./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:48:18,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:48:18,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:48:18,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:48:18,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:48:18,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:48:18,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:48:18,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:48:18,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:48:18,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:48:18,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:48:18,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:48:18,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:48:18,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:48:18,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:48:18,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:48:18,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:48:18,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:48:18,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:48:18,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:48:18,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:48:18,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:48:18,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:48:18,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:48:18,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:48:18,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:48:18,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:48:18,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:48:18,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:48:18,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:48:18,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:48:18,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:48:18,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:48:18,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:48:18,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:48:18,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:48:18,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:48:18,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:48:18,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:48:18,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:48:18,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:48:18,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 18:48:18,982 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:48:18,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:48:18,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:48:18,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:48:18,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:48:18,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:48:18,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:48:18,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:48:18,984 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:48:18,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:48:18,985 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:48:18,985 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:48:18,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:48:18,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:48:18,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:48:18,985 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 18:48:18,986 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 18:48:18,986 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 18:48:18,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:48:18,986 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 18:48:18,986 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:48:18,987 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:48:18,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:48:18,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:48:18,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:48:18,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:48:18,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:48:18,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:48:18,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:48:18,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:48:18,988 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:48:18,988 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:48:18,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:48:18,988 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:48:18,988 INFO L138 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_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 [2022-12-13 18:48:19,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:48:19,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:48:19,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:48:19,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:48:19,175 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:48:19,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2022-12-13 18:48:21,730 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:48:21,889 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:48:21,890 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2022-12-13 18:48:21,894 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/data/7686b7786/b17e2cf877b9475d8134862c75224d8f/FLAG2b62226aa [2022-12-13 18:48:21,905 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/data/7686b7786/b17e2cf877b9475d8134862c75224d8f [2022-12-13 18:48:21,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:48:21,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:48:21,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:48:21,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:48:21,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:48:21,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:48:21" (1/1) ... [2022-12-13 18:48:21,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a5a274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:21, skipping insertion in model container [2022-12-13 18:48:21,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:48:21" (1/1) ... [2022-12-13 18:48:21,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:48:21,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:48:22,078 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2022-12-13 18:48:22,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:48:22,112 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:48:22,125 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2022-12-13 18:48:22,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:48:22,150 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:48:22,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22 WrapperNode [2022-12-13 18:48:22,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:48:22,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:48:22,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:48:22,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:48:22,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22" (1/1) ... [2022-12-13 18:48:22,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22" (1/1) ... [2022-12-13 18:48:22,188 INFO L138 Inliner]: procedures = 18, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 158 [2022-12-13 18:48:22,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:48:22,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:48:22,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:48:22,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:48:22,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22" (1/1) ... [2022-12-13 18:48:22,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22" (1/1) ... [2022-12-13 18:48:22,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22" (1/1) ... [2022-12-13 18:48:22,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22" (1/1) ... [2022-12-13 18:48:22,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22" (1/1) ... [2022-12-13 18:48:22,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22" (1/1) ... [2022-12-13 18:48:22,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22" (1/1) ... [2022-12-13 18:48:22,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22" (1/1) ... [2022-12-13 18:48:22,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:48:22,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:48:22,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:48:22,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:48:22,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22" (1/1) ... [2022-12-13 18:48:22,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:48:22,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:48:22,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:48:22,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:48:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:48:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:48:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:48:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:48:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:48:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:48:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:48:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 18:48:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 18:48:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:48:22,344 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:48:22,346 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:48:22,585 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:48:22,592 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:48:22,592 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 18:48:22,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:48:22 BoogieIcfgContainer [2022-12-13 18:48:22,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:48:22,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:48:22,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:48:22,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:48:22,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:48:21" (1/3) ... [2022-12-13 18:48:22,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ebce8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:48:22, skipping insertion in model container [2022-12-13 18:48:22,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:22" (2/3) ... [2022-12-13 18:48:22,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ebce8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:48:22, skipping insertion in model container [2022-12-13 18:48:22,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:48:22" (3/3) ... [2022-12-13 18:48:22,603 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2022-12-13 18:48:22,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:48:22,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-12-13 18:48:22,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:48:22,662 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;@5ce48538, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:48:22,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-12-13 18:48:22,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 85 states have internal predecessors, (108), 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) [2022-12-13 18:48:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-13 18:48:22,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:22,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-13 18:48:22,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:48:22,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:22,674 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-12-13 18:48:22,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:22,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653909616] [2022-12-13 18:48:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:22,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:22,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:22,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653909616] [2022-12-13 18:48:22,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653909616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:22,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:22,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:48:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875959950] [2022-12-13 18:48:22,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:22,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:48:22,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:22,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:48:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:48:22,885 INFO L87 Difference]: Start difference. First operand has 90 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 85 states have internal predecessors, (108), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-13 18:48:22,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:22,970 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2022-12-13 18:48:22,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:48:22,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-12-13 18:48:22,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:22,978 INFO L225 Difference]: With dead ends: 83 [2022-12-13 18:48:22,978 INFO L226 Difference]: Without dead ends: 81 [2022-12-13 18:48:22,979 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 [2022-12-13 18:48:22,982 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 77 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:22,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 74 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:48:22,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-13 18:48:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-12-13 18:48:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.5172413793103448) internal successors, (88), 76 states have internal predecessors, (88), 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) [2022-12-13 18:48:23,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2022-12-13 18:48:23,016 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 4 [2022-12-13 18:48:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:23,016 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2022-12-13 18:48:23,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-13 18:48:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2022-12-13 18:48:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-13 18:48:23,017 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:23,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-13 18:48:23,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:48:23,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:48:23,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:23,019 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-12-13 18:48:23,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:23,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816481544] [2022-12-13 18:48:23,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:23,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:23,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:23,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816481544] [2022-12-13 18:48:23,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816481544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:23,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:23,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:48:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616137535] [2022-12-13 18:48:23,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:23,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:48:23,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:48:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:48:23,099 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-13 18:48:23,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:23,167 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2022-12-13 18:48:23,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:48:23,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-12-13 18:48:23,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:23,168 INFO L225 Difference]: With dead ends: 85 [2022-12-13 18:48:23,168 INFO L226 Difference]: Without dead ends: 85 [2022-12-13 18:48:23,169 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 [2022-12-13 18:48:23,170 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 2 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:23,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 140 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:48:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-12-13 18:48:23,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2022-12-13 18:48:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 60 states have (on average 1.5) internal successors, (90), 78 states have internal predecessors, (90), 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) [2022-12-13 18:48:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2022-12-13 18:48:23,176 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 4 [2022-12-13 18:48:23,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:23,176 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2022-12-13 18:48:23,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-13 18:48:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2022-12-13 18:48:23,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 18:48:23,177 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:23,177 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:23,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:48:23,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:48:23,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:23,178 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2022-12-13 18:48:23,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:23,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432118489] [2022-12-13 18:48:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:23,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:23,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:23,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432118489] [2022-12-13 18:48:23,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432118489] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:48:23,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849887075] [2022-12-13 18:48:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:23,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:48:23,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:48:23,297 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:48:23,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:48:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:23,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:48:23,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:48:23,388 INFO L350 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 [2022-12-13 18:48:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:23,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:48:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:23,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849887075] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:48:23,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:48:23,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-12-13 18:48:23,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444916490] [2022-12-13 18:48:23,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:48:23,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:48:23,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:23,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:48:23,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:48:23,506 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-12-13 18:48:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:23,940 INFO L93 Difference]: Finished difference Result 326 states and 392 transitions. [2022-12-13 18:48:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:48:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 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 8 [2022-12-13 18:48:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:23,945 INFO L225 Difference]: With dead ends: 326 [2022-12-13 18:48:23,945 INFO L226 Difference]: Without dead ends: 326 [2022-12-13 18:48:23,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:48:23,947 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 497 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:23,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 429 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:48:23,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-12-13 18:48:23,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 174. [2022-12-13 18:48:23,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 143 states have (on average 1.4335664335664335) internal successors, (205), 160 states have internal predecessors, (205), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 18:48:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2022-12-13 18:48:23,959 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 8 [2022-12-13 18:48:23,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:23,959 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2022-12-13 18:48:23,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-12-13 18:48:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2022-12-13 18:48:23,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 18:48:23,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:23,960 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:23,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:48:24,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 18:48:24,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:48:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1143818169, now seen corresponding path program 1 times [2022-12-13 18:48:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:24,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921851832] [2022-12-13 18:48:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:24,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 18:48:24,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:24,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921851832] [2022-12-13 18:48:24,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921851832] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:24,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:24,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:48:24,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777366836] [2022-12-13 18:48:24,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:24,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:48:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:24,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:48:24,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:48:24,331 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-13 18:48:24,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:24,361 INFO L93 Difference]: Finished difference Result 171 states and 226 transitions. [2022-12-13 18:48:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:48:24,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 24 [2022-12-13 18:48:24,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:24,364 INFO L225 Difference]: With dead ends: 171 [2022-12-13 18:48:24,364 INFO L226 Difference]: Without dead ends: 171 [2022-12-13 18:48:24,364 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 [2022-12-13 18:48:24,365 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 56 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:24,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 96 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:24,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-12-13 18:48:24,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-12-13 18:48:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 143 states have (on average 1.4125874125874125) internal successors, (202), 157 states have internal predecessors, (202), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 18:48:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2022-12-13 18:48:24,374 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 24 [2022-12-13 18:48:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:24,374 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2022-12-13 18:48:24,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-13 18:48:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2022-12-13 18:48:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 18:48:24,375 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:24,375 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:24,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:48:24,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:48:24,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:24,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1143818170, now seen corresponding path program 1 times [2022-12-13 18:48:24,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:24,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59928045] [2022-12-13 18:48:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:24,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:24,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:24,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59928045] [2022-12-13 18:48:24,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59928045] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:48:24,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144616361] [2022-12-13 18:48:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:24,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:48:24,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:48:24,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:48:24,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:48:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:24,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:48:24,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:48:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:24,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:48:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:24,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144616361] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:48:24,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:48:24,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 18:48:24,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025681259] [2022-12-13 18:48:24,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:48:24,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:48:24,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:24,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:48:24,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:48:24,580 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 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) [2022-12-13 18:48:24,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:24,918 INFO L93 Difference]: Finished difference Result 784 states and 948 transitions. [2022-12-13 18:48:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:48:24,919 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 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 24 [2022-12-13 18:48:24,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:24,921 INFO L225 Difference]: With dead ends: 784 [2022-12-13 18:48:24,921 INFO L226 Difference]: Without dead ends: 784 [2022-12-13 18:48:24,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:48:24,922 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 1678 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:24,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 770 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:48:24,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-12-13 18:48:24,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 195. [2022-12-13 18:48:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 167 states have (on average 1.3532934131736527) internal successors, (226), 181 states have internal predecessors, (226), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 18:48:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 250 transitions. [2022-12-13 18:48:24,933 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 250 transitions. Word has length 24 [2022-12-13 18:48:24,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:24,933 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 250 transitions. [2022-12-13 18:48:24,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 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) [2022-12-13 18:48:24,934 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 250 transitions. [2022-12-13 18:48:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 18:48:24,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:24,934 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:24,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:48:25,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:48:25,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:48:25,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1405730636, now seen corresponding path program 2 times [2022-12-13 18:48:25,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:25,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307947077] [2022-12-13 18:48:25,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:25,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:25,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:25,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307947077] [2022-12-13 18:48:25,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307947077] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:48:25,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163814132] [2022-12-13 18:48:25,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:48:25,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:48:25,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:48:25,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:48:25,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:48:25,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 18:48:25,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:48:25,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:48:25,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:48:25,399 INFO L350 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 [2022-12-13 18:48:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-13 18:48:25,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:48:25,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163814132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:25,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:48:25,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 14 [2022-12-13 18:48:25,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215771794] [2022-12-13 18:48:25,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:25,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:48:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:48:25,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:48:25,418 INFO L87 Difference]: Start difference. First operand 195 states and 250 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-13 18:48:25,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:25,454 INFO L93 Difference]: Finished difference Result 199 states and 254 transitions. [2022-12-13 18:48:25,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:48:25,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 48 [2022-12-13 18:48:25,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:25,456 INFO L225 Difference]: With dead ends: 199 [2022-12-13 18:48:25,456 INFO L226 Difference]: Without dead ends: 199 [2022-12-13 18:48:25,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:48:25,457 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 2 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:25,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 143 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:25,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-12-13 18:48:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2022-12-13 18:48:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 169 states have (on average 1.349112426035503) internal successors, (228), 183 states have internal predecessors, (228), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 18:48:25,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 252 transitions. [2022-12-13 18:48:25,466 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 252 transitions. Word has length 48 [2022-12-13 18:48:25,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:25,466 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 252 transitions. [2022-12-13 18:48:25,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-13 18:48:25,467 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 252 transitions. [2022-12-13 18:48:25,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 18:48:25,467 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:25,468 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:25,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:48:25,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:48:25,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:48:25,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:25,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1405772122, now seen corresponding path program 1 times [2022-12-13 18:48:25,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:25,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274032150] [2022-12-13 18:48:25,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:25,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-13 18:48:25,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:25,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274032150] [2022-12-13 18:48:25,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274032150] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:25,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:25,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:48:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152564511] [2022-12-13 18:48:25,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:25,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:48:25,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:25,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:48:25,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:48:25,851 INFO L87 Difference]: Start difference. First operand 197 states and 252 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-12-13 18:48:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:25,886 INFO L93 Difference]: Finished difference Result 190 states and 231 transitions. [2022-12-13 18:48:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:48:25,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 48 [2022-12-13 18:48:25,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:25,888 INFO L225 Difference]: With dead ends: 190 [2022-12-13 18:48:25,888 INFO L226 Difference]: Without dead ends: 190 [2022-12-13 18:48:25,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:48:25,889 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 41 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:25,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 165 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:25,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-12-13 18:48:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 176. [2022-12-13 18:48:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 154 states have (on average 1.3311688311688312) internal successors, (205), 166 states have internal predecessors, (205), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 18:48:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 221 transitions. [2022-12-13 18:48:25,896 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 221 transitions. Word has length 48 [2022-12-13 18:48:25,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:25,896 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 221 transitions. [2022-12-13 18:48:25,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-12-13 18:48:25,897 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 221 transitions. [2022-12-13 18:48:25,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 18:48:25,897 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:25,897 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:25,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:48:25,897 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:48:25,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:25,898 INFO L85 PathProgramCache]: Analyzing trace with hash -821816881, now seen corresponding path program 1 times [2022-12-13 18:48:25,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:25,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380124569] [2022-12-13 18:48:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:25,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:26,093 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:48:26,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:26,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380124569] [2022-12-13 18:48:26,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380124569] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:48:26,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65782994] [2022-12-13 18:48:26,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:26,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:48:26,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:48:26,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:48:26,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:48:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:26,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 18:48:26,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:48:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:48:26,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:48:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:48:26,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65782994] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:48:26,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:48:26,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-12-13 18:48:26,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549367766] [2022-12-13 18:48:26,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:48:26,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 18:48:26,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:26,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 18:48:26,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 18:48:26,403 INFO L87 Difference]: Start difference. First operand 176 states and 221 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 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) [2022-12-13 18:48:26,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:26,934 INFO L93 Difference]: Finished difference Result 1272 states and 1525 transitions. [2022-12-13 18:48:26,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 18:48:26,935 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 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 52 [2022-12-13 18:48:26,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:26,939 INFO L225 Difference]: With dead ends: 1272 [2022-12-13 18:48:26,939 INFO L226 Difference]: Without dead ends: 1272 [2022-12-13 18:48:26,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 18:48:26,940 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 2206 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2250 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:26,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2250 Valid, 1121 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:48:26,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-12-13 18:48:26,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 224. [2022-12-13 18:48:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 202 states have (on average 1.2524752475247525) internal successors, (253), 214 states have internal predecessors, (253), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 18:48:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 269 transitions. [2022-12-13 18:48:26,958 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 269 transitions. Word has length 52 [2022-12-13 18:48:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:26,959 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 269 transitions. [2022-12-13 18:48:26,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 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) [2022-12-13 18:48:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 269 transitions. [2022-12-13 18:48:26,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 18:48:26,961 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:26,961 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:26,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:48:27,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:48:27,163 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:48:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:27,164 INFO L85 PathProgramCache]: Analyzing trace with hash -587166477, now seen corresponding path program 2 times [2022-12-13 18:48:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:27,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909238372] [2022-12-13 18:48:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:27,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:48:27,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:27,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909238372] [2022-12-13 18:48:27,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909238372] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:48:27,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302035954] [2022-12-13 18:48:27,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:48:27,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:48:27,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:48:27,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:48:27,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:48:27,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:48:27,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:48:27,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 18:48:27,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:48:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:48:27,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:48:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:48:28,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302035954] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:48:28,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:48:28,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-12-13 18:48:28,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756015598] [2022-12-13 18:48:28,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:48:28,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 18:48:28,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:28,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 18:48:28,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 18:48:28,406 INFO L87 Difference]: Start difference. First operand 224 states and 269 transitions. Second operand has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 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) [2022-12-13 18:48:30,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:30,209 INFO L93 Difference]: Finished difference Result 2592 states and 3109 transitions. [2022-12-13 18:48:30,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 18:48:30,210 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 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 100 [2022-12-13 18:48:30,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:30,216 INFO L225 Difference]: With dead ends: 2592 [2022-12-13 18:48:30,216 INFO L226 Difference]: Without dead ends: 2592 [2022-12-13 18:48:30,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 18:48:30,217 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 5775 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5867 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:30,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5867 Valid, 2230 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 18:48:30,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2022-12-13 18:48:30,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 320. [2022-12-13 18:48:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 298 states have (on average 1.1711409395973154) internal successors, (349), 310 states have internal predecessors, (349), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 18:48:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 365 transitions. [2022-12-13 18:48:30,239 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 365 transitions. Word has length 100 [2022-12-13 18:48:30,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:30,240 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 365 transitions. [2022-12-13 18:48:30,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 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) [2022-12-13 18:48:30,240 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 365 transitions. [2022-12-13 18:48:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-12-13 18:48:30,242 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:30,242 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:30,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:48:30,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 18:48:30,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:48:30,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1995408581, now seen corresponding path program 3 times [2022-12-13 18:48:30,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:30,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055762143] [2022-12-13 18:48:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:30,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:48:31,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:31,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055762143] [2022-12-13 18:48:31,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055762143] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:48:31,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439440532] [2022-12-13 18:48:31,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:48:31,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:48:31,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:48:31,893 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:48:31,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:48:31,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 18:48:31,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:48:31,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:48:31,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:48:31,989 INFO L350 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 [2022-12-13 18:48:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2022-12-13 18:48:32,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:48:32,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439440532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:32,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:48:32,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [49] total 52 [2022-12-13 18:48:32,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813784837] [2022-12-13 18:48:32,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:32,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:48:32,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:48:32,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 18:48:32,082 INFO L87 Difference]: Start difference. First operand 320 states and 365 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-13 18:48:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:32,140 INFO L93 Difference]: Finished difference Result 382 states and 447 transitions. [2022-12-13 18:48:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:48:32,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 196 [2022-12-13 18:48:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:32,143 INFO L225 Difference]: With dead ends: 382 [2022-12-13 18:48:32,143 INFO L226 Difference]: Without dead ends: 382 [2022-12-13 18:48:32,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 18:48:32,144 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 134 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:32,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 123 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:48:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-12-13 18:48:32,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 329. [2022-12-13 18:48:32,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 308 states have (on average 1.1785714285714286) internal successors, (363), 319 states have internal predecessors, (363), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 18:48:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 379 transitions. [2022-12-13 18:48:32,153 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 379 transitions. Word has length 196 [2022-12-13 18:48:32,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:32,153 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 379 transitions. [2022-12-13 18:48:32,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-13 18:48:32,153 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 379 transitions. [2022-12-13 18:48:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-12-13 18:48:32,156 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:32,156 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:32,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:48:32,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 18:48:32,357 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:48:32,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:32,357 INFO L85 PathProgramCache]: Analyzing trace with hash -2032282617, now seen corresponding path program 1 times [2022-12-13 18:48:32,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:32,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091198382] [2022-12-13 18:48:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:32,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2022-12-13 18:48:32,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:32,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091198382] [2022-12-13 18:48:32,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091198382] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:48:32,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833405691] [2022-12-13 18:48:32,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:32,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:48:32,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:48:32,506 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:48:32,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:48:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:32,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 18:48:32,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:48:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:48:33,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:48:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:48:35,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833405691] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:48:35,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:48:35,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 49, 49] total 98 [2022-12-13 18:48:35,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150239133] [2022-12-13 18:48:35,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:48:35,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-12-13 18:48:35,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:35,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-12-13 18:48:35,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4565, Invalid=4941, Unknown=0, NotChecked=0, Total=9506 [2022-12-13 18:48:35,089 INFO L87 Difference]: Start difference. First operand 329 states and 379 transitions. Second operand has 98 states, 98 states have (on average 4.061224489795919) internal successors, (398), 98 states have internal predecessors, (398), 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) [2022-12-13 18:49:17,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:49:17,738 INFO L93 Difference]: Finished difference Result 9431 states and 11520 transitions. [2022-12-13 18:49:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2022-12-13 18:49:17,739 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.061224489795919) internal successors, (398), 98 states have internal predecessors, (398), 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 198 [2022-12-13 18:49:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:49:17,755 INFO L225 Difference]: With dead ends: 9431 [2022-12-13 18:49:17,755 INFO L226 Difference]: Without dead ends: 9431 [2022-12-13 18:49:17,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19742 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=27360, Invalid=54150, Unknown=0, NotChecked=0, Total=81510 [2022-12-13 18:49:17,765 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 30869 mSDsluCounter, 4259 mSDsCounter, 0 mSdLazyCounter, 3447 mSolverCounterSat, 3571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31059 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 7018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3571 IncrementalHoareTripleChecker+Valid, 3447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:49:17,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31059 Valid, 4703 Invalid, 7018 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3571 Valid, 3447 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 18:49:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9431 states. [2022-12-13 18:49:17,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9431 to 571. [2022-12-13 18:49:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 546 states have (on average 1.13003663003663) internal successors, (617), 557 states have internal predecessors, (617), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 18:49:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 641 transitions. [2022-12-13 18:49:17,835 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 641 transitions. Word has length 198 [2022-12-13 18:49:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:49:17,835 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 641 transitions. [2022-12-13 18:49:17,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.061224489795919) internal successors, (398), 98 states have internal predecessors, (398), 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) [2022-12-13 18:49:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 641 transitions. [2022-12-13 18:49:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-12-13 18:49:17,839 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:49:17,839 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:49:17,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 18:49:18,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:49:18,042 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:49:18,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:18,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1572474150, now seen corresponding path program 2 times [2022-12-13 18:49:18,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:18,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580106660] [2022-12-13 18:49:18,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:18,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17579 trivial. 0 not checked. [2022-12-13 18:49:18,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:49:18,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580106660] [2022-12-13 18:49:18,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580106660] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:49:18,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226043531] [2022-12-13 18:49:18,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:49:18,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:49:18,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:49:18,445 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:49:18,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:49:18,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 18:49:18,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:49:18,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:49:18,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:49:18,576 INFO L350 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 [2022-12-13 18:49:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2022-12-13 18:49:18,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:49:18,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226043531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:49:18,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:49:18,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-13 18:49:18,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2505663] [2022-12-13 18:49:18,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:49:18,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:49:18,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:49:18,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:49:18,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:49:18,625 INFO L87 Difference]: Start difference. First operand 571 states and 641 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-12-13 18:49:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:49:18,665 INFO L93 Difference]: Finished difference Result 575 states and 639 transitions. [2022-12-13 18:49:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:49:18,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 394 [2022-12-13 18:49:18,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:49:18,668 INFO L225 Difference]: With dead ends: 575 [2022-12-13 18:49:18,668 INFO L226 Difference]: Without dead ends: 575 [2022-12-13 18:49:18,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 392 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:49:18,669 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 85 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:49:18,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 112 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:49:18,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-12-13 18:49:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 569. [2022-12-13 18:49:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 546 states have (on average 1.1263736263736264) internal successors, (615), 555 states have internal predecessors, (615), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 18:49:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 639 transitions. [2022-12-13 18:49:18,679 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 639 transitions. Word has length 394 [2022-12-13 18:49:18,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:49:18,680 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 639 transitions. [2022-12-13 18:49:18,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-12-13 18:49:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 639 transitions. [2022-12-13 18:49:18,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-12-13 18:49:18,687 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:49:18,687 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:49:18,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 18:49:18,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 18:49:18,888 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:49:18,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:18,888 INFO L85 PathProgramCache]: Analyzing trace with hash -369081090, now seen corresponding path program 1 times [2022-12-13 18:49:18,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:18,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724622005] [2022-12-13 18:49:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:18,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2022-12-13 18:49:19,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:49:19,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724622005] [2022-12-13 18:49:19,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724622005] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:49:19,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:49:19,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:49:19,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91996966] [2022-12-13 18:49:19,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:49:19,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:49:19,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:49:19,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:49:19,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:49:19,339 INFO L87 Difference]: Start difference. First operand 569 states and 639 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-12-13 18:49:19,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:49:19,363 INFO L93 Difference]: Finished difference Result 656 states and 751 transitions. [2022-12-13 18:49:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:49:19,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 397 [2022-12-13 18:49:19,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:49:19,365 INFO L225 Difference]: With dead ends: 656 [2022-12-13 18:49:19,365 INFO L226 Difference]: Without dead ends: 656 [2022-12-13 18:49:19,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:49:19,366 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 72 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:49:19,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 196 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:49:19,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-12-13 18:49:19,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 563. [2022-12-13 18:49:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 540 states have (on average 1.112962962962963) internal successors, (601), 549 states have internal predecessors, (601), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 18:49:19,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 625 transitions. [2022-12-13 18:49:19,372 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 625 transitions. Word has length 397 [2022-12-13 18:49:19,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:49:19,373 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 625 transitions. [2022-12-13 18:49:19,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-12-13 18:49:19,373 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 625 transitions. [2022-12-13 18:49:19,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-12-13 18:49:19,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:49:19,377 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:49:19,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:49:19,377 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:49:19,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1043534557, now seen corresponding path program 1 times [2022-12-13 18:49:19,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:19,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104488288] [2022-12-13 18:49:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:19,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2022-12-13 18:49:19,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:49:19,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104488288] [2022-12-13 18:49:19,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104488288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:49:19,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:49:19,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:49:19,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209062225] [2022-12-13 18:49:19,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:49:19,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:49:19,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:49:19,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:49:19,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:49:19,598 INFO L87 Difference]: Start difference. First operand 563 states and 625 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-12-13 18:49:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:49:19,606 INFO L93 Difference]: Finished difference Result 418 states and 420 transitions. [2022-12-13 18:49:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:49:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 402 [2022-12-13 18:49:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:49:19,607 INFO L225 Difference]: With dead ends: 418 [2022-12-13 18:49:19,607 INFO L226 Difference]: Without dead ends: 418 [2022-12-13 18:49:19,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:49:19,608 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 12 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:49:19,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 82 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:49:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-12-13 18:49:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2022-12-13 18:49:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.0071942446043165) internal successors, (420), 417 states have internal predecessors, (420), 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) [2022-12-13 18:49:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 420 transitions. [2022-12-13 18:49:19,613 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 420 transitions. Word has length 402 [2022-12-13 18:49:19,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:49:19,613 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 420 transitions. [2022-12-13 18:49:19,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-12-13 18:49:19,613 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 420 transitions. [2022-12-13 18:49:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-12-13 18:49:19,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:49:19,617 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:49:19,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:49:19,618 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:49:19,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:19,618 INFO L85 PathProgramCache]: Analyzing trace with hash -831843759, now seen corresponding path program 1 times [2022-12-13 18:49:19,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:19,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374112118] [2022-12-13 18:49:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:19,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 17596 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 18:49:24,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:49:24,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374112118] [2022-12-13 18:49:24,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374112118] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:49:24,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306261411] [2022-12-13 18:49:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:24,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:49:24,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:49:24,385 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:49:24,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 18:49:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:24,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-13 18:49:24,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:49:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 17596 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 18:49:25,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:49:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17596 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 18:49:31,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306261411] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:49:31,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:49:31,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2022-12-13 18:49:31,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074443177] [2022-12-13 18:49:31,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:49:31,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2022-12-13 18:49:31,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:49:31,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2022-12-13 18:49:31,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-12-13 18:49:31,525 INFO L87 Difference]: Start difference. First operand 418 states and 420 transitions. Second operand has 193 states, 193 states have (on average 4.072538860103627) internal successors, (786), 193 states have internal predecessors, (786), 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) [2022-12-13 18:49:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:49:32,910 INFO L93 Difference]: Finished difference Result 802 states and 804 transitions. [2022-12-13 18:49:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-13 18:49:32,911 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 4.072538860103627) internal successors, (786), 193 states have internal predecessors, (786), 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 417 [2022-12-13 18:49:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:49:32,913 INFO L225 Difference]: With dead ends: 802 [2022-12-13 18:49:32,913 INFO L226 Difference]: Without dead ends: 802 [2022-12-13 18:49:32,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-12-13 18:49:32,916 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:49:32,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 224 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:49:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-12-13 18:49:32,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2022-12-13 18:49:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 1.00374531835206) internal successors, (804), 801 states have internal predecessors, (804), 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) [2022-12-13 18:49:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 804 transitions. [2022-12-13 18:49:32,926 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 804 transitions. Word has length 417 [2022-12-13 18:49:32,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:49:32,927 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 804 transitions. [2022-12-13 18:49:32,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 4.072538860103627) internal successors, (786), 193 states have internal predecessors, (786), 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) [2022-12-13 18:49:32,928 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 804 transitions. [2022-12-13 18:49:32,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2022-12-13 18:49:32,948 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:49:32,948 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:49:32,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 18:49:33,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:49:33,149 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-12-13 18:49:33,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:33,150 INFO L85 PathProgramCache]: Analyzing trace with hash 633875761, now seen corresponding path program 2 times [2022-12-13 18:49:33,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:33,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130955404] [2022-12-13 18:49:33,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:33,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 72028 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 18:49:55,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:49:55,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130955404] [2022-12-13 18:49:55,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130955404] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:49:55,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455779497] [2022-12-13 18:49:55,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:49:55,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:49:55,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:49:55,198 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:49:55,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 18:49:55,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 18:49:55,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:49:55,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 18:49:55,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:49:58,127 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2628 Int) (|v_ULTIMATE.start_main_~#values~0#1.base_25| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_34| Int) (v_ArrVal_2627 Int)) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#set~0#1.base_34| v_ArrVal_2627))) (and (= |c_#valid| (store (store (store .cse0 |v_ULTIMATE.start_main_~#values~0#1.base_25| v_ArrVal_2628) |v_ULTIMATE.start_main_~#set~0#1.base_34| 0) |v_ULTIMATE.start_main_~#values~0#1.base_25| 0)) (= (select .cse0 |v_ULTIMATE.start_main_~#values~0#1.base_25|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#set~0#1.base_34|) 0)))) is different from true [2022-12-13 18:49:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 72028 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72028 trivial. 0 not checked. [2022-12-13 18:49:58,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:49:58,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455779497] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:49:58,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:49:58,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [193] total 196 [2022-12-13 18:49:58,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250222608] [2022-12-13 18:49:58,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:49:58,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:49:58,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:49:58,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:49:58,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18534, Invalid=19299, Unknown=1, NotChecked=386, Total=38220 [2022-12-13 18:49:58,141 INFO L87 Difference]: Start difference. First operand 802 states and 804 transitions. Second operand has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 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) [2022-12-13 18:49:58,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:49:58,162 INFO L93 Difference]: Finished difference Result 801 states and 803 transitions. [2022-12-13 18:49:58,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:49:58,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 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 801 [2022-12-13 18:49:58,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:49:58,164 INFO L225 Difference]: With dead ends: 801 [2022-12-13 18:49:58,164 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 18:49:58,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=18534, Invalid=19299, Unknown=1, NotChecked=386, Total=38220 [2022-12-13 18:49:58,167 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:49:58,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-12-13 18:49:58,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 18:49:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 18:49:58,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-12-13 18:49:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 18:49:58,168 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 801 [2022-12-13 18:49:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:49:58,169 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 18:49:58,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 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) [2022-12-13 18:49:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 18:49:58,169 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 18:49:58,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 26 remaining) [2022-12-13 18:49:58,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2022-12-13 18:49:58,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2022-12-13 18:49:58,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2022-12-13 18:49:58,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2022-12-13 18:49:58,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2022-12-13 18:49:58,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2022-12-13 18:49:58,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2022-12-13 18:49:58,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2022-12-13 18:49:58,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2022-12-13 18:49:58,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2022-12-13 18:49:58,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2022-12-13 18:49:58,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2022-12-13 18:49:58,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2022-12-13 18:49:58,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2022-12-13 18:49:58,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2022-12-13 18:49:58,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2022-12-13 18:49:58,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 26 remaining) [2022-12-13 18:49:58,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 26 remaining) [2022-12-13 18:49:58,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 26 remaining) [2022-12-13 18:49:58,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2022-12-13 18:49:58,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2022-12-13 18:49:58,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2022-12-13 18:49:58,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2022-12-13 18:49:58,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (1 of 26 remaining) [2022-12-13 18:49:58,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 26 remaining) [2022-12-13 18:49:58,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 18:49:58,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 18:49:58,381 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:49:58,386 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:49:58,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:49:58 BoogieIcfgContainer [2022-12-13 18:49:58,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:49:58,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:49:58,395 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:49:58,395 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:49:58,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:48:22" (3/4) ... [2022-12-13 18:49:58,404 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:49:58,415 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-13 18:49:58,420 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-12-13 18:49:58,420 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-13 18:49:58,421 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 18:49:58,421 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 18:49:58,449 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:49:58,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:49:58,449 INFO L158 Benchmark]: Toolchain (without parser) took 96541.70ms. Allocated memory was 130.0MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 97.9MB in the beginning and 586.4MB in the end (delta: -488.5MB). Peak memory consumption was 612.1MB. Max. memory is 16.1GB. [2022-12-13 18:49:58,449 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 46.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:49:58,449 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.77ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 86.3MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 18:49:58,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.67ms. Allocated memory is still 130.0MB. Free memory was 86.3MB in the beginning and 84.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:49:58,450 INFO L158 Benchmark]: Boogie Preprocessor took 27.61ms. Allocated memory is still 130.0MB. Free memory was 84.3MB in the beginning and 82.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:49:58,450 INFO L158 Benchmark]: RCFGBuilder took 377.07ms. Allocated memory is still 130.0MB. Free memory was 82.7MB in the beginning and 64.4MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 18:49:58,450 INFO L158 Benchmark]: TraceAbstraction took 95796.67ms. Allocated memory was 130.0MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 63.9MB in the beginning and 590.5MB in the end (delta: -526.6MB). Peak memory consumption was 574.3MB. Max. memory is 16.1GB. [2022-12-13 18:49:58,450 INFO L158 Benchmark]: Witness Printer took 54.19ms. Allocated memory is still 1.2GB. Free memory was 590.5MB in the beginning and 586.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 18:49:58,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 46.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.77ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 86.3MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.67ms. Allocated memory is still 130.0MB. Free memory was 86.3MB in the beginning and 84.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.61ms. Allocated memory is still 130.0MB. Free memory was 84.3MB in the beginning and 82.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 377.07ms. Allocated memory is still 130.0MB. Free memory was 82.7MB in the beginning and 64.4MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 95796.67ms. Allocated memory was 130.0MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 63.9MB in the beginning and 590.5MB in the end (delta: -526.6MB). Peak memory consumption was 574.3MB. Max. memory is 16.1GB. * Witness Printer took 54.19ms. Allocated memory is still 1.2GB. Free memory was 590.5MB in the beginning and 586.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 90 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 95.7s, OverallIterations: 16, TraceHistogramMax: 190, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 47.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41992 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41617 mSDsluCounter, 10654 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 29 IncrementalHoareTripleChecker+Unchecked, 9035 mSDsCounter, 4892 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6507 IncrementalHoareTripleChecker+Invalid, 11428 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4892 mSolverCounterUnsat, 1619 mSDtfsCounter, 6507 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3643 GetRequests, 2805 SyntacticMatches, 1 SemanticMatches, 837 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20803 ImplicationChecksByTransitivity, 26.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=802occurred in iteration=15, InterpolantAutomatonStates: 608, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 13091 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 43.4s InterpolantComputationTime, 5355 NumberOfCodeBlocks, 3963 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 6122 ConstructedInterpolants, 799 QuantifiedInterpolants, 23497 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3260 ConjunctsInSsa, 230 ConjunctsInUnsatCore, 32 InterpolantComputations, 10 PerfectInterpolantSequences, 151229/292225 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 18:49:58,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_634b15b4-cac4-4d65-bc6d-0a2ab866530b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE