessors, (312), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:09:18,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 316 transitions. [2023-11-12 02:09:18,041 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 316 transitions. Word has length 58 [2023-11-12 02:09:18,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:18,041 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 316 transitions. [2023-11-12 02:09:18,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:09:18,042 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 316 transitions. [2023-11-12 02:09:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-12 02:09:18,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:18,043 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:18,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:18,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:09:18,256 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:09:18,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:18,257 INFO L85 PathProgramCache]: Analyzing trace with hash -870798278, now seen corresponding path program 1 times [2023-11-12 02:09:18,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:09:18,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779778287] [2023-11-12 02:09:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:18,257 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 [2023-11-12 02:09:18,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:09:18,258 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:09:18,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-12 02:09:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:18,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:09:18,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:18,893 INFO L351 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 [2023-11-12 02:09:18,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:09:18,905 INFO L351 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 [2023-11-12 02:09:18,935 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:09:18,936 INFO L351 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 [2023-11-12 02:09:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-12 02:09:18,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:18,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:09:18,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779778287] [2023-11-12 02:09:18,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779778287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:18,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:18,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:18,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588733261] [2023-11-12 02:09:18,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:18,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:18,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:09:18,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:18,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:18,969 INFO L87 Difference]: Start difference. First operand 279 states and 316 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:09:19,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:19,445 INFO L93 Difference]: Finished difference Result 287 states and 324 transitions. [2023-11-12 02:09:19,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:19,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-11-12 02:09:19,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:19,447 INFO L225 Difference]: With dead ends: 287 [2023-11-12 02:09:19,447 INFO L226 Difference]: Without dead ends: 287 [2023-11-12 02:09:19,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:19,448 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 213 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:19,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 208 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:09:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-12 02:09:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 284. [2023-11-12 02:09:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 203 states have (on average 1.5763546798029557) internal successors, (320), 280 states have internal predecessors, (320), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:09:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 324 transitions. [2023-11-12 02:09:19,458 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 324 transitions. Word has length 61 [2023-11-12 02:09:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:19,458 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 324 transitions. [2023-11-12 02:09:19,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:09:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 324 transitions. [2023-11-12 02:09:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-12 02:09:19,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:19,459 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:19,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:19,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:09:19,672 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:09:19,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:19,673 INFO L85 PathProgramCache]: Analyzing trace with hash -870798277, now seen corresponding path program 1 times [2023-11-12 02:09:19,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:09:19,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494267608] [2023-11-12 02:09:19,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:19,674 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 [2023-11-12 02:09:19,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:09:19,675 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:09:19,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 (14)] Waiting until timeout for monitored process [2023-11-12 02:09:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:20,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:09:20,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:20,290 INFO L351 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 16 treesize of output 10 [2023-11-12 02:09:20,314 INFO L351 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 [2023-11-12 02:09:20,323 INFO L351 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 11 treesize of output 10 [2023-11-12 02:09:20,343 INFO L351 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 [2023-11-12 02:09:20,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:09:20,639 INFO L351 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 19 treesize of output 14 [2023-11-12 02:09:20,663 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:09:20,664 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 02:09:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-12 02:09:20,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:20,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:09:20,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494267608] [2023-11-12 02:09:20,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494267608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:20,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:20,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:09:20,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624669099] [2023-11-12 02:09:20,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:20,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:09:20,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:09:20,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:09:20,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:09:20,854 INFO L87 Difference]: Start difference. First operand 284 states and 324 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:09:24,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:24,712 INFO L93 Difference]: Finished difference Result 298 states and 330 transitions. [2023-11-12 02:09:24,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:09:24,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-11-12 02:09:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:24,714 INFO L225 Difference]: With dead ends: 298 [2023-11-12 02:09:24,715 INFO L226 Difference]: Without dead ends: 298 [2023-11-12 02:09:24,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:09:24,716 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 549 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:24,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 551 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-12 02:09:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-12 02:09:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 284. [2023-11-12 02:09:24,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 203 states have (on average 1.5665024630541873) internal successors, (318), 280 states have internal predecessors, (318), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:09:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 322 transitions. [2023-11-12 02:09:24,725 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 322 transitions. Word has length 61 [2023-11-12 02:09:24,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:24,725 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 322 transitions. [2023-11-12 02:09:24,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:09:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 322 transitions. [2023-11-12 02:09:24,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-12 02:09:24,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:24,727 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:24,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 (14)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:24,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:09:24,940 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:09:24,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:24,941 INFO L85 PathProgramCache]: Analyzing trace with hash -349001240, now seen corresponding path program 1 times [2023-11-12 02:09:24,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:09:24,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098115724] [2023-11-12 02:09:24,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:24,942 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 [2023-11-12 02:09:24,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:09:24,944 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:09:24,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 (15)] Waiting until timeout for monitored process [2023-11-12 02:09:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:25,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:09:25,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:25,605 INFO L351 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 [2023-11-12 02:09:25,642 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-12 02:09:25,808 INFO L322 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-12 02:09:25,809 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 28 [2023-11-12 02:09:25,925 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-12 02:09:25,925 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 14 [2023-11-12 02:09:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-12 02:09:25,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:25,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:09:25,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098115724] [2023-11-12 02:09:25,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098115724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:25,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:25,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:09:25,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144609618] [2023-11-12 02:09:25,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:25,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:09:25,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:09:25,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:09:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:09:25,956 INFO L87 Difference]: Start difference. First operand 284 states and 322 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:09:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:27,963 INFO L93 Difference]: Finished difference Result 282 states and 319 transitions. [2023-11-12 02:09:27,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:09:27,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2023-11-12 02:09:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:27,965 INFO L225 Difference]: With dead ends: 282 [2023-11-12 02:09:27,966 INFO L226 Difference]: Without dead ends: 282 [2023-11-12 02:09:27,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:09:27,966 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 237 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:27,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 719 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-12 02:09:27,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-12 02:09:27,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2023-11-12 02:09:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 203 states have (on average 1.5517241379310345) internal successors, (315), 278 states have internal predecessors, (315), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:09:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 319 transitions. [2023-11-12 02:09:27,977 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 319 transitions. Word has length 64 [2023-11-12 02:09:27,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:27,978 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 319 transitions. [2023-11-12 02:09:27,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:09:27,979 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 319 transitions. [2023-11-12 02:09:27,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-12 02:09:27,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:27,979 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:28,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 (15)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:28,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:09:28,199 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2023-11-12 02:09:28,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:28,200 INFO L85 PathProgramCache]: Analyzing trace with hash -349001239, now seen corresponding path program 1 times [2023-11-12 02:09:28,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:09:28,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095332647] [2023-11-12 02:09:28,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:28,201 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 [2023-11-12 02:09:28,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:09:28,202 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:09:28,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ae1f380-5f98-4c74-be6a-47e02e265872/bin/uautomizer-verify-uTZkv6EMXl/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 (16)] Waiting until timeout for monitored process [2023-11-12 02:09:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:28,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 02:09:28,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:28,881 INFO L351 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 10 treesize of output 8 [2023-11-12 02:09:28,913 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:09:28,960 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 12 [2023-11-12 02:09:28,988 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 1 [2023-11-12 02:09:29,102 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2023-11-12 02:09:29,107 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-12 02:09:29,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2023-11-12 02:09:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-12 02:09:29,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:29,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:09:29,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095332647] [2023-11-12 02:09:29,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095332647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:29,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:29,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:09:29,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75972681] [2023-11-12 02:09:29,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:29,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:09:29,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:09:29,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:09:29,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:09:29,225 INFO L87 Difference]: Start difference. First operand 282 states and 319 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)