./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7ede4537c48caea37472e4c8ac2076bad2737918f5afe1a2cfd1e12976491d8e --- 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-b5237d8 [2022-11-21 17:04:46,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:04:46,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:04:46,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:04:46,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:04:46,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:04:46,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:04:46,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:04:46,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:04:46,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:04:46,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:04:46,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:04:46,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:04:46,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:04:46,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:04:46,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:04:46,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:04:46,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:04:46,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:04:46,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:04:46,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:04:46,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:04:46,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:04:46,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:04:46,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:04:46,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:04:46,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:04:46,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:04:46,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:04:46,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:04:46,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:04:46,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:04:46,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:04:46,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:04:46,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:04:46,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:04:46,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:04:46,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:04:46,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:04:46,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:04:46,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:04:46,484 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 17:04:46,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:04:46,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:04:46,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:04:46,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:04:46,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:04:46,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:04:46,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:04:46,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:04:46,509 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:04:46,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:04:46,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:04:46,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:04:46,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:04:46,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:04:46,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:04:46,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:04:46,512 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:04:46,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:04:46,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:04:46,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:04:46,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:04:46,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:04:46,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:04:46,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:04:46,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:04:46,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:04:46,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:04:46,515 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:04:46,515 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:04:46,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:04:46,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ede4537c48caea37472e4c8ac2076bad2737918f5afe1a2cfd1e12976491d8e [2022-11-21 17:04:46,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:04:46,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:04:46,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:04:46,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:04:46,825 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:04:46,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2022-11-21 17:04:49,989 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:04:50,619 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:04:50,620 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2022-11-21 17:04:50,663 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/data/a1fc1172e/b906fd10b94b49d5a530f3930be9eb1a/FLAGf624c9c3a [2022-11-21 17:04:50,682 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/data/a1fc1172e/b906fd10b94b49d5a530f3930be9eb1a [2022-11-21 17:04:50,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:04:50,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:04:50,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:04:50,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:04:50,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:04:50,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:04:50" (1/1) ... [2022-11-21 17:04:50,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7564bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:50, skipping insertion in model container [2022-11-21 17:04:50,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:04:50" (1/1) ... [2022-11-21 17:04:50,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:04:50,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:04:51,546 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5957] [2022-11-21 17:04:51,547 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5958-5959] [2022-11-21 17:04:51,798 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_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i[182958,182971] [2022-11-21 17:04:52,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:04:52,922 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:04:53,032 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5957] [2022-11-21 17:04:53,032 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5958-5959] [2022-11-21 17:04:53,045 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_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i[182958,182971] [2022-11-21 17:04:53,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:04:53,423 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:04:53,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53 WrapperNode [2022-11-21 17:04:53,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:04:53,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:04:53,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:04:53,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:04:53,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53" (1/1) ... [2022-11-21 17:04:53,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53" (1/1) ... [2022-11-21 17:04:53,699 INFO L138 Inliner]: procedures = 219, calls = 1605, calls flagged for inlining = 116, calls inlined = 113, statements flattened = 3083 [2022-11-21 17:04:53,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:04:53,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:04:53,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:04:53,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:04:53,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53" (1/1) ... [2022-11-21 17:04:53,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53" (1/1) ... [2022-11-21 17:04:53,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53" (1/1) ... [2022-11-21 17:04:53,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53" (1/1) ... [2022-11-21 17:04:53,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53" (1/1) ... [2022-11-21 17:04:53,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53" (1/1) ... [2022-11-21 17:04:53,857 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53" (1/1) ... [2022-11-21 17:04:53,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53" (1/1) ... [2022-11-21 17:04:53,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:04:53,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:04:53,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:04:53,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:04:53,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53" (1/1) ... [2022-11-21 17:04:53,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:04:53,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:04:53,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:04:53,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:04:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-21 17:04:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-21 17:04:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-21 17:04:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-21 17:04:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-21 17:04:53,978 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-21 17:04:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-21 17:04:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-21 17:04:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-21 17:04:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-21 17:04:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-21 17:04:53,979 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-21 17:04:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-21 17:04:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-21 17:04:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-21 17:04:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-21 17:04:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-21 17:04:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-21 17:04:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 17:04:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 17:04:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-21 17:04:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-21 17:04:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-21 17:04:53,981 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-21 17:04:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-21 17:04:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-21 17:04:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:04:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_port_read_long [2022-11-21 17:04:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_port_read_long [2022-11-21 17:04:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 17:04:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-21 17:04:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-21 17:04:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-21 17:04:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-21 17:04:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:04:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-21 17:04:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-21 17:04:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 17:04:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_adap_init [2022-11-21 17:04:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_adap_init [2022-11-21 17:04:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-21 17:04:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-21 17:04:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_int_common [2022-11-21 17:04:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_int_common [2022-11-21 17:04:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-21 17:04:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-21 17:04:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-21 17:04:53,985 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-21 17:04:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-21 17:04:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-21 17:04:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_rcv_flush [2022-11-21 17:04:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_rcv_flush [2022-11-21 17:04:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_get_stats [2022-11-21 17:04:53,986 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_get_stats [2022-11-21 17:04:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-21 17:04:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-21 17:04:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_update_cam [2022-11-21 17:04:53,987 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_update_cam [2022-11-21 17:04:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-21 17:04:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-21 17:04:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-21 17:04:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_hw_dma_cmd_req [2022-11-21 17:04:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_hw_dma_cmd_req [2022-11-21 17:04:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_hw_dma_uninit [2022-11-21 17:04:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_hw_dma_uninit [2022-11-21 17:04:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-21 17:04:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-21 17:04:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-21 17:04:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-21 17:04:53,990 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-21 17:04:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-21 17:04:53,990 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-21 17:04:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:04:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure my_skb_align [2022-11-21 17:04:53,991 INFO L138 BoogieDeclarations]: Found implementation of procedure my_skb_align [2022-11-21 17:04:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-21 17:04:53,991 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-21 17:04:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-21 17:04:53,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-21 17:04:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_port_write_long [2022-11-21 17:04:53,992 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_port_write_long [2022-11-21 17:04:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-21 17:04:53,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-21 17:04:53,993 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-21 17:04:53,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-21 17:04:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-21 17:04:53,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-21 17:04:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:04:53,994 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-21 17:04:53,995 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-21 17:04:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-21 17:04:53,995 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-21 17:04:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-21 17:04:53,995 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-21 17:04:53,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-21 17:04:53,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-21 17:04:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:04:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-21 17:04:53,996 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-21 17:04:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_hw_port_ctrl_req [2022-11-21 17:04:53,996 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_hw_port_ctrl_req [2022-11-21 17:04:53,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:04:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_xmt_flush [2022-11-21 17:04:53,997 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_xmt_flush [2022-11-21 17:04:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-21 17:04:53,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-21 17:04:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 17:04:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_update_filters [2022-11-21 17:04:53,998 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_update_filters [2022-11-21 17:04:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-21 17:04:53,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-21 17:04:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_set_mac_address [2022-11-21 17:04:53,998 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_set_mac_address [2022-11-21 17:04:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_ctl_set_multicast_list [2022-11-21 17:04:54,000 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_ctl_set_multicast_list [2022-11-21 17:04:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_hw_adap_state_rd [2022-11-21 17:04:54,003 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_hw_adap_state_rd [2022-11-21 17:04:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-21 17:04:54,004 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-21 17:04:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-21 17:04:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-21 17:04:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-21 17:04:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-21 17:04:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:04:54,012 INFO L130 BoogieDeclarations]: Found specification of procedure dfx_get_bars [2022-11-21 17:04:54,013 INFO L138 BoogieDeclarations]: Found implementation of procedure dfx_get_bars [2022-11-21 17:04:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-21 17:04:54,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-21 17:04:54,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:04:54,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:04:54,829 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:04:54,831 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:04:55,791 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-21 17:05:10,744 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:05:10,776 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:05:10,776 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 17:05:10,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:05:10 BoogieIcfgContainer [2022-11-21 17:05:10,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:05:10,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:05:10,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:05:10,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:05:10,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:04:50" (1/3) ... [2022-11-21 17:05:10,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5967473f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:05:10, skipping insertion in model container [2022-11-21 17:05:10,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:53" (2/3) ... [2022-11-21 17:05:10,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5967473f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:05:10, skipping insertion in model container [2022-11-21 17:05:10,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:05:10" (3/3) ... [2022-11-21 17:05:10,792 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2022-11-21 17:05:10,812 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:05:10,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:05:10,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:05:10,924 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@57b1ac0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:05:10,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:05:10,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 1147 states, 810 states have (on average 1.3222222222222222) internal successors, (1071), 833 states have internal predecessors, (1071), 279 states have call successors, (279), 57 states have call predecessors, (279), 56 states have return successors, (273), 273 states have call predecessors, (273), 273 states have call successors, (273) [2022-11-21 17:05:10,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-21 17:05:10,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:10,980 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:05:10,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:10,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash 729120917, now seen corresponding path program 1 times [2022-11-21 17:05:11,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:11,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418903844] [2022-11-21 17:05:11,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:11,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:11,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:05:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:11,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:05:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:11,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:05:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:11,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 17:05:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:12,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 17:05:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:12,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 17:05:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:12,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:05:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:12,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 17:05:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:12,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 17:05:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:12,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 17:05:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:05:12,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:12,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418903844] [2022-11-21 17:05:12,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418903844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:12,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:12,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:05:12,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427313190] [2022-11-21 17:05:12,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:12,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:05:12,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:12,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:05:12,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:05:12,146 INFO L87 Difference]: Start difference. First operand has 1147 states, 810 states have (on average 1.3222222222222222) internal successors, (1071), 833 states have internal predecessors, (1071), 279 states have call successors, (279), 57 states have call predecessors, (279), 56 states have return successors, (273), 273 states have call predecessors, (273), 273 states have call successors, (273) Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:05:16,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:18,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:19,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:21,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:23,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:26,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:34,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:40,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:42,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:44,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:46,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:48,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:50,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:56,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:05:59,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:06:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:03,819 INFO L93 Difference]: Finished difference Result 3662 states and 5400 transitions. [2022-11-21 17:06:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:06:03,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-21 17:06:03,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:03,857 INFO L225 Difference]: With dead ends: 3662 [2022-11-21 17:06:03,857 INFO L226 Difference]: Without dead ends: 2480 [2022-11-21 17:06:03,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:06:03,882 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 3857 mSDsluCounter, 2972 mSDsCounter, 0 mSdLazyCounter, 7142 mSolverCounterSat, 2511 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4153 SdHoareTripleChecker+Valid, 3823 SdHoareTripleChecker+Invalid, 9663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2511 IncrementalHoareTripleChecker+Valid, 7142 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:03,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4153 Valid, 3823 Invalid, 9663 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2511 Valid, 7142 Invalid, 10 Unknown, 0 Unchecked, 50.6s Time] [2022-11-21 17:06:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-11-21 17:06:04,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2190. [2022-11-21 17:06:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2190 states, 1553 states have (on average 1.3116548615582744) internal successors, (2037), 1585 states have internal predecessors, (2037), 525 states have call successors, (525), 112 states have call predecessors, (525), 111 states have return successors, (529), 522 states have call predecessors, (529), 524 states have call successors, (529) [2022-11-21 17:06:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 3091 transitions. [2022-11-21 17:06:04,196 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 3091 transitions. Word has length 99 [2022-11-21 17:06:04,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:04,197 INFO L495 AbstractCegarLoop]: Abstraction has 2190 states and 3091 transitions. [2022-11-21 17:06:04,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:06:04,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 3091 transitions. [2022-11-21 17:06:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-21 17:06:04,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:04,210 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:04,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:06:04,211 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:04,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1250467517, now seen corresponding path program 1 times [2022-11-21 17:06:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:04,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187671643] [2022-11-21 17:06:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:04,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:04,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:06:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:04,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:06:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:04,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:06:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 17:06:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:04,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 17:06:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:04,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 17:06:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:06:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:04,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 17:06:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:04,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 17:06:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:04,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:06:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:06:04,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:04,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187671643] [2022-11-21 17:06:04,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187671643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:04,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:04,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:06:04,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140212960] [2022-11-21 17:06:04,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:04,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:06:04,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:04,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:06:04,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:06:04,865 INFO L87 Difference]: Start difference. First operand 2190 states and 3091 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:06:08,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:06:11,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:06:19,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:06:26,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:06:30,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:06:31,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:06:34,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:06:40,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:06:41,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:41,994 INFO L93 Difference]: Finished difference Result 7041 states and 10195 transitions. [2022-11-21 17:06:41,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:06:41,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2022-11-21 17:06:41,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:42,025 INFO L225 Difference]: With dead ends: 7041 [2022-11-21 17:06:42,026 INFO L226 Difference]: Without dead ends: 4860 [2022-11-21 17:06:42,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:06:42,039 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 3681 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 7497 mSolverCounterSat, 2400 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3975 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 9902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2400 IncrementalHoareTripleChecker+Valid, 7497 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:42,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3975 Valid, 3708 Invalid, 9902 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2400 Valid, 7497 Invalid, 5 Unknown, 0 Unchecked, 36.1s Time] [2022-11-21 17:06:42,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2022-11-21 17:06:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4273. [2022-11-21 17:06:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4273 states, 3033 states have (on average 1.311572700296736) internal successors, (3978), 3102 states have internal predecessors, (3978), 1018 states have call successors, (1018), 224 states have call predecessors, (1018), 221 states have return successors, (1031), 1006 states have call predecessors, (1031), 1017 states have call successors, (1031) [2022-11-21 17:06:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 6027 transitions. [2022-11-21 17:06:42,393 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 6027 transitions. Word has length 93 [2022-11-21 17:06:42,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:42,393 INFO L495 AbstractCegarLoop]: Abstraction has 4273 states and 6027 transitions. [2022-11-21 17:06:42,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:06:42,394 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 6027 transitions. [2022-11-21 17:06:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-21 17:06:42,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:42,403 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:42,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:06:42,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:42,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:42,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1543191653, now seen corresponding path program 1 times [2022-11-21 17:06:42,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:42,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980087810] [2022-11-21 17:06:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:42,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:42,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:06:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:06:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:42,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:06:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:42,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-21 17:06:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:42,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:06:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:42,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 17:06:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:42,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:06:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:42,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 17:06:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:42,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:06:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:06:42,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:42,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980087810] [2022-11-21 17:06:42,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980087810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:42,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:42,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:06:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550924067] [2022-11-21 17:06:42,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:42,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:06:42,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:42,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:06:42,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:06:42,948 INFO L87 Difference]: Start difference. First operand 4273 states and 6027 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-21 17:06:46,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:06:54,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:01,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:08,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:15,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:16,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:17,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:17,378 INFO L93 Difference]: Finished difference Result 13872 states and 20045 transitions. [2022-11-21 17:07:17,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:07:17,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2022-11-21 17:07:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:17,434 INFO L225 Difference]: With dead ends: 13872 [2022-11-21 17:07:17,434 INFO L226 Difference]: Without dead ends: 9608 [2022-11-21 17:07:17,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:07:17,457 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 3662 mSDsluCounter, 2872 mSDsCounter, 0 mSdLazyCounter, 7549 mSolverCounterSat, 2394 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3955 SdHoareTripleChecker+Valid, 3705 SdHoareTripleChecker+Invalid, 9947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2394 IncrementalHoareTripleChecker+Valid, 7549 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:17,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3955 Valid, 3705 Invalid, 9947 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2394 Valid, 7549 Invalid, 4 Unknown, 0 Unchecked, 33.4s Time] [2022-11-21 17:07:17,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9608 states. [2022-11-21 17:07:17,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9608 to 8455. [2022-11-21 17:07:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8455 states, 6009 states have (on average 1.310700615743052) internal successors, (7876), 6143 states have internal predecessors, (7876), 2003 states have call successors, (2003), 449 states have call predecessors, (2003), 442 states have return successors, (2038), 1982 states have call predecessors, (2038), 2002 states have call successors, (2038) [2022-11-21 17:07:18,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8455 states to 8455 states and 11917 transitions. [2022-11-21 17:07:18,037 INFO L78 Accepts]: Start accepts. Automaton has 8455 states and 11917 transitions. Word has length 93 [2022-11-21 17:07:18,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:18,038 INFO L495 AbstractCegarLoop]: Abstraction has 8455 states and 11917 transitions. [2022-11-21 17:07:18,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-21 17:07:18,039 INFO L276 IsEmpty]: Start isEmpty. Operand 8455 states and 11917 transitions. [2022-11-21 17:07:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-21 17:07:18,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:18,046 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:18,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:07:18,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:18,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:18,048 INFO L85 PathProgramCache]: Analyzing trace with hash 263571810, now seen corresponding path program 1 times [2022-11-21 17:07:18,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:18,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141508486] [2022-11-21 17:07:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:18,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:07:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:07:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:18,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:07:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:18,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:07:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:18,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 17:07:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 17:07:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:07:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 17:07:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:18,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:07:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:07:18,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:18,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141508486] [2022-11-21 17:07:18,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141508486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:18,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:18,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:07:18,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132500005] [2022-11-21 17:07:18,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:18,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:07:18,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:18,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:07:18,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:07:18,500 INFO L87 Difference]: Start difference. First operand 8455 states and 11917 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-21 17:07:22,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:28,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:35,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:37,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:39,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:41,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:42,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:44,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:48,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:51,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:54,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:07:55,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:08:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:08:01,165 INFO L93 Difference]: Finished difference Result 27333 states and 39406 transitions. [2022-11-21 17:08:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:08:01,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2022-11-21 17:08:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:08:01,276 INFO L225 Difference]: With dead ends: 27333 [2022-11-21 17:08:01,277 INFO L226 Difference]: Without dead ends: 18887 [2022-11-21 17:08:01,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:08:01,322 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 3644 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 7613 mSolverCounterSat, 2388 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3936 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 10006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2388 IncrementalHoareTripleChecker+Valid, 7613 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:08:01,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3936 Valid, 3683 Invalid, 10006 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2388 Valid, 7613 Invalid, 5 Unknown, 0 Unchecked, 41.3s Time] [2022-11-21 17:08:01,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18887 states. [2022-11-21 17:08:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18887 to 16657. [2022-11-21 17:08:02,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16657 states, 11852 states have (on average 1.3095680053999326) internal successors, (15521), 12110 states have internal predecessors, (15521), 3923 states have call successors, (3923), 896 states have call predecessors, (3923), 881 states have return successors, (4010), 3886 states have call predecessors, (4010), 3922 states have call successors, (4010) [2022-11-21 17:08:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16657 states to 16657 states and 23454 transitions. [2022-11-21 17:08:02,621 INFO L78 Accepts]: Start accepts. Automaton has 16657 states and 23454 transitions. Word has length 95 [2022-11-21 17:08:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:08:02,621 INFO L495 AbstractCegarLoop]: Abstraction has 16657 states and 23454 transitions. [2022-11-21 17:08:02,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-21 17:08:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 16657 states and 23454 transitions. [2022-11-21 17:08:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-21 17:08:02,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:08:02,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:08:02,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:08:02,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:08:02,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:08:02,638 INFO L85 PathProgramCache]: Analyzing trace with hash 381393399, now seen corresponding path program 1 times [2022-11-21 17:08:02,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:08:02,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190511589] [2022-11-21 17:08:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:02,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:08:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:08:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:03,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:08:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:08:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:03,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 17:08:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 17:08:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:03,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:08:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:03,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 17:08:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:03,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:08:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:03,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 17:08:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:03,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 17:08:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 17:08:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 17:08:03,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:08:03,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190511589] [2022-11-21 17:08:03,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190511589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:08:03,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939134192] [2022-11-21 17:08:03,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:03,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:08:03,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:08:03,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:08:03,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:08:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:04,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1614 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:08:04,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:08:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-21 17:08:04,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:08:04,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939134192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:08:04,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:08:04,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-11-21 17:08:04,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364621430] [2022-11-21 17:08:04,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:08:04,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:08:04,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:08:04,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:08:04,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:08:04,602 INFO L87 Difference]: Start difference. First operand 16657 states and 23454 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:08:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:08:05,485 INFO L93 Difference]: Finished difference Result 33170 states and 46690 transitions. [2022-11-21 17:08:05,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:08:05,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-11-21 17:08:05,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:08:05,633 INFO L225 Difference]: With dead ends: 33170 [2022-11-21 17:08:05,633 INFO L226 Difference]: Without dead ends: 16522 [2022-11-21 17:08:05,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:08:05,702 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 13 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:08:05,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3122 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:08:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16522 states. [2022-11-21 17:08:06,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16522 to 16492. [2022-11-21 17:08:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16492 states, 11792 states have (on average 1.3085990502035278) internal successors, (15431), 12035 states have internal predecessors, (15431), 3818 states have call successors, (3818), 896 states have call predecessors, (3818), 881 states have return successors, (3905), 3781 states have call predecessors, (3905), 3817 states have call successors, (3905) [2022-11-21 17:08:06,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16492 states to 16492 states and 23154 transitions. [2022-11-21 17:08:06,873 INFO L78 Accepts]: Start accepts. Automaton has 16492 states and 23154 transitions. Word has length 105 [2022-11-21 17:08:06,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:08:06,875 INFO L495 AbstractCegarLoop]: Abstraction has 16492 states and 23154 transitions. [2022-11-21 17:08:06,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:08:06,876 INFO L276 IsEmpty]: Start isEmpty. Operand 16492 states and 23154 transitions. [2022-11-21 17:08:06,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-21 17:08:06,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:08:06,887 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:08:06,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:08:07,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:08:07,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:08:07,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:08:07,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1291796753, now seen corresponding path program 1 times [2022-11-21 17:08:07,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:08:07,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613518815] [2022-11-21 17:08:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:07,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:08:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:08:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:07,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:08:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:07,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:08:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 17:08:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 17:08:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:07,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 17:08:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:08:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:08:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:07,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 17:08:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:07,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 17:08:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 17:08:07,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:08:07,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613518815] [2022-11-21 17:08:07,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613518815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:08:07,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103662718] [2022-11-21 17:08:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:07,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:08:07,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:08:07,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:08:07,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:08:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:08,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:08:08,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:08:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-21 17:08:08,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:08:08,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103662718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:08:08,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:08:08,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-11-21 17:08:08,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230913340] [2022-11-21 17:08:08,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:08:08,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:08:08,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:08:08,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:08:08,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:08:08,672 INFO L87 Difference]: Start difference. First operand 16492 states and 23154 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 17:08:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:08:09,376 INFO L93 Difference]: Finished difference Result 32915 states and 46210 transitions. [2022-11-21 17:08:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:08:09,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2022-11-21 17:08:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:08:09,468 INFO L225 Difference]: With dead ends: 32915 [2022-11-21 17:08:09,468 INFO L226 Difference]: Without dead ends: 16432 [2022-11-21 17:08:09,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:08:09,539 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 8 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:08:09,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 3106 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:08:09,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16432 states. [2022-11-21 17:08:10,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16432 to 16402. [2022-11-21 17:08:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16402 states, 11762 states have (on average 1.3068355721816018) internal successors, (15371), 11990 states have internal predecessors, (15371), 3758 states have call successors, (3758), 896 states have call predecessors, (3758), 881 states have return successors, (3845), 3721 states have call predecessors, (3845), 3757 states have call successors, (3845) [2022-11-21 17:08:10,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16402 states to 16402 states and 22974 transitions. [2022-11-21 17:08:10,704 INFO L78 Accepts]: Start accepts. Automaton has 16402 states and 22974 transitions. Word has length 104 [2022-11-21 17:08:10,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:08:10,704 INFO L495 AbstractCegarLoop]: Abstraction has 16402 states and 22974 transitions. [2022-11-21 17:08:10,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 17:08:10,705 INFO L276 IsEmpty]: Start isEmpty. Operand 16402 states and 22974 transitions. [2022-11-21 17:08:10,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-21 17:08:10,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:08:10,722 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:08:10,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:08:10,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:08:10,931 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:08:10,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:08:10,931 INFO L85 PathProgramCache]: Analyzing trace with hash 64902790, now seen corresponding path program 1 times [2022-11-21 17:08:10,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:08:10,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477562190] [2022-11-21 17:08:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:10,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:08:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:08:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:11,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:08:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:08:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 17:08:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 17:08:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 17:08:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:11,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 17:08:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:11,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:08:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:11,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 17:08:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:11,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:08:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 17:08:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-21 17:08:11,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:08:11,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477562190] [2022-11-21 17:08:11,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477562190] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:08:11,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559456809] [2022-11-21 17:08:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:11,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:08:11,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:08:11,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:08:11,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:08:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:12,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:08:12,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:08:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:08:12,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:08:12,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559456809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:08:12,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:08:12,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-21 17:08:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376113287] [2022-11-21 17:08:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:08:12,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:08:12,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:08:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:08:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:08:12,677 INFO L87 Difference]: Start difference. First operand 16402 states and 22974 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:08:14,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:08:14,254 INFO L93 Difference]: Finished difference Result 41142 states and 57622 transitions. [2022-11-21 17:08:14,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:08:14,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-11-21 17:08:14,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:08:14,365 INFO L225 Difference]: With dead ends: 41142 [2022-11-21 17:08:14,365 INFO L226 Difference]: Without dead ends: 24749 [2022-11-21 17:08:14,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:08:14,420 INFO L413 NwaCegarLoop]: 2205 mSDtfsCounter, 1579 mSDsluCounter, 10354 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 12559 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:08:14,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 12559 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:08:14,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24749 states. [2022-11-21 17:08:15,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24749 to 24600. [2022-11-21 17:08:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24600 states, 17649 states have (on average 1.3076661567227605) internal successors, (23079), 18001 states have internal predecessors, (23079), 5624 states have call successors, (5624), 1339 states have call predecessors, (5624), 1326 states have return successors, (5783), 5567 states have call predecessors, (5783), 5623 states have call successors, (5783) [2022-11-21 17:08:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24600 states to 24600 states and 34486 transitions. [2022-11-21 17:08:16,088 INFO L78 Accepts]: Start accepts. Automaton has 24600 states and 34486 transitions. Word has length 109 [2022-11-21 17:08:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:08:16,089 INFO L495 AbstractCegarLoop]: Abstraction has 24600 states and 34486 transitions. [2022-11-21 17:08:16,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:08:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 24600 states and 34486 transitions. [2022-11-21 17:08:16,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-21 17:08:16,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:08:16,109 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:08:16,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-21 17:08:16,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 17:08:16,318 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:08:16,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:08:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash -378192319, now seen corresponding path program 1 times [2022-11-21 17:08:16,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:08:16,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345276638] [2022-11-21 17:08:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:08:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:16,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:08:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:08:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:16,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:08:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:08:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:17,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 17:08:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:17,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:08:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:17,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 17:08:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:17,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:08:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:08:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 17:08:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 17:08:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:08:17,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:08:17,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345276638] [2022-11-21 17:08:17,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345276638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:08:17,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010971918] [2022-11-21 17:08:17,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:17,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:08:17,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:08:17,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:08:17,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:08:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:17,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:08:17,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:08:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:08:18,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:08:18,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010971918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:08:18,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:08:18,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-11-21 17:08:18,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361885197] [2022-11-21 17:08:18,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:08:18,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:08:18,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:08:18,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:08:18,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:08:18,200 INFO L87 Difference]: Start difference. First operand 24600 states and 34486 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:08:19,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:08:19,719 INFO L93 Difference]: Finished difference Result 57785 states and 80952 transitions. [2022-11-21 17:08:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:08:19,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-11-21 17:08:19,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:08:19,898 INFO L225 Difference]: With dead ends: 57785 [2022-11-21 17:08:19,898 INFO L226 Difference]: Without dead ends: 33194 [2022-11-21 17:08:20,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:08:20,186 INFO L413 NwaCegarLoop]: 2225 mSDtfsCounter, 1579 mSDsluCounter, 10422 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 12647 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:08:20,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 12647 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:08:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33194 states. [2022-11-21 17:08:22,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33194 to 33024. [2022-11-21 17:08:22,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33024 states, 23693 states have (on average 1.3076014012577555) internal successors, (30981), 24187 states have internal predecessors, (30981), 7533 states have call successors, (7533), 1794 states have call predecessors, (7533), 1797 states have return successors, (7776), 7452 states have call predecessors, (7776), 7532 states have call successors, (7776) [2022-11-21 17:08:22,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33024 states to 33024 states and 46290 transitions. [2022-11-21 17:08:22,344 INFO L78 Accepts]: Start accepts. Automaton has 33024 states and 46290 transitions. Word has length 110 [2022-11-21 17:08:22,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:08:22,344 INFO L495 AbstractCegarLoop]: Abstraction has 33024 states and 46290 transitions. [2022-11-21 17:08:22,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:08:22,345 INFO L276 IsEmpty]: Start isEmpty. Operand 33024 states and 46290 transitions. [2022-11-21 17:08:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-21 17:08:22,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:08:22,370 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:08:22,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:08:22,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:08:22,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:08:22,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:08:22,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1381092737, now seen corresponding path program 1 times [2022-11-21 17:08:22,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:08:22,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118214761] [2022-11-21 17:08:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:22,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:08:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:08:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:23,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:08:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:08:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:23,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:08:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 17:08:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:23,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 17:08:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:23,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:08:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:23,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:08:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 17:08:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:23,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:08:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:23,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 17:08:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:08:23,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:08:23,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118214761] [2022-11-21 17:08:23,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118214761] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:08:23,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632311384] [2022-11-21 17:08:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:23,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:08:23,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:08:23,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:08:23,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:08:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:24,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:08:24,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:08:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:08:24,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:08:24,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632311384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:08:24,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:08:24,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-11-21 17:08:24,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10581930] [2022-11-21 17:08:24,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:08:24,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:08:24,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:08:24,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:08:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:08:24,271 INFO L87 Difference]: Start difference. First operand 33024 states and 46290 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:08:26,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:08:26,476 INFO L93 Difference]: Finished difference Result 74428 states and 104282 transitions. [2022-11-21 17:08:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:08:26,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-11-21 17:08:26,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:08:26,678 INFO L225 Difference]: With dead ends: 74428 [2022-11-21 17:08:26,678 INFO L226 Difference]: Without dead ends: 41413 [2022-11-21 17:08:26,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:08:26,995 INFO L413 NwaCegarLoop]: 2225 mSDtfsCounter, 1579 mSDsluCounter, 10422 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 12647 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:08:26,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 12647 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:08:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41413 states. [2022-11-21 17:08:28,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41413 to 33046. [2022-11-21 17:08:28,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33046 states, 23709 states have (on average 1.3073938166940824) internal successors, (30997), 24205 states have internal predecessors, (30997), 7533 states have call successors, (7533), 1794 states have call predecessors, (7533), 1803 states have return successors, (7785), 7456 states have call predecessors, (7785), 7532 states have call successors, (7785) [2022-11-21 17:08:28,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33046 states to 33046 states and 46315 transitions. [2022-11-21 17:08:28,598 INFO L78 Accepts]: Start accepts. Automaton has 33046 states and 46315 transitions. Word has length 111 [2022-11-21 17:08:28,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:08:28,599 INFO L495 AbstractCegarLoop]: Abstraction has 33046 states and 46315 transitions. [2022-11-21 17:08:28,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:08:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 33046 states and 46315 transitions. [2022-11-21 17:08:28,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 17:08:28,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:08:28,623 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:08:28,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:08:28,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:08:28,832 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:08:28,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:08:28,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1736878746, now seen corresponding path program 1 times [2022-11-21 17:08:28,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:08:28,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716700214] [2022-11-21 17:08:28,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:28,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:08:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:29,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:08:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:29,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:08:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:29,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:08:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:29,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-21 17:08:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:29,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:08:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:29,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:08:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:29,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 17:08:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:29,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:08:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:29,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 17:08:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:29,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 17:08:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 17:08:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:08:29,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:08:29,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716700214] [2022-11-21 17:08:29,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716700214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:08:29,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88937772] [2022-11-21 17:08:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:29,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:08:29,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:08:29,620 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:08:29,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 17:08:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:30,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:08:30,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:08:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:08:30,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:08:30,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88937772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:08:30,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:08:30,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-11-21 17:08:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040926200] [2022-11-21 17:08:30,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:08:30,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:08:30,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:08:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:08:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:08:30,686 INFO L87 Difference]: Start difference. First operand 33046 states and 46315 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:08:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:08:32,864 INFO L93 Difference]: Finished difference Result 74458 states and 104315 transitions. [2022-11-21 17:08:32,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:08:32,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-11-21 17:08:32,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:08:33,023 INFO L225 Difference]: With dead ends: 74458 [2022-11-21 17:08:33,023 INFO L226 Difference]: Without dead ends: 41421 [2022-11-21 17:08:33,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:08:33,139 INFO L413 NwaCegarLoop]: 2223 mSDtfsCounter, 1579 mSDsluCounter, 10414 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 12637 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:08:33,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 12637 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:08:33,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41421 states. [2022-11-21 17:08:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41421 to 33059. [2022-11-21 17:08:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33059 states, 23719 states have (on average 1.3072642185589611) internal successors, (31007), 24214 states have internal predecessors, (31007), 7533 states have call successors, (7533), 1794 states have call predecessors, (7533), 1806 states have return successors, (7788), 7460 states have call predecessors, (7788), 7532 states have call successors, (7788) [2022-11-21 17:08:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33059 states to 33059 states and 46328 transitions. [2022-11-21 17:08:35,187 INFO L78 Accepts]: Start accepts. Automaton has 33059 states and 46328 transitions. Word has length 112 [2022-11-21 17:08:35,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:08:35,187 INFO L495 AbstractCegarLoop]: Abstraction has 33059 states and 46328 transitions. [2022-11-21 17:08:35,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:08:35,187 INFO L276 IsEmpty]: Start isEmpty. Operand 33059 states and 46328 transitions. [2022-11-21 17:08:35,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-21 17:08:35,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:08:35,211 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:08:35,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:08:35,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:08:35,421 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:08:35,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:08:35,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1493639812, now seen corresponding path program 1 times [2022-11-21 17:08:35,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:08:35,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324517645] [2022-11-21 17:08:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:35,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:08:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:35,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:08:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:35,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:08:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:35,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:08:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:35,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 17:08:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:35,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:08:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:35,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:08:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:35,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 17:08:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:35,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:08:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:35,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 17:08:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:35,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 17:08:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:35,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 17:08:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 17:08:35,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:08:35,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324517645] [2022-11-21 17:08:35,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324517645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:08:35,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:08:35,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:08:35,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037307772] [2022-11-21 17:08:35,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:08:35,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:08:35,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:08:35,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:08:35,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:08:35,728 INFO L87 Difference]: Start difference. First operand 33059 states and 46328 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:08:42,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:08:45,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:08:48,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:08:52,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:08:54,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:09:00,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:09:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:04,893 INFO L93 Difference]: Finished difference Result 97558 states and 138424 transitions. [2022-11-21 17:09:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:09:04,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 123 [2022-11-21 17:09:04,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:05,099 INFO L225 Difference]: With dead ends: 97558 [2022-11-21 17:09:05,099 INFO L226 Difference]: Without dead ends: 64508 [2022-11-21 17:09:05,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:09:05,183 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 3174 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 4302 mSolverCounterSat, 1955 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3410 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 6261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1955 IncrementalHoareTripleChecker+Valid, 4302 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:05,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3410 Valid, 2310 Invalid, 6261 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1955 Valid, 4302 Invalid, 4 Unknown, 0 Unchecked, 26.1s Time] [2022-11-21 17:09:05,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64508 states. [2022-11-21 17:09:07,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64508 to 56912. [2022-11-21 17:09:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56912 states, 41116 states have (on average 1.3069121509874502) internal successors, (53735), 42022 states have internal predecessors, (53735), 12452 states have call successors, (12452), 3294 states have call predecessors, (12452), 3343 states have return successors, (12771), 12275 states have call predecessors, (12771), 12451 states have call successors, (12771) [2022-11-21 17:09:08,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56912 states to 56912 states and 78958 transitions. [2022-11-21 17:09:08,203 INFO L78 Accepts]: Start accepts. Automaton has 56912 states and 78958 transitions. Word has length 123 [2022-11-21 17:09:08,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:08,203 INFO L495 AbstractCegarLoop]: Abstraction has 56912 states and 78958 transitions. [2022-11-21 17:09:08,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:09:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand 56912 states and 78958 transitions. [2022-11-21 17:09:08,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-21 17:09:08,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:08,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:09:08,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:09:08,208 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:09:08,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:08,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2028255067, now seen corresponding path program 1 times [2022-11-21 17:09:08,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:09:08,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285786930] [2022-11-21 17:09:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:08,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:09:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:09:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:09:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:09:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:09:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 17:09:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 17:09:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 17:09:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 17:09:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:09:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 17:09:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 17:09:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-21 17:09:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 17:09:08,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:09:08,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285786930] [2022-11-21 17:09:08,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285786930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:09:08,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845243897] [2022-11-21 17:09:08,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:08,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:09:08,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:09:08,866 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:09:08,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 17:09:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:09,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 17:09:09,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 17:09:10,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:09:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-21 17:09:10,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845243897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:09:10,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:09:10,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-11-21 17:09:10,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804266230] [2022-11-21 17:09:10,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:09:10,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:09:10,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:09:10,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:09:10,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:09:10,932 INFO L87 Difference]: Start difference. First operand 56912 states and 78958 transitions. Second operand has 23 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 15 states have internal predecessors, (153), 5 states have call successors, (35), 8 states have call predecessors, (35), 7 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2022-11-21 17:09:40,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:09:42,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:09:44,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:09:46,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:09:48,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:09:50,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:09:51,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:09:53,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:09:54,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:09:56,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:09:58,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:00,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:01,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:02,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:09,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:11,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:13,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:14,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:15,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:17,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:19,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:21,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:25,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:27,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:28,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:30,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:32,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:34,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:37,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:38,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:40,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:41,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:44,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:46,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:10:57,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:19,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:21,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:23,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:24,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:26,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:28,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:39,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:42,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:43,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:45,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:47,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:49,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:51,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:52,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:54,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:56,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:11:58,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:12:00,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:12:02,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:12:04,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:12:06,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:12:27,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:12:50,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:12:51,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:12:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:59,454 INFO L93 Difference]: Finished difference Result 183795 states and 262887 transitions. [2022-11-21 17:12:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-21 17:12:59,455 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 15 states have internal predecessors, (153), 5 states have call successors, (35), 8 states have call predecessors, (35), 7 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 124 [2022-11-21 17:12:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:00,165 INFO L225 Difference]: With dead ends: 183795 [2022-11-21 17:13:00,165 INFO L226 Difference]: Without dead ends: 126500 [2022-11-21 17:13:00,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 270 SyntacticMatches, 8 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7610 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2948, Invalid=17358, Unknown=0, NotChecked=0, Total=20306 [2022-11-21 17:13:00,338 INFO L413 NwaCegarLoop]: 2490 mSDtfsCounter, 12914 mSDsluCounter, 24293 mSDsCounter, 0 mSdLazyCounter, 55291 mSolverCounterSat, 7955 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 205.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13509 SdHoareTripleChecker+Valid, 26783 SdHoareTripleChecker+Invalid, 63277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 7955 IncrementalHoareTripleChecker+Valid, 55291 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 213.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:00,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13509 Valid, 26783 Invalid, 63277 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [7955 Valid, 55291 Invalid, 31 Unknown, 0 Unchecked, 213.2s Time] [2022-11-21 17:13:00,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126500 states. [2022-11-21 17:13:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126500 to 97896. [2022-11-21 17:13:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97896 states, 70728 states have (on average 1.3069364325302568) internal successors, (92437), 72282 states have internal predecessors, (92437), 21408 states have call successors, (21408), 5708 states have call predecessors, (21408), 5759 states have return successors, (21971), 21073 states have call predecessors, (21971), 21407 states have call successors, (21971) [2022-11-21 17:13:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97896 states to 97896 states and 135816 transitions. [2022-11-21 17:13:06,417 INFO L78 Accepts]: Start accepts. Automaton has 97896 states and 135816 transitions. Word has length 124 [2022-11-21 17:13:06,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:06,418 INFO L495 AbstractCegarLoop]: Abstraction has 97896 states and 135816 transitions. [2022-11-21 17:13:06,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 15 states have internal predecessors, (153), 5 states have call successors, (35), 8 states have call predecessors, (35), 7 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2022-11-21 17:13:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 97896 states and 135816 transitions. [2022-11-21 17:13:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-21 17:13:06,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:06,423 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:13:06,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 17:13:06,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:13:06,637 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:13:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1841100899, now seen corresponding path program 1 times [2022-11-21 17:13:06,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:13:06,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522174803] [2022-11-21 17:13:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:06,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:13:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:06,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:13:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:06,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:13:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:07,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:13:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 17:13:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:07,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:13:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:07,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 17:13:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:07,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 17:13:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 17:13:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:07,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 17:13:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:07,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 17:13:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 17:13:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:07,282 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 17:13:07,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:13:07,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522174803] [2022-11-21 17:13:07,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522174803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:13:07,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981811572] [2022-11-21 17:13:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:07,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:13:07,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:13:07,285 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:13:07,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 17:13:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:08,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 1795 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 17:13:08,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:13:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 17:13:08,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:13:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-21 17:13:09,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981811572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:13:09,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:13:09,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-11-21 17:13:09,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194820845] [2022-11-21 17:13:09,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:13:09,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:13:09,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:13:09,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:13:09,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:13:09,072 INFO L87 Difference]: Start difference. First operand 97896 states and 135816 transitions. Second operand has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 15 states have internal predecessors, (155), 5 states have call successors, (35), 8 states have call predecessors, (35), 7 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2022-11-21 17:13:37,937 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 [] [2022-11-21 17:13:57,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:14:27,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:14:29,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:14:51,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:14:53,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:15:00,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:15:12,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:15:23,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:15:23,072 INFO L93 Difference]: Finished difference Result 307318 states and 438510 transitions. [2022-11-21 17:15:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-21 17:15:23,073 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 15 states have internal predecessors, (155), 5 states have call successors, (35), 8 states have call predecessors, (35), 7 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 125 [2022-11-21 17:15:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:15:24,188 INFO L225 Difference]: With dead ends: 307318 [2022-11-21 17:15:24,188 INFO L226 Difference]: Without dead ends: 208787 [2022-11-21 17:15:24,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 272 SyntacticMatches, 8 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7768 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2948, Invalid=17358, Unknown=0, NotChecked=0, Total=20306 [2022-11-21 17:15:24,464 INFO L413 NwaCegarLoop]: 2430 mSDtfsCounter, 14069 mSDsluCounter, 24184 mSDsCounter, 0 mSdLazyCounter, 53682 mSolverCounterSat, 9441 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14656 SdHoareTripleChecker+Valid, 26614 SdHoareTripleChecker+Invalid, 63127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 9441 IncrementalHoareTripleChecker+Valid, 53682 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:15:24,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14656 Valid, 26614 Invalid, 63127 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [9441 Valid, 53682 Invalid, 4 Unknown, 0 Unchecked, 113.7s Time] [2022-11-21 17:15:24,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208787 states. [2022-11-21 17:15:33,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208787 to 163985. [2022-11-21 17:15:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163985 states, 118527 states have (on average 1.3070524015625131) internal successors, (154921), 121089 states have internal predecessors, (154921), 35800 states have call successors, (35800), 9628 states have call predecessors, (35800), 9657 states have return successors, (36653), 35219 states have call predecessors, (36653), 35799 states have call successors, (36653) [2022-11-21 17:15:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163985 states to 163985 states and 227374 transitions. [2022-11-21 17:15:35,127 INFO L78 Accepts]: Start accepts. Automaton has 163985 states and 227374 transitions. Word has length 125 [2022-11-21 17:15:35,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:15:35,127 INFO L495 AbstractCegarLoop]: Abstraction has 163985 states and 227374 transitions. [2022-11-21 17:15:35,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 15 states have internal predecessors, (155), 5 states have call successors, (35), 8 states have call predecessors, (35), 7 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2022-11-21 17:15:35,128 INFO L276 IsEmpty]: Start isEmpty. Operand 163985 states and 227374 transitions. [2022-11-21 17:15:35,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-21 17:15:35,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:15:35,135 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:35,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:15:35,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:15:35,349 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:15:35,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:35,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1636279614, now seen corresponding path program 1 times [2022-11-21 17:15:35,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:35,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284339460] [2022-11-21 17:15:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:35,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:35,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:15:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:35,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:15:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 17:15:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:35,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-21 17:15:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:35,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 17:15:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:15:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:35,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 17:15:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:36,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:15:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:36,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:15:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:36,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 17:15:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 17:15:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:36,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 17:15:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:36,063 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 17:15:36,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:36,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284339460] [2022-11-21 17:15:36,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284339460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:15:36,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199898071] [2022-11-21 17:15:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:36,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:15:36,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:15:36,066 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:15:36,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2a3cd93-6ac1-4940-bcac-3259eef8b6b7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 17:15:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:36,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1797 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 17:15:36,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:15:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 17:15:37,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:15:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-21 17:15:37,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199898071] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:15:37,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:15:37,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2022-11-21 17:15:37,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909512635] [2022-11-21 17:15:37,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:15:37,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:15:37,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:37,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:15:37,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:15:37,851 INFO L87 Difference]: Start difference. First operand 163985 states and 227374 transitions. Second operand has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 15 states have internal predecessors, (157), 5 states have call successors, (35), 8 states have call predecessors, (35), 7 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2022-11-21 17:16:00,909 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 [] [2022-11-21 17:16:23,486 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 []