./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_update_all.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_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/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_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_update_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/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_21c91465-bb49-40b8-978a-23373f68043b/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 1fd0aba5d9be2820550e57012fb4e12f76fe291bb253443319d08539e5b2ba1a --- 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 13:56:22,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:56:22,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:56:22,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:56:22,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:56:22,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:56:22,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:56:22,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:56:22,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:56:22,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:56:22,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:56:22,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:56:22,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:56:22,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:56:22,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:56:22,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:56:22,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:56:22,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:56:22,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:56:22,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:56:22,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:56:22,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:56:22,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:56:22,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:56:22,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:56:22,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:56:22,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:56:22,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:56:22,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:56:22,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:56:22,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:56:22,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:56:22,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:56:22,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:56:22,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:56:22,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:56:22,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:56:22,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:56:22,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:56:22,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:56:22,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:56:22,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 13:56:22,096 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:56:22,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:56:22,096 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:56:22,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:56:22,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:56:22,097 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:56:22,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:56:22,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:56:22,098 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:56:22,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:56:22,098 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:56:22,099 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:56:22,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:56:22,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:56:22,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:56:22,099 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 13:56:22,099 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 13:56:22,099 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 13:56:22,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:56:22,100 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:56:22,100 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:56:22,100 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:56:22,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:56:22,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:56:22,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:56:22,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:56:22,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:56:22,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:56:22,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:56:22,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:56:22,102 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:56:22,102 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:56:22,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:56:22,102 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:56:22,102 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_21c91465-bb49-40b8-978a-23373f68043b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fd0aba5d9be2820550e57012fb4e12f76fe291bb253443319d08539e5b2ba1a [2022-12-13 13:56:22,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:56:22,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:56:22,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:56:22,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:56:22,324 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:56:22,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/list-simple/sll2n_update_all.i [2022-12-13 13:56:24,924 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:56:25,112 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:56:25,112 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/sv-benchmarks/c/list-simple/sll2n_update_all.i [2022-12-13 13:56:25,119 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/data/cc815065f/e55dd5bd1e7e41f6939daa5fd30c3aa5/FLAGc04d17f71 [2022-12-13 13:56:25,481 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/data/cc815065f/e55dd5bd1e7e41f6939daa5fd30c3aa5 [2022-12-13 13:56:25,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:56:25,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:56:25,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:56:25,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:56:25,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:56:25,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6670fb91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25, skipping insertion in model container [2022-12-13 13:56:25,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:56:25,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:56:25,688 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_21c91465-bb49-40b8-978a-23373f68043b/sv-benchmarks/c/list-simple/sll2n_update_all.i[24218,24231] [2022-12-13 13:56:25,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:56:25,697 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:56:25,725 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_21c91465-bb49-40b8-978a-23373f68043b/sv-benchmarks/c/list-simple/sll2n_update_all.i[24218,24231] [2022-12-13 13:56:25,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:56:25,742 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:56:25,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25 WrapperNode [2022-12-13 13:56:25,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:56:25,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:56:25,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:56:25,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:56:25,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,772 INFO L138 Inliner]: procedures = 126, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 121 [2022-12-13 13:56:25,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:56:25,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:56:25,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:56:25,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:56:25,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,792 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:56:25,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:56:25,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:56:25,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:56:25,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25" (1/1) ... [2022-12-13 13:56:25,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:56:25,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:25,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:56:25,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:56:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:56:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:56:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:56:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:56:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 13:56:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 13:56:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:56:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:56:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:56:25,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:56:25,943 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:56:25,944 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:56:26,132 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:56:26,137 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:56:26,137 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 13:56:26,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:56:26 BoogieIcfgContainer [2022-12-13 13:56:26,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:56:26,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:56:26,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:56:26,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:56:26,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:56:25" (1/3) ... [2022-12-13 13:56:26,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ab4911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:56:26, skipping insertion in model container [2022-12-13 13:56:26,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:56:25" (2/3) ... [2022-12-13 13:56:26,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ab4911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:56:26, skipping insertion in model container [2022-12-13 13:56:26,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:56:26" (3/3) ... [2022-12-13 13:56:26,145 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_update_all.i [2022-12-13 13:56:26,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:56:26,159 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2022-12-13 13:56:26,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:56:26,195 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;@b00d64a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:56:26,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 13:56:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 63 states have internal predecessors, (77), 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 13:56:26,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 13:56:26,203 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:26,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 13:56:26,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:26,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:26,207 INFO L85 PathProgramCache]: Analyzing trace with hash 28698858, now seen corresponding path program 1 times [2022-12-13 13:56:26,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:26,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026153400] [2022-12-13 13:56:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:26,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:26,373 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 13:56:26,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:26,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026153400] [2022-12-13 13:56:26,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026153400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:26,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:26,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:56:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442622331] [2022-12-13 13:56:26,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:26,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:56:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:26,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:56:26,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:56:26,405 INFO L87 Difference]: Start difference. First operand has 64 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 63 states have internal predecessors, (77), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 13:56:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:26,485 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2022-12-13 13:56:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:56:26,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-12-13 13:56:26,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:26,494 INFO L225 Difference]: With dead ends: 109 [2022-12-13 13:56:26,494 INFO L226 Difference]: Without dead ends: 104 [2022-12-13 13:56:26,496 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 13:56:26,498 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 63 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:26,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 133 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:56:26,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-12-13 13:56:26,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 59. [2022-12-13 13:56:26,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.6) internal successors, (64), 58 states have internal predecessors, (64), 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 13:56:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2022-12-13 13:56:26,530 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 5 [2022-12-13 13:56:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:26,531 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2022-12-13 13:56:26,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 13:56:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2022-12-13 13:56:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 13:56:26,531 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:26,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 13:56:26,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:56:26,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:26,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:26,533 INFO L85 PathProgramCache]: Analyzing trace with hash 28698859, now seen corresponding path program 1 times [2022-12-13 13:56:26,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:26,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903675089] [2022-12-13 13:56:26,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:26,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:26,631 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 13:56:26,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:26,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903675089] [2022-12-13 13:56:26,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903675089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:26,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:26,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:56:26,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105196815] [2022-12-13 13:56:26,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:26,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:56:26,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:26,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:56:26,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:56:26,635 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 13:56:26,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:26,678 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2022-12-13 13:56:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:56:26,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-12-13 13:56:26,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:26,679 INFO L225 Difference]: With dead ends: 102 [2022-12-13 13:56:26,680 INFO L226 Difference]: Without dead ends: 102 [2022-12-13 13:56:26,680 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 13:56:26,681 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 58 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:26,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 135 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-12-13 13:56:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 57. [2022-12-13 13:56:26,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 40 states have (on average 1.55) internal successors, (62), 56 states have internal predecessors, (62), 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 13:56:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2022-12-13 13:56:26,686 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 5 [2022-12-13 13:56:26,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:26,687 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2022-12-13 13:56:26,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 13:56:26,687 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2022-12-13 13:56:26,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 13:56:26,687 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:26,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:26,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:56:26,688 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:26,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:26,688 INFO L85 PathProgramCache]: Analyzing trace with hash 231010834, now seen corresponding path program 1 times [2022-12-13 13:56:26,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:26,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130253637] [2022-12-13 13:56:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:26,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:26,726 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 13:56:26,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:26,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130253637] [2022-12-13 13:56:26,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130253637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:26,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:26,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:56:26,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724203720] [2022-12-13 13:56:26,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:26,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:56:26,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:26,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:56:26,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:56:26,728 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 13:56:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:26,738 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2022-12-13 13:56:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:56:26,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 13:56:26,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:26,740 INFO L225 Difference]: With dead ends: 68 [2022-12-13 13:56:26,740 INFO L226 Difference]: Without dead ends: 68 [2022-12-13 13:56:26,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 13:56:26,741 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 10 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:26,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 118 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-13 13:56:26,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2022-12-13 13:56:26,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 57 states have internal predecessors, (63), 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 13:56:26,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2022-12-13 13:56:26,745 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 8 [2022-12-13 13:56:26,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:26,745 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2022-12-13 13:56:26,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 13:56:26,746 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2022-12-13 13:56:26,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 13:56:26,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:26,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:26,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:56:26,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:26,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:26,747 INFO L85 PathProgramCache]: Analyzing trace with hash -245418610, now seen corresponding path program 1 times [2022-12-13 13:56:26,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:26,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134921130] [2022-12-13 13:56:26,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:26,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:26,807 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 13:56:26,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:26,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134921130] [2022-12-13 13:56:26,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134921130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:26,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:26,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:56:26,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137014922] [2022-12-13 13:56:26,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:26,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:56:26,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:26,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:56:26,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:56:26,810 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 13:56:26,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:26,887 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2022-12-13 13:56:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:56:26,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2022-12-13 13:56:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:26,888 INFO L225 Difference]: With dead ends: 76 [2022-12-13 13:56:26,888 INFO L226 Difference]: Without dead ends: 76 [2022-12-13 13:56:26,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:56:26,889 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 164 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:26,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 67 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:26,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-12-13 13:56:26,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2022-12-13 13:56:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 56 states have internal predecessors, (62), 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 13:56:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2022-12-13 13:56:26,893 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 9 [2022-12-13 13:56:26,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:26,893 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2022-12-13 13:56:26,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 13:56:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2022-12-13 13:56:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 13:56:26,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:26,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:26,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:56:26,894 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:26,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:26,894 INFO L85 PathProgramCache]: Analyzing trace with hash -245418609, now seen corresponding path program 1 times [2022-12-13 13:56:26,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:26,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737382938] [2022-12-13 13:56:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:26,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:27,006 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 13:56:27,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:27,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737382938] [2022-12-13 13:56:27,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737382938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:27,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:27,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:56:27,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261966665] [2022-12-13 13:56:27,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:27,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:56:27,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:27,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:56:27,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:56:27,008 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 13:56:27,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:27,081 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-12-13 13:56:27,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:56:27,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2022-12-13 13:56:27,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:27,082 INFO L225 Difference]: With dead ends: 61 [2022-12-13 13:56:27,082 INFO L226 Difference]: Without dead ends: 61 [2022-12-13 13:56:27,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:56:27,084 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 163 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:27,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 45 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-13 13:56:27,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2022-12-13 13:56:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 55 states have internal predecessors, (61), 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 13:56:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-12-13 13:56:27,088 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 9 [2022-12-13 13:56:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:27,088 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-12-13 13:56:27,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 13:56:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-12-13 13:56:27,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 13:56:27,089 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:27,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:27,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:56:27,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:27,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:27,090 INFO L85 PathProgramCache]: Analyzing trace with hash -806744226, now seen corresponding path program 1 times [2022-12-13 13:56:27,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:27,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105587052] [2022-12-13 13:56:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:27,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:56:27,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:27,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105587052] [2022-12-13 13:56:27,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105587052] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:27,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344901364] [2022-12-13 13:56:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:27,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:27,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:27,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:27,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:56:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:27,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:56:27,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:56:27,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:56:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:56:27,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344901364] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:56:27,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:56:27,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-12-13 13:56:27,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068264223] [2022-12-13 13:56:27,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:56:27,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:56:27,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:27,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:56:27,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:56:27,309 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 13:56:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:27,320 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2022-12-13 13:56:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:56:27,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 17 [2022-12-13 13:56:27,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:27,321 INFO L225 Difference]: With dead ends: 65 [2022-12-13 13:56:27,321 INFO L226 Difference]: Without dead ends: 65 [2022-12-13 13:56:27,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:56:27,322 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 8 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:27,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 163 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:27,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-13 13:56:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-12-13 13:56:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.4) internal successors, (70), 64 states have internal predecessors, (70), 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 13:56:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2022-12-13 13:56:27,326 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 17 [2022-12-13 13:56:27,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:27,327 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2022-12-13 13:56:27,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 13:56:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2022-12-13 13:56:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 13:56:27,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:27,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:27,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:56:27,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 13:56:27,529 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:27,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:27,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2130913170, now seen corresponding path program 2 times [2022-12-13 13:56:27,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:27,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731070140] [2022-12-13 13:56:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:27,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:27,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:56:27,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:27,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731070140] [2022-12-13 13:56:27,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731070140] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:27,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:27,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:56:27,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358608381] [2022-12-13 13:56:27,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:27,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:56:27,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:27,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:56:27,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:56:27,644 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 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 13:56:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:27,826 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2022-12-13 13:56:27,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:56:27,826 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 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 26 [2022-12-13 13:56:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:27,827 INFO L225 Difference]: With dead ends: 116 [2022-12-13 13:56:27,827 INFO L226 Difference]: Without dead ends: 116 [2022-12-13 13:56:27,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:56:27,828 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 380 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:27,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 141 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:56:27,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-12-13 13:56:27,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 68. [2022-12-13 13:56:27,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 67 states have internal predecessors, (76), 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 13:56:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2022-12-13 13:56:27,836 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 26 [2022-12-13 13:56:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:27,836 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2022-12-13 13:56:27,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 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 13:56:27,836 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2022-12-13 13:56:27,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 13:56:27,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:27,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:27,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:56:27,837 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:27,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:27,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2130913171, now seen corresponding path program 1 times [2022-12-13 13:56:27,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:27,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460369596] [2022-12-13 13:56:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:27,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:56:28,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:28,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460369596] [2022-12-13 13:56:28,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460369596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:28,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:28,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:56:28,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960112025] [2022-12-13 13:56:28,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:28,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:56:28,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:28,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:56:28,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:56:28,027 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 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 13:56:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:28,237 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2022-12-13 13:56:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:56:28,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 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 26 [2022-12-13 13:56:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:28,238 INFO L225 Difference]: With dead ends: 103 [2022-12-13 13:56:28,238 INFO L226 Difference]: Without dead ends: 103 [2022-12-13 13:56:28,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:56:28,239 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 390 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:28,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 103 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:56:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-12-13 13:56:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 68. [2022-12-13 13:56:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 67 states have internal predecessors, (74), 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 13:56:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2022-12-13 13:56:28,242 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 26 [2022-12-13 13:56:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:28,242 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2022-12-13 13:56:28,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 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 13:56:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2022-12-13 13:56:28,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 13:56:28,243 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:28,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:28,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:56:28,243 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:28,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:28,243 INFO L85 PathProgramCache]: Analyzing trace with hash -893075880, now seen corresponding path program 1 times [2022-12-13 13:56:28,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:28,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854634146] [2022-12-13 13:56:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:28,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:56:28,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:28,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854634146] [2022-12-13 13:56:28,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854634146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:28,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:28,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:56:28,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49352819] [2022-12-13 13:56:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:28,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:56:28,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:28,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:56:28,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:56:28,343 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 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 13:56:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:28,524 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2022-12-13 13:56:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:56:28,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 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 28 [2022-12-13 13:56:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:28,525 INFO L225 Difference]: With dead ends: 103 [2022-12-13 13:56:28,525 INFO L226 Difference]: Without dead ends: 103 [2022-12-13 13:56:28,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:56:28,526 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 364 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:28,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 124 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:56:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-12-13 13:56:28,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2022-12-13 13:56:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 70 states have internal predecessors, (80), 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 13:56:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2022-12-13 13:56:28,530 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 28 [2022-12-13 13:56:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:28,530 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2022-12-13 13:56:28,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 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 13:56:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2022-12-13 13:56:28,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 13:56:28,531 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:28,531 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:28,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:56:28,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:28,531 INFO L85 PathProgramCache]: Analyzing trace with hash -893075879, now seen corresponding path program 1 times [2022-12-13 13:56:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:28,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130902121] [2022-12-13 13:56:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:56:28,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:28,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130902121] [2022-12-13 13:56:28,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130902121] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:28,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509666926] [2022-12-13 13:56:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:28,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:28,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:28,603 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:28,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:56:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:28,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:56:28,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 13:56:28,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:56:28,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509666926] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:28,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:56:28,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2022-12-13 13:56:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893890886] [2022-12-13 13:56:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:28,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:56:28,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:56:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:56:28,725 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:28,740 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2022-12-13 13:56:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:56:28,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-12-13 13:56:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:28,741 INFO L225 Difference]: With dead ends: 103 [2022-12-13 13:56:28,742 INFO L226 Difference]: Without dead ends: 103 [2022-12-13 13:56:28,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:56:28,742 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 73 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:28,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 106 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:28,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-12-13 13:56:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 73. [2022-12-13 13:56:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 72 states have internal predecessors, (82), 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 13:56:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2022-12-13 13:56:28,746 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 28 [2022-12-13 13:56:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:28,746 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2022-12-13 13:56:28,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2022-12-13 13:56:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 13:56:28,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:28,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:28,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:56:28,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 13:56:28,948 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:28,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:28,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1875687586, now seen corresponding path program 1 times [2022-12-13 13:56:28,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:28,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715608872] [2022-12-13 13:56:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:28,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 13:56:29,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:29,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715608872] [2022-12-13 13:56:29,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715608872] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:29,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:29,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:56:29,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135832572] [2022-12-13 13:56:29,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:29,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:56:29,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:29,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:56:29,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:56:29,090 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 13:56:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:29,122 INFO L93 Difference]: Finished difference Result 147 states and 170 transitions. [2022-12-13 13:56:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:56:29,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 29 [2022-12-13 13:56:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:29,123 INFO L225 Difference]: With dead ends: 147 [2022-12-13 13:56:29,123 INFO L226 Difference]: Without dead ends: 147 [2022-12-13 13:56:29,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:56:29,123 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 88 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:29,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 161 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-12-13 13:56:29,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 74. [2022-12-13 13:56:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 73 states have internal predecessors, (83), 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 13:56:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2022-12-13 13:56:29,126 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 29 [2022-12-13 13:56:29,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:29,126 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2022-12-13 13:56:29,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 13:56:29,126 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2022-12-13 13:56:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 13:56:29,126 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:29,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:29,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:56:29,127 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:29,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1668563827, now seen corresponding path program 1 times [2022-12-13 13:56:29,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:29,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549959454] [2022-12-13 13:56:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:29,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:56:29,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:29,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549959454] [2022-12-13 13:56:29,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549959454] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:29,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603433668] [2022-12-13 13:56:29,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:29,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:29,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:29,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:29,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:56:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:29,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:56:29,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 13:56:29,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:56:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 13:56:29,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603433668] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:56:29,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:56:29,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-12-13 13:56:29,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896628458] [2022-12-13 13:56:29,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:56:29,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:56:29,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:29,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:56:29,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:56:29,397 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 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 13:56:29,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:29,436 INFO L93 Difference]: Finished difference Result 126 states and 145 transitions. [2022-12-13 13:56:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:56:29,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 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 33 [2022-12-13 13:56:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:29,437 INFO L225 Difference]: With dead ends: 126 [2022-12-13 13:56:29,437 INFO L226 Difference]: Without dead ends: 126 [2022-12-13 13:56:29,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:56:29,438 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 127 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:29,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 275 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:29,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-13 13:56:29,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 90. [2022-12-13 13:56:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 75 states have (on average 1.44) internal successors, (108), 89 states have internal predecessors, (108), 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 13:56:29,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2022-12-13 13:56:29,440 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 33 [2022-12-13 13:56:29,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:29,440 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2022-12-13 13:56:29,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 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 13:56:29,441 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2022-12-13 13:56:29,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 13:56:29,441 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:29,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:29,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:56:29,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:29,643 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:29,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:29,644 INFO L85 PathProgramCache]: Analyzing trace with hash -146010198, now seen corresponding path program 1 times [2022-12-13 13:56:29,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:29,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093051946] [2022-12-13 13:56:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:56:30,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:30,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093051946] [2022-12-13 13:56:30,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093051946] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:30,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905254543] [2022-12-13 13:56:30,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:30,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:30,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:30,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:30,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:56:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:30,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-13 13:56:30,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:30,475 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 13:56:30,515 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 13:56:30,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-12-13 13:56:30,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:56:30,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:30,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 13:56:30,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-12-13 13:56:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:56:30,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:56:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:56:37,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905254543] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:56:37,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:56:37,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-12-13 13:56:37,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293281897] [2022-12-13 13:56:37,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:56:37,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 13:56:37,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:37,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 13:56:37,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1064, Unknown=3, NotChecked=0, Total=1190 [2022-12-13 13:56:37,377 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 35 states, 34 states have (on average 2.264705882352941) internal successors, (77), 35 states have internal predecessors, (77), 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 13:56:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:39,620 INFO L93 Difference]: Finished difference Result 176 states and 212 transitions. [2022-12-13 13:56:39,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 13:56:39,620 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.264705882352941) internal successors, (77), 35 states have internal predecessors, (77), 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 34 [2022-12-13 13:56:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:39,621 INFO L225 Difference]: With dead ends: 176 [2022-12-13 13:56:39,621 INFO L226 Difference]: Without dead ends: 176 [2022-12-13 13:56:39,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=581, Invalid=2068, Unknown=3, NotChecked=0, Total=2652 [2022-12-13 13:56:39,622 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1444 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:39,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 563 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 13:56:39,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-12-13 13:56:39,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 100. [2022-12-13 13:56:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 99 states have internal predecessors, (123), 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 13:56:39,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2022-12-13 13:56:39,626 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 34 [2022-12-13 13:56:39,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:39,626 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2022-12-13 13:56:39,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.264705882352941) internal successors, (77), 35 states have internal predecessors, (77), 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 13:56:39,627 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2022-12-13 13:56:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 13:56:39,627 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:39,627 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:39,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:56:39,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 13:56:39,829 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:39,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:39,830 INFO L85 PathProgramCache]: Analyzing trace with hash -146010197, now seen corresponding path program 1 times [2022-12-13 13:56:39,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:39,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309146245] [2022-12-13 13:56:39,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:39,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:56:40,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:40,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309146245] [2022-12-13 13:56:40,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309146245] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:40,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136825476] [2022-12-13 13:56:40,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:40,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:40,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:40,612 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:40,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:56:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:40,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-13 13:56:40,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:40,698 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 13:56:40,852 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 13:56:40,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 13:56:40,864 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:56:40,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 13:56:40,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:56:40,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:56:41,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:41,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 34 [2022-12-13 13:56:41,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:41,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 33 [2022-12-13 13:56:41,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2022-12-13 13:56:41,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2022-12-13 13:56:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:56:41,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:56:42,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2022-12-13 13:56:42,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:56:42,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136825476] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:56:42,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:56:42,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 15] total 47 [2022-12-13 13:56:42,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481594968] [2022-12-13 13:56:42,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:56:42,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 13:56:42,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:42,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 13:56:42,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2113, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 13:56:42,487 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 48 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 48 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 13:56:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:45,393 INFO L93 Difference]: Finished difference Result 270 states and 325 transitions. [2022-12-13 13:56:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 13:56:45,393 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 48 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 34 [2022-12-13 13:56:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:45,394 INFO L225 Difference]: With dead ends: 270 [2022-12-13 13:56:45,394 INFO L226 Difference]: Without dead ends: 270 [2022-12-13 13:56:45,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=842, Invalid=4128, Unknown=0, NotChecked=0, Total=4970 [2022-12-13 13:56:45,396 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 3390 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:45,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3390 Valid, 928 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 13:56:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-12-13 13:56:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 108. [2022-12-13 13:56:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 107 states have internal predecessors, (134), 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 13:56:45,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 134 transitions. [2022-12-13 13:56:45,400 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 134 transitions. Word has length 34 [2022-12-13 13:56:45,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:45,400 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 134 transitions. [2022-12-13 13:56:45,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 48 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 13:56:45,401 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 134 transitions. [2022-12-13 13:56:45,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 13:56:45,402 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:45,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:45,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:56:45,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:45,603 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:45,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:45,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1013729350, now seen corresponding path program 2 times [2022-12-13 13:56:45,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:45,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409507997] [2022-12-13 13:56:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:45,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 13:56:45,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:45,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409507997] [2022-12-13 13:56:45,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409507997] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:45,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21201241] [2022-12-13 13:56:45,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:56:45,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:45,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:45,710 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:45,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:56:45,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:56:45,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:56:45,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:56:45,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 13:56:45,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:56:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 13:56:45,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21201241] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:56:45,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:56:45,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2022-12-13 13:56:45,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130033018] [2022-12-13 13:56:45,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:56:45,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:56:45,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:45,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:56:45,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:56:45,900 INFO L87 Difference]: Start difference. First operand 108 states and 134 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 13:56:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:45,950 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2022-12-13 13:56:45,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:56:45,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 37 [2022-12-13 13:56:45,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:45,951 INFO L225 Difference]: With dead ends: 100 [2022-12-13 13:56:45,951 INFO L226 Difference]: Without dead ends: 100 [2022-12-13 13:56:45,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:56:45,952 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 167 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:45,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:45,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-12-13 13:56:45,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2022-12-13 13:56:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 82 states have (on average 1.3780487804878048) internal successors, (113), 93 states have internal predecessors, (113), 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 13:56:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2022-12-13 13:56:45,955 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 37 [2022-12-13 13:56:45,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:45,955 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2022-12-13 13:56:45,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 13:56:45,955 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2022-12-13 13:56:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 13:56:45,956 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:45,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:45,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:56:46,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 13:56:46,157 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:46,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:46,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1104183591, now seen corresponding path program 2 times [2022-12-13 13:56:46,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:46,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526957972] [2022-12-13 13:56:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:46,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:56:46,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:46,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526957972] [2022-12-13 13:56:46,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526957972] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:46,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590978825] [2022-12-13 13:56:46,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:56:46,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:46,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:46,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:46,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:56:46,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:56:46,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:56:46,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:56:46,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 13:56:46,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:56:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 13:56:46,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590978825] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:56:46,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:56:46,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2022-12-13 13:56:46,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434616910] [2022-12-13 13:56:46,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:56:46,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 13:56:46,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:46,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 13:56:46,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:56:46,432 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 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 13:56:46,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:46,525 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2022-12-13 13:56:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:56:46,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 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 38 [2022-12-13 13:56:46,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:46,525 INFO L225 Difference]: With dead ends: 96 [2022-12-13 13:56:46,525 INFO L226 Difference]: Without dead ends: 96 [2022-12-13 13:56:46,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-12-13 13:56:46,526 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 193 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:46,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 337 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-12-13 13:56:46,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2022-12-13 13:56:46,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 78 states have (on average 1.358974358974359) internal successors, (106), 89 states have internal predecessors, (106), 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 13:56:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2022-12-13 13:56:46,528 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 38 [2022-12-13 13:56:46,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:46,528 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2022-12-13 13:56:46,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 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 13:56:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2022-12-13 13:56:46,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-13 13:56:46,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:46,529 INFO L195 NwaCegarLoop]: trace histogram [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 13:56:46,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 13:56:46,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 13:56:46,731 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:46,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:46,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1861613195, now seen corresponding path program 1 times [2022-12-13 13:56:46,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:46,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355461688] [2022-12-13 13:56:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:46,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:56:46,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:46,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355461688] [2022-12-13 13:56:46,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355461688] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:46,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:46,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:56:46,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227121116] [2022-12-13 13:56:46,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:46,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:56:46,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:46,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:56:46,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:56:46,935 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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 13:56:47,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:47,130 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2022-12-13 13:56:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:56:47,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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 41 [2022-12-13 13:56:47,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:47,131 INFO L225 Difference]: With dead ends: 119 [2022-12-13 13:56:47,131 INFO L226 Difference]: Without dead ends: 119 [2022-12-13 13:56:47,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:56:47,132 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 468 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:47,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 75 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:56:47,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-13 13:56:47,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 90. [2022-12-13 13:56:47,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 78 states have (on average 1.3076923076923077) internal successors, (102), 89 states have internal predecessors, (102), 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 13:56:47,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2022-12-13 13:56:47,135 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 41 [2022-12-13 13:56:47,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:47,135 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2022-12-13 13:56:47,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 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 13:56:47,136 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2022-12-13 13:56:47,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 13:56:47,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:47,136 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:47,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 13:56:47,136 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:47,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:47,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1835573310, now seen corresponding path program 3 times [2022-12-13 13:56:47,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:47,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683660493] [2022-12-13 13:56:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:47,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:56:47,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:47,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683660493] [2022-12-13 13:56:47,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683660493] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:47,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618407428] [2022-12-13 13:56:47,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:56:47,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:47,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:47,234 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:47,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:56:47,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 13:56:47,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:56:47,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:56:47,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 13:56:47,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:56:47,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618407428] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:47,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:56:47,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2022-12-13 13:56:47,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245093454] [2022-12-13 13:56:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:47,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:56:47,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:47,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:56:47,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:56:47,416 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:47,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:47,432 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2022-12-13 13:56:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:56:47,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-12-13 13:56:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:47,432 INFO L225 Difference]: With dead ends: 90 [2022-12-13 13:56:47,433 INFO L226 Difference]: Without dead ends: 90 [2022-12-13 13:56:47,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:56:47,433 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 81 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:47,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 117 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:47,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-12-13 13:56:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2022-12-13 13:56:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 83 states have internal predecessors, (94), 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 13:56:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2022-12-13 13:56:47,435 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 42 [2022-12-13 13:56:47,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:47,435 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2022-12-13 13:56:47,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:47,435 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2022-12-13 13:56:47,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 13:56:47,436 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:47,436 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-12-13 13:56:47,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 13:56:47,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 13:56:47,637 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:47,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:47,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1595673087, now seen corresponding path program 1 times [2022-12-13 13:56:47,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:47,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647395016] [2022-12-13 13:56:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:47,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 13:56:47,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:47,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647395016] [2022-12-13 13:56:47,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647395016] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:47,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:47,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:56:47,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604958065] [2022-12-13 13:56:47,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:47,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:56:47,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:47,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:56:47,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:56:47,711 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 13:56:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:47,730 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2022-12-13 13:56:47,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:56:47,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 44 [2022-12-13 13:56:47,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:47,731 INFO L225 Difference]: With dead ends: 81 [2022-12-13 13:56:47,731 INFO L226 Difference]: Without dead ends: 81 [2022-12-13 13:56:47,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 13:56:47,731 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 20 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:47,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 149 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:56:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-13 13:56:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-12-13 13:56:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 78 states have internal predecessors, (83), 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 13:56:47,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2022-12-13 13:56:47,734 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 44 [2022-12-13 13:56:47,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:47,734 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2022-12-13 13:56:47,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 13:56:47,734 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2022-12-13 13:56:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 13:56:47,734 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:47,734 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-12-13 13:56:47,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 13:56:47,735 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:47,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:47,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2124312202, now seen corresponding path program 1 times [2022-12-13 13:56:47,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:47,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075381192] [2022-12-13 13:56:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:47,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,585 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:56:48,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:48,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075381192] [2022-12-13 13:56:48,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075381192] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:48,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496049888] [2022-12-13 13:56:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:48,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:48,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:48,587 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:48,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 13:56:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:48,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 95 conjunts are in the unsatisfiable core [2022-12-13 13:56:48,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:48,698 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 13:56:48,825 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:56:48,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 13:56:48,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:56:49,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-12-13 13:56:49,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:56:49,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:49,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2022-12-13 13:56:49,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:56:49,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 13:56:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:56:49,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:56:49,705 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1120 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1120) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_main_~len~0#1|)) (forall ((v_ArrVal_1120 (Array Int Int))) (<= |c_ULTIMATE.start_main_~len~0#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1120) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) is different from false [2022-12-13 13:56:49,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-12-13 13:56:49,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:49,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 13:56:50,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496049888] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:56:50,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:56:50,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 24] total 64 [2022-12-13 13:56:50,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851093218] [2022-12-13 13:56:50,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:56:50,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-13 13:56:50,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:50,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-13 13:56:50,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=3687, Unknown=1, NotChecked=122, Total=4032 [2022-12-13 13:56:50,259 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 64 states, 64 states have (on average 1.875) internal successors, (120), 64 states have internal predecessors, (120), 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 13:56:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:51,994 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2022-12-13 13:56:51,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 13:56:51,995 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.875) internal successors, (120), 64 states have internal predecessors, (120), 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 45 [2022-12-13 13:56:51,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:51,995 INFO L225 Difference]: With dead ends: 100 [2022-12-13 13:56:51,995 INFO L226 Difference]: Without dead ends: 100 [2022-12-13 13:56:51,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1161, Invalid=7398, Unknown=1, NotChecked=182, Total=8742 [2022-12-13 13:56:51,997 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 929 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:51,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 933 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1606 Invalid, 0 Unknown, 82 Unchecked, 0.6s Time] [2022-12-13 13:56:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-12-13 13:56:51,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2022-12-13 13:56:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 78 states have internal predecessors, (82), 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 13:56:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2022-12-13 13:56:51,998 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 45 [2022-12-13 13:56:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:51,998 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2022-12-13 13:56:51,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.875) internal successors, (120), 64 states have internal predecessors, (120), 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 13:56:51,999 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2022-12-13 13:56:51,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 13:56:51,999 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:51,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:52,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 13:56:52,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:52,200 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:56:52,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:52,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1599429550, now seen corresponding path program 1 times [2022-12-13 13:56:52,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:52,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689021557] [2022-12-13 13:56:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:52,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:56:53,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:53,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689021557] [2022-12-13 13:56:53,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689021557] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:53,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45983227] [2022-12-13 13:56:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:53,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:53,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:53,308 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:53,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 13:56:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:53,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-13 13:56:53,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:53,440 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 13:56:53,530 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:56:53,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 13:56:53,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:56:53,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:53,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-12-13 13:56:53,907 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 13:56:53,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-12-13 13:56:54,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-12-13 13:56:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:56:54,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:56:54,119 INFO L321 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-12-13 13:56:54,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:56:54,123 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1230 (Array Int Int))) (= |c_ULTIMATE.start_sll_update_at_~head#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_1230) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) is different from false [2022-12-13 13:56:54,129 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1230 (Array Int Int))) (= |c_ULTIMATE.start_sll_update_at_#t~mem10#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_#t~mem10#1.base| v_ArrVal_1230) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) is different from false [2022-12-13 13:56:54,133 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1230 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_sll_update_at_~head#1.offset| 4)))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1230) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))))) is different from false [2022-12-13 13:56:54,210 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1230 (Array Int Int)) (v_ArrVal_1229 Int)) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) |c_ULTIMATE.start_sll_update_at_~head#1.offset| v_ArrVal_1229))) (.cse2 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~s~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_1230) |c_ULTIMATE.start_main_~s~0#1.base|) .cse2) .cse1)))) is different from false [2022-12-13 13:56:54,387 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1230 (Array Int Int)) (|v_ULTIMATE.start_sll_update_at_~head#1.offset_27| Int) (v_ArrVal_1229 Int)) (or (< |c_ULTIMATE.start_sll_create_~head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_27|) (let ((.cse1 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_27| v_ArrVal_1229)) (.cse2 (+ 4 |c_ULTIMATE.start_sll_create_~head~0#1.offset|))) (let ((.cse0 (select .cse1 .cse2))) (= .cse0 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~head~0#1.base| .cse1) .cse0 v_ArrVal_1230) |c_ULTIMATE.start_sll_create_~head~0#1.base|) .cse2)))))) is different from false [2022-12-13 13:56:54,498 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:56:54,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 51 [2022-12-13 13:56:54,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:54,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:54,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:56:54,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 31 [2022-12-13 13:56:54,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-12-13 13:56:54,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 13:56:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 15 refuted. 1 times theorem prover too weak. 1 trivial. 6 not checked. [2022-12-13 13:56:54,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45983227] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:56:54,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:56:54,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 21] total 63 [2022-12-13 13:56:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65340581] [2022-12-13 13:56:54,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:56:54,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-13 13:56:54,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-13 13:56:54,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=3232, Unknown=21, NotChecked=590, Total=4032 [2022-12-13 13:56:54,771 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 64 states, 63 states have (on average 2.2698412698412698) internal successors, (143), 64 states have internal predecessors, (143), 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 13:56:58,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:57:00,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:57:02,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:02,371 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2022-12-13 13:57:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 13:57:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.2698412698412698) internal successors, (143), 64 states have internal predecessors, (143), 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 51 [2022-12-13 13:57:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:02,372 INFO L225 Difference]: With dead ends: 128 [2022-12-13 13:57:02,372 INFO L226 Difference]: Without dead ends: 128 [2022-12-13 13:57:02,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1200, Invalid=6989, Unknown=21, NotChecked=910, Total=9120 [2022-12-13 13:57:02,374 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 1733 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 37 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 537 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:02,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 909 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1625 Invalid, 17 Unknown, 537 Unchecked, 4.9s Time] [2022-12-13 13:57:02,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-12-13 13:57:02,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 83. [2022-12-13 13:57:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 82 states have internal predecessors, (89), 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 13:57:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2022-12-13 13:57:02,376 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 51 [2022-12-13 13:57:02,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:02,376 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2022-12-13 13:57:02,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.2698412698412698) internal successors, (143), 64 states have internal predecessors, (143), 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 13:57:02,377 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2022-12-13 13:57:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 13:57:02,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:02,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:02,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 13:57:02,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 13:57:02,578 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:57:02,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:02,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1599429551, now seen corresponding path program 1 times [2022-12-13 13:57:02,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:02,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312866542] [2022-12-13 13:57:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:02,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:57:03,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:03,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312866542] [2022-12-13 13:57:03,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312866542] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:03,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695930466] [2022-12-13 13:57:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:03,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:03,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:03,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:03,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 13:57:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:03,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 89 conjunts are in the unsatisfiable core [2022-12-13 13:57:03,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:03,803 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 13:57:03,900 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:57:03,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 13:57:03,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:57:04,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 13:57:04,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:57:04,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-12-13 13:57:04,313 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 13:57:04,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 51 [2022-12-13 13:57:04,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:57:04,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2022-12-13 13:57:04,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-12-13 13:57:04,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-13 13:57:04,562 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:57:04,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:57:04,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:57:04,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 51 [2022-12-13 13:57:05,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 182 [2022-12-13 13:57:05,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 174 [2022-12-13 13:57:05,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 147 [2022-12-13 13:57:05,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-12-13 13:57:05,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:57:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:57:05,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695930466] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:57:05,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:57:05,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 20, 21] total 66 [2022-12-13 13:57:05,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336145819] [2022-12-13 13:57:05,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:57:05,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-12-13 13:57:05,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-12-13 13:57:05,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=4220, Unknown=0, NotChecked=0, Total=4422 [2022-12-13 13:57:05,966 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 67 states, 66 states have (on average 2.212121212121212) internal successors, (146), 67 states have internal predecessors, (146), 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 13:57:10,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:10,616 INFO L93 Difference]: Finished difference Result 178 states and 182 transitions. [2022-12-13 13:57:10,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 13:57:10,616 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.212121212121212) internal successors, (146), 67 states have internal predecessors, (146), 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 51 [2022-12-13 13:57:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:10,617 INFO L225 Difference]: With dead ends: 178 [2022-12-13 13:57:10,617 INFO L226 Difference]: Without dead ends: 178 [2022-12-13 13:57:10,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1555, Invalid=8747, Unknown=0, NotChecked=0, Total=10302 [2022-12-13 13:57:10,619 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3831 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3831 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:10,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3831 Valid, 650 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 13:57:10,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-12-13 13:57:10,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 82. [2022-12-13 13:57:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 81 states have internal predecessors, (87), 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 13:57:10,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2022-12-13 13:57:10,621 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 51 [2022-12-13 13:57:10,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:10,621 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2022-12-13 13:57:10,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.212121212121212) internal successors, (146), 67 states have internal predecessors, (146), 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 13:57:10,621 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2022-12-13 13:57:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 13:57:10,621 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:10,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:10,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 13:57:10,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:10,823 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:57:10,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:10,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1599429606, now seen corresponding path program 1 times [2022-12-13 13:57:10,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:10,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524865206] [2022-12-13 13:57:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:10,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 13:57:10,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:10,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524865206] [2022-12-13 13:57:10,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524865206] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:10,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926236072] [2022-12-13 13:57:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:10,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:10,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:10,890 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:10,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 13:57:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:11,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:57:11,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 13:57:11,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:57:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 13:57:11,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926236072] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:57:11,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:57:11,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2022-12-13 13:57:11,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392810539] [2022-12-13 13:57:11,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:57:11,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:57:11,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:57:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:57:11,048 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 13:57:11,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:11,078 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2022-12-13 13:57:11,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:57:11,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 51 [2022-12-13 13:57:11,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:11,079 INFO L225 Difference]: With dead ends: 73 [2022-12-13 13:57:11,079 INFO L226 Difference]: Without dead ends: 73 [2022-12-13 13:57:11,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:57:11,079 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 89 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:11,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 108 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:57:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-12-13 13:57:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-12-13 13:57:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 72 states have internal predecessors, (75), 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 13:57:11,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2022-12-13 13:57:11,081 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 51 [2022-12-13 13:57:11,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:11,081 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2022-12-13 13:57:11,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 13:57:11,081 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2022-12-13 13:57:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 13:57:11,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:11,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1] [2022-12-13 13:57:11,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 13:57:11,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:11,282 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:57:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:11,283 INFO L85 PathProgramCache]: Analyzing trace with hash -2007861849, now seen corresponding path program 1 times [2022-12-13 13:57:11,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:11,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855607156] [2022-12-13 13:57:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:11,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 13:57:11,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:11,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855607156] [2022-12-13 13:57:11,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855607156] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:11,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969795699] [2022-12-13 13:57:11,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:11,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:11,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:11,333 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:11,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 13:57:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:11,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:57:11,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 13:57:11,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:57:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 13:57:11,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969795699] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:57:11,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:57:11,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-12-13 13:57:11,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290553307] [2022-12-13 13:57:11,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:57:11,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:57:11,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:11,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:57:11,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:57:11,470 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 13:57:11,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:11,499 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2022-12-13 13:57:11,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:57:11,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 13:57:11,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:11,500 INFO L225 Difference]: With dead ends: 73 [2022-12-13 13:57:11,500 INFO L226 Difference]: Without dead ends: 73 [2022-12-13 13:57:11,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:57:11,500 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 74 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:11,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 150 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:57:11,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-12-13 13:57:11,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-12-13 13:57:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.121212121212121) internal successors, (74), 72 states have internal predecessors, (74), 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 13:57:11,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-12-13 13:57:11,503 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 52 [2022-12-13 13:57:11,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:11,503 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-12-13 13:57:11,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 13:57:11,503 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-12-13 13:57:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 13:57:11,503 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:11,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-12-13 13:57:11,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 13:57:11,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 13:57:11,704 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:57:11,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:11,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1192937808, now seen corresponding path program 1 times [2022-12-13 13:57:11,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:11,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134490972] [2022-12-13 13:57:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:11,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:57:13,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:13,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134490972] [2022-12-13 13:57:13,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134490972] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:13,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189290555] [2022-12-13 13:57:13,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:13,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:13,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:13,437 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:13,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 13:57:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:13,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 111 conjunts are in the unsatisfiable core [2022-12-13 13:57:13,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:13,619 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 13:57:13,805 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:57:13,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 13:57:13,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:57:14,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 13:57:14,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:57:14,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-12-13 13:57:14,590 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 13:57:14,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 61 [2022-12-13 13:57:14,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 21 [2022-12-13 13:57:14,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:57:14,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-12-13 13:57:14,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-12-13 13:57:14,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 13:57:15,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 13:57:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:57:15,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:57:15,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 64 [2022-12-13 13:57:15,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 64 [2022-12-13 13:57:15,879 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_sll_update_at_~head#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) .cse1)) (.cse3 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) (.cse0 (+ |c_ULTIMATE.start_main_~len~0#1| 1))) (and (<= |c_ULTIMATE.start_sll_update_at_~data#1| .cse0) (forall ((v_ArrVal_1661 (Array Int Int))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base|) .cse1) (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1661) |c_ULTIMATE.start_main_~s~0#1.base|) .cse3))) (forall ((v_ArrVal_1664 (Array Int Int))) (= .cse2 (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1664) |c_ULTIMATE.start_main_~s~0#1.base|) .cse3))) (<= .cse0 |c_ULTIMATE.start_sll_update_at_~data#1|)))) is different from false [2022-12-13 13:57:18,073 WARN L837 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~i~0#1| 0) (<= 0 |c_ULTIMATE.start_main_~i~0#1|) (forall ((v_ArrVal_1661 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) .cse0) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) .cse0) v_ArrVal_1661) |c_ULTIMATE.start_main_~s~0#1.base|) .cse0))))) is different from false [2022-12-13 13:57:18,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 254 treesize of output 230 [2022-12-13 13:57:18,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 178 [2022-12-13 13:57:18,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 162 [2022-12-13 13:57:18,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-12-13 13:57:18,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:57:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-13 13:57:18,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189290555] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:57:18,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:57:18,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 28, 28] total 82 [2022-12-13 13:57:18,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500238558] [2022-12-13 13:57:18,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:57:18,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-12-13 13:57:18,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-12-13 13:57:18,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=5992, Unknown=70, NotChecked=314, Total=6642 [2022-12-13 13:57:18,997 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 82 states, 82 states have (on average 1.8780487804878048) internal successors, (154), 82 states have internal predecessors, (154), 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 13:57:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:22,517 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2022-12-13 13:57:22,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 13:57:22,518 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.8780487804878048) internal successors, (154), 82 states have internal predecessors, (154), 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 55 [2022-12-13 13:57:22,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:22,519 INFO L225 Difference]: With dead ends: 92 [2022-12-13 13:57:22,519 INFO L226 Difference]: Without dead ends: 92 [2022-12-13 13:57:22,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 113 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2465 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1282, Invalid=11312, Unknown=70, NotChecked=446, Total=13110 [2022-12-13 13:57:22,520 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1139 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:22,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 997 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2121 Invalid, 0 Unknown, 142 Unchecked, 1.1s Time] [2022-12-13 13:57:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-12-13 13:57:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 71. [2022-12-13 13:57:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 70 states have internal predecessors, (72), 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 13:57:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-12-13 13:57:22,523 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 55 [2022-12-13 13:57:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:22,523 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-12-13 13:57:22,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.8780487804878048) internal successors, (154), 82 states have internal predecessors, (154), 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 13:57:22,523 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-12-13 13:57:22,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 13:57:22,524 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:22,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-12-13 13:57:22,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 13:57:22,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 13:57:22,725 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:57:22,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:22,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1023341834, now seen corresponding path program 1 times [2022-12-13 13:57:22,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:22,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741134408] [2022-12-13 13:57:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:22,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 13:57:22,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:22,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741134408] [2022-12-13 13:57:22,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741134408] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:22,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487064430] [2022-12-13 13:57:22,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:22,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:22,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:22,855 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:22,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 13:57:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:22,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 13:57:22,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 13:57:23,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:57:23,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487064430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:23,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:57:23,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 7 [2022-12-13 13:57:23,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300042937] [2022-12-13 13:57:23,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:23,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:57:23,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:23,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:57:23,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:57:23,041 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 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 13:57:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:23,140 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2022-12-13 13:57:23,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:57:23,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 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 59 [2022-12-13 13:57:23,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:23,141 INFO L225 Difference]: With dead ends: 82 [2022-12-13 13:57:23,141 INFO L226 Difference]: Without dead ends: 82 [2022-12-13 13:57:23,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:57:23,142 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 144 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:23,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 107 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:57:23,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-12-13 13:57:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 72. [2022-12-13 13:57:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 71 states have internal predecessors, (75), 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 13:57:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2022-12-13 13:57:23,144 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 59 [2022-12-13 13:57:23,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:23,144 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2022-12-13 13:57:23,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 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 13:57:23,144 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2022-12-13 13:57:23,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 13:57:23,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:23,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-12-13 13:57:23,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 13:57:23,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 13:57:23,346 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:57:23,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1023341833, now seen corresponding path program 1 times [2022-12-13 13:57:23,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:23,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453773664] [2022-12-13 13:57:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:23,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:23,587 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 13:57:23,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:23,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453773664] [2022-12-13 13:57:23,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453773664] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:23,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:23,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:57:23,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713187753] [2022-12-13 13:57:23,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:23,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:57:23,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:23,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:57:23,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:57:23,588 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 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 13:57:23,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:23,767 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2022-12-13 13:57:23,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:57:23,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 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 59 [2022-12-13 13:57:23,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:23,768 INFO L225 Difference]: With dead ends: 80 [2022-12-13 13:57:23,768 INFO L226 Difference]: Without dead ends: 80 [2022-12-13 13:57:23,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:57:23,769 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 290 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:23,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 52 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:57:23,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-13 13:57:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2022-12-13 13:57:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 73 states have internal predecessors, (76), 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 13:57:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2022-12-13 13:57:23,770 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 59 [2022-12-13 13:57:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:23,770 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2022-12-13 13:57:23,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 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 13:57:23,771 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2022-12-13 13:57:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 13:57:23,771 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:23,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-12-13 13:57:23,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 13:57:23,771 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:57:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:23,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1658827190, now seen corresponding path program 1 times [2022-12-13 13:57:23,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:23,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011784242] [2022-12-13 13:57:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:23,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 13:57:23,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:23,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011784242] [2022-12-13 13:57:23,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011784242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:23,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:23,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 13:57:23,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842331523] [2022-12-13 13:57:23,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:23,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:57:23,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:23,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:57:23,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:57:23,859 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 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 13:57:23,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:23,972 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2022-12-13 13:57:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:57:23,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 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 60 [2022-12-13 13:57:23,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:23,973 INFO L225 Difference]: With dead ends: 77 [2022-12-13 13:57:23,973 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 13:57:23,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:57:23,973 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 272 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:23,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 81 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:57:23,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 13:57:23,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2022-12-13 13:57:23,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 73 states have internal predecessors, (75), 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 13:57:23,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2022-12-13 13:57:23,975 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 60 [2022-12-13 13:57:23,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:23,975 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2022-12-13 13:57:23,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 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 13:57:23,975 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2022-12-13 13:57:23,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 13:57:23,975 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:23,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:23,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 13:57:23,976 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:57:23,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:23,976 INFO L85 PathProgramCache]: Analyzing trace with hash -698613301, now seen corresponding path program 1 times [2022-12-13 13:57:23,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:23,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558671343] [2022-12-13 13:57:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:23,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 13:57:24,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:24,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558671343] [2022-12-13 13:57:24,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558671343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:24,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:24,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 13:57:24,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463688687] [2022-12-13 13:57:24,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:24,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:57:24,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:24,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:57:24,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:57:24,071 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 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 13:57:24,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:24,210 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2022-12-13 13:57:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:57:24,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 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 62 [2022-12-13 13:57:24,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:24,211 INFO L225 Difference]: With dead ends: 75 [2022-12-13 13:57:24,211 INFO L226 Difference]: Without dead ends: 75 [2022-12-13 13:57:24,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:57:24,212 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 255 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:24,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 65 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:57:24,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-12-13 13:57:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-12-13 13:57:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 74 states have internal predecessors, (76), 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 13:57:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2022-12-13 13:57:24,213 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 62 [2022-12-13 13:57:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:24,213 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2022-12-13 13:57:24,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 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 13:57:24,213 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2022-12-13 13:57:24,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 13:57:24,214 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:24,214 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:24,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 13:57:24,214 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:57:24,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1022827867, now seen corresponding path program 1 times [2022-12-13 13:57:24,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:24,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62858945] [2022-12-13 13:57:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:24,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 13:57:25,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:25,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62858945] [2022-12-13 13:57:25,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62858945] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:25,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813722538] [2022-12-13 13:57:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:25,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:25,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:25,046 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:25,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 13:57:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:25,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 76 conjunts are in the unsatisfiable core [2022-12-13 13:57:25,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:25,181 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 13:57:25,214 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:57:25,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 13:57:25,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:57:25,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:57:25,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-12-13 13:57:25,533 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 13:57:25,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-12-13 13:57:25,662 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:57:25,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 21 [2022-12-13 13:57:25,798 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 13:57:25,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 13:57:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 13:57:25,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:57:25,993 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:57:25,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2022-12-13 13:57:26,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 13:57:26,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 102 [2022-12-13 13:57:26,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 13:57:26,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:57:26,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:57:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 13:57:27,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813722538] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:57:27,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:57:27,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 23] total 52 [2022-12-13 13:57:27,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636526493] [2022-12-13 13:57:27,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:57:27,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-13 13:57:27,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:27,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-13 13:57:27,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2574, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 13:57:27,036 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 53 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 53 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:28,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:28,978 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2022-12-13 13:57:28,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 13:57:28,979 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 53 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-13 13:57:28,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:28,979 INFO L225 Difference]: With dead ends: 89 [2022-12-13 13:57:28,979 INFO L226 Difference]: Without dead ends: 89 [2022-12-13 13:57:28,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 98 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=791, Invalid=5371, Unknown=0, NotChecked=0, Total=6162 [2022-12-13 13:57:28,980 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 587 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:28,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 626 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 13:57:28,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-13 13:57:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2022-12-13 13:57:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 77 states have internal predecessors, (81), 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 13:57:28,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2022-12-13 13:57:28,982 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 65 [2022-12-13 13:57:28,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:28,982 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2022-12-13 13:57:28,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 53 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2022-12-13 13:57:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 13:57:28,983 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:28,983 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:28,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 13:57:29,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:29,183 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:57:29,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1022827868, now seen corresponding path program 1 times [2022-12-13 13:57:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:29,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484753302] [2022-12-13 13:57:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:57:30,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:30,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484753302] [2022-12-13 13:57:30,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484753302] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:30,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486294824] [2022-12-13 13:57:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:30,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:30,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:30,855 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:30,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 13:57:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:30,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 106 conjunts are in the unsatisfiable core [2022-12-13 13:57:30,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:31,002 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 13:57:31,170 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:57:31,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 13:57:31,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 13:57:31,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:57:31,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:57:31,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:57:31,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-13 13:57:31,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:57:31,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-12-13 13:57:31,836 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 13:57:31,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2022-12-13 13:57:31,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:57:31,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 13:57:32,146 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:57:32,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2022-12-13 13:57:32,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:57:32,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 21 [2022-12-13 13:57:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 13:57:32,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:57:32,671 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2155 (Array Int Int)) (v_ArrVal_2154 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_2155) |c_ULTIMATE.start_main_~s~0#1.base|) 4) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_2154) |c_ULTIMATE.start_main_~s~0#1.base|) 4)))) (forall ((v_ArrVal_2155 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_2155) |c_ULTIMATE.start_main_~s~0#1.base|) 4) 4)))) is different from false [2022-12-13 13:57:32,684 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2155 (Array Int Int)) (v_ArrVal_2154 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_update_at_#t~mem10#1.base| v_ArrVal_2155) |c_ULTIMATE.start_main_~s~0#1.base|) 4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_#t~mem10#1.base| v_ArrVal_2154) |c_ULTIMATE.start_main_~s~0#1.base|) 4)))) (forall ((v_ArrVal_2155 (Array Int Int))) (<= 0 (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_update_at_#t~mem10#1.base| v_ArrVal_2155) |c_ULTIMATE.start_main_~s~0#1.base|) 4))))) is different from false [2022-12-13 13:57:32,693 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_sll_update_at_~head#1.offset| 4)))) (and (forall ((v_ArrVal_2155 (Array Int Int)) (v_ArrVal_2154 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2155) |c_ULTIMATE.start_main_~s~0#1.base|) 4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2154) |c_ULTIMATE.start_main_~s~0#1.base|) 4)))) (forall ((v_ArrVal_2155 (Array Int Int))) (<= 0 (+ 4 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2155) |c_ULTIMATE.start_main_~s~0#1.base|) 4)))))) is different from false [2022-12-13 13:57:32,705 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (and (forall ((v_ArrVal_2155 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2155) |c_ULTIMATE.start_main_~s~0#1.base|) 4) 4))) (forall ((v_ArrVal_2155 (Array Int Int)) (v_ArrVal_2154 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_2155) |c_ULTIMATE.start_main_~s~0#1.base|) 4) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2154) |c_ULTIMATE.start_main_~s~0#1.base|) 4)))))) is different from false [2022-12-13 13:57:32,730 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) (.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|))) (and (forall ((v_ArrVal_2151 Int) (v_ArrVal_2150 Int) (v_ArrVal_2155 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base| (store .cse0 |c_ULTIMATE.start_sll_update_at_~head#1.offset| v_ArrVal_2151)) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| (store .cse1 |c_ULTIMATE.start_sll_update_at_~head#1.offset| v_ArrVal_2150)) |c_ULTIMATE.start_main_~s~0#1.base|) .cse2) v_ArrVal_2155) |c_ULTIMATE.start_main_~s~0#1.base|) 4) 4))) (forall ((v_ArrVal_2151 Int) (v_ArrVal_2150 Int) (v_ArrVal_2155 (Array Int Int)) (v_ArrVal_2154 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| (store .cse1 |c_ULTIMATE.start_sll_update_at_~head#1.offset| v_ArrVal_2150)))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~s~0#1.base|) .cse2))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base| (store .cse0 |c_ULTIMATE.start_sll_update_at_~head#1.offset| v_ArrVal_2151)) .cse3 v_ArrVal_2155) |c_ULTIMATE.start_main_~s~0#1.base|) 4) 8) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_2154) |c_ULTIMATE.start_main_~s~0#1.base|) 4)))))))) is different from false [2022-12-13 13:57:32,760 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) (.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (and (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_39| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_39|) (forall ((v_ArrVal_2151 Int) (v_ArrVal_2150 Int) (v_ArrVal_2155 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base| (store .cse0 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2151)) (select (store .cse1 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2150) .cse2) v_ArrVal_2155) |c_ULTIMATE.start_main_~s~0#1.base|) 4) 4))))) (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_39| Int)) (or (forall ((v_ArrVal_2151 Int) (v_ArrVal_2150 Int) (v_ArrVal_2155 (Array Int Int)) (v_ArrVal_2154 (Array Int Int))) (let ((.cse4 (store .cse1 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2150))) (let ((.cse3 (select .cse4 .cse2))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base| (store .cse0 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2151)) .cse3 v_ArrVal_2155) |c_ULTIMATE.start_main_~s~0#1.base|) 4) 8) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base| .cse4) .cse3 v_ArrVal_2154) |c_ULTIMATE.start_main_~s~0#1.base|) 4)))))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_39|))))) is different from false [2022-12-13 13:57:32,783 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_#res#1.base|)) (.cse4 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_#res#1.base|)) (.cse3 (+ |c_ULTIMATE.start_sll_create_#res#1.offset| 4))) (and (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_39| Int)) (or (forall ((v_ArrVal_2151 Int) (v_ArrVal_2150 Int) (v_ArrVal_2155 (Array Int Int)) (v_ArrVal_2154 (Array Int Int))) (let ((.cse2 (store .cse4 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2150))) (let ((.cse1 (select .cse2 .cse3))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_#res#1.base| (store .cse0 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2151)) .cse1 v_ArrVal_2155) |c_ULTIMATE.start_sll_create_#res#1.base|) 4) 8) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_#res#1.base| .cse2) .cse1 v_ArrVal_2154) |c_ULTIMATE.start_sll_create_#res#1.base|) 4)))))) (< |c_ULTIMATE.start_sll_create_#res#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_39|))) (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_39| Int)) (or (forall ((v_ArrVal_2151 Int) (v_ArrVal_2150 Int) (v_ArrVal_2155 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_#res#1.base| (store .cse0 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2151)) (select (store .cse4 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2150) .cse3) v_ArrVal_2155) |c_ULTIMATE.start_sll_create_#res#1.base|) 4) 4))) (< |c_ULTIMATE.start_sll_create_#res#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_39|))))) is different from false [2022-12-13 13:57:32,806 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base|)) (.cse2 (+ 4 |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) (.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|))) (and (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_39| Int)) (or (< |c_ULTIMATE.start_sll_create_~head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_39|) (forall ((v_ArrVal_2151 Int) (v_ArrVal_2150 Int) (v_ArrVal_2155 (Array Int Int))) (<= 0 (+ 4 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base| (store .cse0 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2151)) (select (store .cse1 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2150) .cse2) v_ArrVal_2155) |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4)))))) (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_39| Int)) (or (< |c_ULTIMATE.start_sll_create_~head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_39|) (forall ((v_ArrVal_2151 Int) (v_ArrVal_2150 Int) (v_ArrVal_2155 (Array Int Int)) (v_ArrVal_2154 (Array Int Int))) (let ((.cse4 (store .cse1 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2150))) (let ((.cse3 (select .cse4 .cse2))) (<= (+ 8 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base| (store .cse0 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2151)) .cse3 v_ArrVal_2155) |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4)) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~head~0#1.base| .cse4) .cse3 v_ArrVal_2154) |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4)))))))))) is different from false [2022-12-13 13:57:32,860 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_~new_head~0#1.base|)) (.cse4 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| 4))) (and (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_39| Int)) (or (< |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_39|) (forall ((v_ArrVal_2151 Int) (v_ArrVal_2150 Int) (v_ArrVal_2155 (Array Int Int)) (v_ArrVal_2154 (Array Int Int))) (let ((.cse2 (store .cse4 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2150))) (let ((.cse1 (select .cse2 .cse3))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_~new_head~0#1.base| (store .cse0 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2151)) .cse1 v_ArrVal_2155) |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) 4) 8) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base| .cse2) .cse1 v_ArrVal_2154) |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) 4)))))))) (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_39| Int)) (or (forall ((v_ArrVal_2151 Int) (v_ArrVal_2150 Int) (v_ArrVal_2155 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_~new_head~0#1.base| (store .cse0 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2151)) (select (store .cse4 |v_ULTIMATE.start_sll_update_at_~head#1.offset_39| v_ArrVal_2150) .cse3) v_ArrVal_2155) |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) 4) 4))) (< |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_39|))))) is different from false [2022-12-13 13:57:32,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:57:32,878 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:57:32,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 81 [2022-12-13 13:57:32,885 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:57:32,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 60 [2022-12-13 13:57:32,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:57:32,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:57:32,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:57:32,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 40 [2022-12-13 13:57:32,903 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:57:32,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 52 [2022-12-13 13:57:32,911 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:57:32,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 78 [2022-12-13 13:57:32,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-12-13 13:57:32,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2022-12-13 13:57:32,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:57:32,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:57:32,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 45 [2022-12-13 13:57:32,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-12-13 13:57:32,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:57:32,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:57:32,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:57:32,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 10 [2022-12-13 13:57:39,362 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 27 DAG size of output: 24 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:57:43,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-12-13 13:57:43,869 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 12 not checked. [2022-12-13 13:57:43,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486294824] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:57:43,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:57:43,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25, 24] total 76 [2022-12-13 13:57:43,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058155684] [2022-12-13 13:57:43,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:57:43,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-12-13 13:57:43,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:43,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-12-13 13:57:43,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=4311, Unknown=9, NotChecked=1260, Total=5852 [2022-12-13 13:57:43,871 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 77 states, 76 states have (on average 2.3289473684210527) internal successors, (177), 77 states have internal predecessors, (177), 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 13:57:57,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:57:57,884 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2022-12-13 13:57:57,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 13:57:57,884 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 2.3289473684210527) internal successors, (177), 77 states have internal predecessors, (177), 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 65 [2022-12-13 13:57:57,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:57:57,884 INFO L225 Difference]: With dead ends: 90 [2022-12-13 13:57:57,884 INFO L226 Difference]: Without dead ends: 90 [2022-12-13 13:57:57,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=1139, Invalid=8786, Unknown=11, NotChecked=1836, Total=11772 [2022-12-13 13:57:57,885 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 493 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 2727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 680 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:57:57,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 857 Invalid, 2727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2014 Invalid, 2 Unknown, 680 Unchecked, 1.2s Time] [2022-12-13 13:57:57,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-12-13 13:57:57,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 80. [2022-12-13 13:57:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 79 states have internal predecessors, (82), 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 13:57:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2022-12-13 13:57:57,887 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 65 [2022-12-13 13:57:57,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:57:57,887 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2022-12-13 13:57:57,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 2.3289473684210527) internal successors, (177), 77 states have internal predecessors, (177), 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 13:57:57,887 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2022-12-13 13:57:57,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 13:57:57,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:57,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:57,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 13:57:58,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-12-13 13:57:58,088 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:57:58,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:58,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1642891397, now seen corresponding path program 1 times [2022-12-13 13:57:58,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:58,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596436140] [2022-12-13 13:57:58,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:58,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 13:57:58,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:58,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596436140] [2022-12-13 13:57:58,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596436140] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:58,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646268426] [2022-12-13 13:57:58,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:58,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:58,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:58,514 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:58,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 13:57:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:58,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-13 13:57:58,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:58,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:57:59,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:57:59,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 41 [2022-12-13 13:57:59,682 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 13:57:59,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 56 [2022-12-13 13:57:59,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:57:59,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-12-13 13:58:00,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:00,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 56 [2022-12-13 13:58:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 13:58:00,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:02,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:02,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 38 [2022-12-13 13:58:02,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:58:02,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:58:02,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:58:02,587 INFO L321 Elim1Store]: treesize reduction 14, result has 70.8 percent of original size [2022-12-13 13:58:02,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 66 [2022-12-13 13:58:02,612 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-12-13 13:58:02,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 80 [2022-12-13 13:58:02,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-12-13 13:58:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 1 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 13:58:03,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646268426] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:03,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:58:03,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 25] total 65 [2022-12-13 13:58:03,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888131867] [2022-12-13 13:58:03,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:03,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-12-13 13:58:03,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:03,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-12-13 13:58:03,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=3909, Unknown=41, NotChecked=0, Total=4160 [2022-12-13 13:58:03,562 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 65 states, 65 states have (on average 2.6769230769230767) internal successors, (174), 65 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:26,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:26,225 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2022-12-13 13:58:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-13 13:58:26,225 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.6769230769230767) internal successors, (174), 65 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-13 13:58:26,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:26,225 INFO L225 Difference]: With dead ends: 138 [2022-12-13 13:58:26,226 INFO L226 Difference]: Without dead ends: 138 [2022-12-13 13:58:26,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=1381, Invalid=12126, Unknown=65, NotChecked=0, Total=13572 [2022-12-13 13:58:26,227 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1388 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 72 mSolverCounterUnsat, 106 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 106 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:26,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 1050 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1603 Invalid, 106 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 13:58:26,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-13 13:58:26,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 80. [2022-12-13 13:58:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.08) internal successors, (81), 79 states have internal predecessors, (81), 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 13:58:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2022-12-13 13:58:26,230 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 66 [2022-12-13 13:58:26,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:26,230 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2022-12-13 13:58:26,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.6769230769230767) internal successors, (174), 65 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2022-12-13 13:58:26,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 13:58:26,231 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:26,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-12-13 13:58:26,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 13:58:26,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:26,432 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:58:26,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:26,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1727882938, now seen corresponding path program 1 times [2022-12-13 13:58:26,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:26,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873888323] [2022-12-13 13:58:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:26,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 13:58:27,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:27,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873888323] [2022-12-13 13:58:27,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873888323] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:27,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309450930] [2022-12-13 13:58:27,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:27,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:27,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:27,602 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:27,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 13:58:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:27,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-13 13:58:27,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:27,737 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 13:58:27,858 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:58:27,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 13:58:27,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:58:28,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:58:28,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2022-12-13 13:58:28,340 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 13:58:28,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-12-13 13:58:28,465 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:28,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2022-12-13 13:58:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 13:58:28,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:28,887 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2381 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_#t~mem10#1.base| v_ArrVal_2381) |c_ULTIMATE.start_main_~s~0#1.base|) 4) |c_#StackHeapBarrier|)) is different from false [2022-12-13 13:58:28,893 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2381 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_sll_update_at_~head#1.offset| 4)) v_ArrVal_2381) |c_ULTIMATE.start_main_~s~0#1.base|) 4) |c_#StackHeapBarrier|)) is different from false [2022-12-13 13:58:28,900 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2381 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_2381) |c_ULTIMATE.start_main_~s~0#1.base|) 4) |c_#StackHeapBarrier|)) is different from false [2022-12-13 13:58:28,909 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2379 Int) (v_ArrVal_2381 (Array Int Int))) (< (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) |c_ULTIMATE.start_sll_update_at_~head#1.offset| v_ArrVal_2379)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_2381)) |c_ULTIMATE.start_main_~s~0#1.base|) 4) |c_#StackHeapBarrier|)) is different from false [2022-12-13 13:58:29,339 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2379 Int) (|v_ULTIMATE.start_sll_update_at_~head#1.offset_45| Int) (v_ArrVal_2381 (Array Int Int))) (or (< (select (select (let ((.cse0 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_45| v_ArrVal_2379))) (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~head~0#1.base| .cse0) (select .cse0 (+ 4 |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) v_ArrVal_2381)) |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_sll_create_~head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_45|))) is different from false [2022-12-13 13:58:29,622 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:29,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 37 [2022-12-13 13:58:29,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:58:29,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:58:29,633 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:29,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2022-12-13 13:58:29,639 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:29,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-13 13:58:29,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 13:58:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 10 not checked. [2022-12-13 13:58:29,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309450930] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:29,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:58:29,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 22, 23] total 62 [2022-12-13 13:58:29,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682031856] [2022-12-13 13:58:29,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:29,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-13 13:58:29,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:29,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-13 13:58:29,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=3060, Unknown=82, NotChecked=580, Total=3906 [2022-12-13 13:58:29,920 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 63 states, 62 states have (on average 2.661290322580645) internal successors, (165), 63 states have internal predecessors, (165), 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 13:58:35,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:35,100 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2022-12-13 13:58:35,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 13:58:35,101 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.661290322580645) internal successors, (165), 63 states have internal predecessors, (165), 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 68 [2022-12-13 13:58:35,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:35,101 INFO L225 Difference]: With dead ends: 88 [2022-12-13 13:58:35,101 INFO L226 Difference]: Without dead ends: 88 [2022-12-13 13:58:35,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 91 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1018, Invalid=6576, Unknown=82, NotChecked=880, Total=8556 [2022-12-13 13:58:35,102 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1033 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 37 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:35,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 772 Invalid, 1805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1387 Invalid, 27 Unknown, 354 Unchecked, 1.1s Time] [2022-12-13 13:58:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-12-13 13:58:35,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2022-12-13 13:58:35,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 80 states have internal predecessors, (82), 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 13:58:35,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-12-13 13:58:35,103 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 68 [2022-12-13 13:58:35,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:35,103 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-12-13 13:58:35,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.661290322580645) internal successors, (165), 63 states have internal predecessors, (165), 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 13:58:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-12-13 13:58:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 13:58:35,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:35,104 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-12-13 13:58:35,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 13:58:35,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 13:58:35,305 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2022-12-13 13:58:35,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash -177401856, now seen corresponding path program 2 times [2022-12-13 13:58:35,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:35,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949640660] [2022-12-13 13:58:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:35,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 13:58:36,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:36,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949640660] [2022-12-13 13:58:36,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949640660] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:36,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486114108] [2022-12-13 13:58:36,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:58:36,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:36,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:36,817 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:36,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21c91465-bb49-40b8-978a-23373f68043b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 13:58:36,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:58:36,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:36,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 135 conjunts are in the unsatisfiable core [2022-12-13 13:58:36,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:36,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:58:36,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:58:37,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-13 13:58:37,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-13 13:58:37,212 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 13:58:37,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:58:37,224 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 13:58:37,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:58:37,351 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:58:37,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 13:58:37,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:58:37,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:58:37,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-13 13:58:37,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 13:58:37,599 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 13:58:37,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 34 [2022-12-13 13:58:37,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 13:58:38,250 INFO L321 Elim1Store]: treesize reduction 100, result has 42.2 percent of original size [2022-12-13 13:58:38,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 120 [2022-12-13 13:58:38,279 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-12-13 13:58:38,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 54 [2022-12-13 13:58:39,443 INFO L321 Elim1Store]: treesize reduction 150, result has 52.5 percent of original size [2022-12-13 13:58:39,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 139 treesize of output 254 [2022-12-13 13:58:39,538 INFO L321 Elim1Store]: treesize reduction 92, result has 52.3 percent of original size [2022-12-13 13:58:39,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 179 treesize of output 230 [2022-12-13 13:59:08,523 INFO L321 Elim1Store]: treesize reduction 56, result has 65.2 percent of original size [2022-12-13 13:59:08,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 130 treesize of output 200 [2022-12-13 13:59:08,611 INFO L321 Elim1Store]: treesize reduction 52, result has 63.1 percent of original size [2022-12-13 13:59:08,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 150 treesize of output 183 [2022-12-13 13:59:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 13:59:11,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:59:34,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:34,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1028 treesize of output 1046 [2022-12-13 13:59:39,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:59:39,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:59:40,721 INFO L321 Elim1Store]: treesize reduction 291, result has 23.0 percent of original size [2022-12-13 13:59:40,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 88313773 treesize of output 85858247