./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:59:05,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:59:05,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:59:05,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:59:05,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:59:05,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:59:05,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:59:05,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:59:05,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:59:05,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:59:05,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:59:06,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:59:06,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:59:06,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:59:06,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:59:06,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:59:06,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:59:06,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:59:06,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:59:06,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:59:06,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:59:06,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:59:06,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:59:06,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:59:06,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:59:06,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:59:06,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:59:06,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:59:06,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:59:06,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:59:06,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:59:06,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:59:06,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:59:06,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:59:06,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:59:06,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:59:06,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:59:06,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:59:06,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:59:06,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:59:06,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:59:06,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:59:06,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:59:06,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:59:06,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:59:06,142 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:59:06,143 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:59:06,143 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:59:06,143 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:59:06,144 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:59:06,144 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:59:06,144 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:59:06,146 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:59:06,146 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:59:06,147 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:59:06,147 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:59:06,147 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:59:06,148 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:59:06,148 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:59:06,148 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:59:06,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:59:06,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:59:06,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:59:06,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:59:06,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:59:06,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:59:06,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:59:06,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:59:06,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:59:06,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:59:06,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:59:06,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:59:06,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:59:06,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:59:06,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:59:06,157 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:59:06,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:59:06,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:59:06,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:59:06,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:59:06,159 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 [2021-11-23 02:59:06,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:59:06,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:59:06,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:59:06,580 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:59:06,581 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:59:06,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-11-23 02:59:06,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/data/b94cf6f83/87f55938d18846cfae9383f8a22777d4/FLAG2cbc90128 [2021-11-23 02:59:08,004 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:59:08,005 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-11-23 02:59:08,090 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/data/b94cf6f83/87f55938d18846cfae9383f8a22777d4/FLAG2cbc90128 [2021-11-23 02:59:08,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/data/b94cf6f83/87f55938d18846cfae9383f8a22777d4 [2021-11-23 02:59:08,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:59:08,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:59:08,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:59:08,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:59:08,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:59:08,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:59:08" (1/1) ... [2021-11-23 02:59:08,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e51a736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:08, skipping insertion in model container [2021-11-23 02:59:08,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:59:08" (1/1) ... [2021-11-23 02:59:08,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:59:08,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:59:14,364 WARN L230 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_52f60a1a-2091-41ad-9627-30f947f116f1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[490207,490220] [2021-11-23 02:59:14,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:59:15,055 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:59:15,832 WARN L230 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_52f60a1a-2091-41ad-9627-30f947f116f1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[490207,490220] [2021-11-23 02:59:15,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:59:16,212 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:59:16,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:16 WrapperNode [2021-11-23 02:59:16,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:59:16,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:59:16,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:59:16,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:59:16,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:16" (1/1) ... [2021-11-23 02:59:16,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:16" (1/1) ... [2021-11-23 02:59:16,974 INFO L137 Inliner]: procedures = 713, calls = 6159, calls flagged for inlining = 240, calls inlined = 191, statements flattened = 9050 [2021-11-23 02:59:16,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:59:16,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:59:16,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:59:16,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:59:16,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:16" (1/1) ... [2021-11-23 02:59:16,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:16" (1/1) ... [2021-11-23 02:59:17,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:16" (1/1) ... [2021-11-23 02:59:17,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:16" (1/1) ... [2021-11-23 02:59:17,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:16" (1/1) ... [2021-11-23 02:59:17,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:16" (1/1) ... [2021-11-23 02:59:17,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:16" (1/1) ... [2021-11-23 02:59:17,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:59:17,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:59:17,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:59:17,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:59:17,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:16" (1/1) ... [2021-11-23 02:59:17,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:59:17,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:59:17,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:59:17,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:59:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 02:59:17,716 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 02:59:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_msix_exact [2021-11-23 02:59:17,716 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_msix_exact [2021-11-23 02:59:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_signal_notify [2021-11-23 02:59:17,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_signal_notify [2021-11-23 02:59:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_send [2021-11-23 02:59:17,717 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_send [2021-11-23 02:59:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_exists [2021-11-23 02:59:17,717 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_exists [2021-11-23 02:59:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_code_active [2021-11-23 02:59:17,717 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_code_active [2021-11-23 02:59:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_subscriber_mutex [2021-11-23 02:59:17,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_subscriber_mutex [2021-11-23 02:59:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_put [2021-11-23 02:59:17,718 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_put [2021-11-23 02:59:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:59:17,718 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:59:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_open [2021-11-23 02:59:17,719 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_open [2021-11-23 02:59:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_unregister_user_memory [2021-11-23 02:59:17,719 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_unregister_user_memory [2021-11-23 02:59:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_add_notification [2021-11-23 02:59:17,719 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_add_notification [2021-11-23 02:59:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_unlocked_ioctl [2021-11-23 02:59:17,719 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_unlocked_ioctl [2021-11-23 02:59:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 02:59:17,720 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 02:59:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:59:17,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:59:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_get_id [2021-11-23 02:59:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_get_id [2021-11-23 02:59:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:59:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:59:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_has_entry [2021-11-23 02:59:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_has_entry [2021-11-23 02:59:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_destroy [2021-11-23 02:59:17,722 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_destroy [2021-11-23 02:59:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_send_datagram [2021-11-23 02:59:17,723 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_send_datagram [2021-11-23 02:59:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-23 02:59:17,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-23 02:59:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_get [2021-11-23 02:59:17,723 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_get [2021-11-23 02:59:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_get_entry [2021-11-23 02:59:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_get_entry [2021-11-23 02:59:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2021-11-23 02:59:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2021-11-23 02:59:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure qp_acquire_queue_mutex [2021-11-23 02:59:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_acquire_queue_mutex [2021-11-23 02:59:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_get_context_id [2021-11-23 02:59:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_get_context_id [2021-11-23 02:59:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_map_queues [2021-11-23 02:59:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_map_queues [2021-11-23 02:59:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_add [2021-11-23 02:59:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_add [2021-11-23 02:59:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 02:59:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 02:59:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:59:17,829 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:59:17,829 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock___1 [2021-11-23 02:59:17,829 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock___1 [2021-11-23 02:59:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure no_printk [2021-11-23 02:59:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure no_printk [2021-11-23 02:59:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_get_head [2021-11-23 02:59:17,830 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_get_head [2021-11-23 02:59:17,830 INFO L130 BoogieDeclarations]: Found specification of procedure dbell_delayed_dispatch [2021-11-23 02:59:17,831 INFO L138 BoogieDeclarations]: Found implementation of procedure dbell_delayed_dispatch [2021-11-23 02:59:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_release [2021-11-23 02:59:17,831 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_release [2021-11-23 02:59:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_vmci_host_dev [2021-11-23 02:59:17,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_vmci_host_dev [2021-11-23 02:59:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 02:59:17,832 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 02:59:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 02:59:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:59:17,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:59:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_qp_list [2021-11-23 02:59:17,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_qp_list [2021-11-23 02:59:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure dg_delayed_dispatch [2021-11-23 02:59:17,833 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_delayed_dispatch [2021-11-23 02:59:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:59:17,833 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-23 02:59:17,833 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-23 02:59:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-23 02:59:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-23 02:59:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 02:59:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 02:59:17,834 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:59:17,834 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:59:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_host [2021-11-23 02:59:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_host [2021-11-23 02:59:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:59:17,835 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:59:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:59:17,835 INFO L130 BoogieDeclarations]: Found specification of procedure qp_reset_saved_headers [2021-11-23 02:59:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_reset_saved_headers [2021-11-23 02:59:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_handle [2021-11-23 02:59:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_handle [2021-11-23 02:59:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_add_entry [2021-11-23 02:59:17,836 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_add_entry [2021-11-23 02:59:17,836 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_invalid [2021-11-23 02:59:17,837 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_invalid [2021-11-23 02:59:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_dispatch [2021-11-23 02:59:17,839 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_dispatch [2021-11-23 02:59:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:59:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-11-23 02:59:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-11-23 02:59:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_vmci_queue_kern_if [2021-11-23 02:59:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_vmci_queue_kern_if [2021-11-23 02:59:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:59:17,842 INFO L130 BoogieDeclarations]: Found specification of procedure kmap [2021-11-23 02:59:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap [2021-11-23 02:59:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_find [2021-11-23 02:59:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_find [2021-11-23 02:59:17,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:59:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:59:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure __validate_creds [2021-11-23 02:59:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __validate_creds [2021-11-23 02:59:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-11-23 02:59:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-11-23 02:59:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_clear_notify_call [2021-11-23 02:59:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_clear_notify_call [2021-11-23 02:59:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-23 02:59:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-23 02:59:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer [2021-11-23 02:59:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer [2021-11-23 02:59:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-23 02:59:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-23 02:59:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-23 02:59:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-23 02:59:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_unset_notify [2021-11-23 02:59:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_unset_notify [2021-11-23 02:59:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure __hlist_del [2021-11-23 02:59:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __hlist_del [2021-11-23 02:59:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_event_exit [2021-11-23 02:59:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_event_exit [2021-11-23 02:59:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_destroy [2021-11-23 02:59:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_destroy [2021-11-23 02:59:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure get_cred [2021-11-23 02:59:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cred [2021-11-23 02:59:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-23 02:59:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-23 02:59:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-11-23 02:59:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-11-23 02:59:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure qp_lock [2021-11-23 02:59:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_lock [2021-11-23 02:59:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2021-11-23 02:59:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2021-11-23 02:59:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_by_handle [2021-11-23 02:59:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_by_handle [2021-11-23 02:59:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 02:59:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 02:59:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer_local [2021-11-23 02:59:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer_local [2021-11-23 02:59:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure vunmap [2021-11-23 02:59:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure vunmap [2021-11-23 02:59:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_get_user_memory [2021-11-23 02:59:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_get_user_memory [2021-11-23 02:59:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_fire_notification [2021-11-23 02:59:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_fire_notification [2021-11-23 02:59:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:59:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure qp_unlock [2021-11-23 02:59:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_unlock [2021-11-23 02:59:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_close [2021-11-23 02:59:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_close [2021-11-23 02:59:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:59:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_probe_device [2021-11-23 02:59:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_probe_device [2021-11-23 02:59:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_invalid___1 [2021-11-23 02:59:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_invalid___1 [2021-11-23 02:59:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_invalid___0 [2021-11-23 02:59:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_invalid___0 [2021-11-23 02:59:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_alloc_queue [2021-11-23 02:59:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_alloc_queue [2021-11-23 02:59:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:59:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:59:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_free_ctx [2021-11-23 02:59:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_free_ctx [2021-11-23 02:59:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:59:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:59:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_poll [2021-11-23 02:59:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_poll [2021-11-23 02:59:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-23 02:59:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-23 02:59:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:59:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:59:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure qp_release_pages [2021-11-23 02:59:17,862 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_release_pages [2021-11-23 02:59:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure qp_cleanup_queue_mutex [2021-11-23 02:59:17,862 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_cleanup_queue_mutex [2021-11-23 02:59:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_get_size [2021-11-23 02:59:17,862 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_get_size [2021-11-23 02:59:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_hypercall [2021-11-23 02:59:17,863 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_hypercall [2021-11-23 02:59:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-23 02:59:17,863 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-23 02:59:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 02:59:17,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 02:59:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_remove_entry [2021-11-23 02:59:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_remove_entry [2021-11-23 02:59:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:59:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:59:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_q_header_init [2021-11-23 02:59:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_q_header_init [2021-11-23 02:59:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add_rcu [2021-11-23 02:59:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add_rcu [2021-11-23 02:59:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_register_user_memory [2021-11-23 02:59:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_register_user_memory [2021-11-23 02:59:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-23 02:59:17,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-23 02:59:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_guest_work [2021-11-23 02:59:17,867 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_guest_work [2021-11-23 02:59:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure drv_cp_harray_to_user [2021-11-23 02:59:17,867 INFO L138 BoogieDeclarations]: Found implementation of procedure drv_cp_harray_to_user [2021-11-23 02:59:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:59:17,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:59:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 02:59:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 02:59:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_remove_tail [2021-11-23 02:59:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_remove_tail [2021-11-23 02:59:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_subscriber_mutex [2021-11-23 02:59:17,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_subscriber_mutex [2021-11-23 02:59:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-23 02:59:17,871 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-23 02:59:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_supports_host_qp [2021-11-23 02:59:17,871 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_supports_host_qp [2021-11-23 02:59:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:59:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:59:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:59:17,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:59:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_detach [2021-11-23 02:59:17,872 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_detach [2021-11-23 02:59:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_enqueue_datagram [2021-11-23 02:59:17,872 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_enqueue_datagram [2021-11-23 02:59:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-23 02:59:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-23 02:59:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_unmap_queues [2021-11-23 02:59:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_unmap_queues [2021-11-23 02:59:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_rcu [2021-11-23 02:59:17,879 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_rcu [2021-11-23 02:59:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_qp_list [2021-11-23 02:59:17,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_qp_list [2021-11-23 02:59:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:59:17,880 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:59:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:59:17,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:59:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:59:17,880 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:59:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:59:17,886 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:59:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-11-23 02:59:17,886 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-11-23 02:59:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:59:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:59:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2021-11-23 02:59:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2021-11-23 02:59:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_vmci_queue_kern_if [2021-11-23 02:59:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_vmci_queue_kern_if [2021-11-23 02:59:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_notify_dbell [2021-11-23 02:59:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_notify_dbell [2021-11-23 02:59:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_append_entry [2021-11-23 02:59:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_append_entry [2021-11-23 02:59:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-23 02:59:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-23 02:59:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-23 02:59:17,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-23 02:59:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure qp_broker_handle_to_entry [2021-11-23 02:59:17,889 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_broker_handle_to_entry [2021-11-23 02:59:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qpair_detach [2021-11-23 02:59:17,889 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qpair_detach [2021-11-23 02:59:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 02:59:17,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 02:59:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:59:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:59:17,890 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:59:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_hash [2021-11-23 02:59:17,890 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_hash [2021-11-23 02:59:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_create [2021-11-23 02:59:17,891 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_create [2021-11-23 02:59:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure event_find [2021-11-23 02:59:17,891 INFO L138 BoogieDeclarations]: Found implementation of procedure event_find [2021-11-23 02:59:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure qp_broker_alloc [2021-11-23 02:59:17,891 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_broker_alloc [2021-11-23 02:59:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:59:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_host_work [2021-11-23 02:59:17,892 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_host_work [2021-11-23 02:59:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-23 02:59:17,892 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-23 02:59:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure hash_32 [2021-11-23 02:59:17,892 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_32 [2021-11-23 02:59:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail_rcu [2021-11-23 02:59:17,893 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail_rcu [2021-11-23 02:59:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock___1 [2021-11-23 02:59:17,893 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock___1 [2021-11-23 02:59:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_endpoint_destroy [2021-11-23 02:59:17,893 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_endpoint_destroy [2021-11-23 02:59:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:59:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_guest [2021-11-23 02:59:17,894 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_guest [2021-11-23 02:59:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-23 02:59:17,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-23 02:59:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:59:17,894 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:59:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-23 02:59:17,894 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-23 02:59:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_event_dispatch [2021-11-23 02:59:17,895 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_event_dispatch [2021-11-23 02:59:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure qp_release_queue_mutex [2021-11-23 02:59:17,895 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_release_queue_mutex [2021-11-23 02:59:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 02:59:17,895 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 02:59:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_route [2021-11-23 02:59:17,896 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_route [2021-11-23 02:59:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2021-11-23 02:59:17,896 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2021-11-23 02:59:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure qp_free_queue [2021-11-23 02:59:17,896 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_free_queue [2021-11-23 02:59:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_free_queue [2021-11-23 02:59:17,897 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_free_queue [2021-11-23 02:59:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-23 02:59:17,898 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-23 02:59:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure atomic64_set [2021-11-23 02:59:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic64_set [2021-11-23 02:59:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_get_priv_flags [2021-11-23 02:59:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_get_priv_flags [2021-11-23 02:59:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_qp_exists [2021-11-23 02:59:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_qp_exists [2021-11-23 02:59:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2021-11-23 02:59:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2021-11-23 02:59:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_remove [2021-11-23 02:59:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_remove [2021-11-23 02:59:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:59:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:59:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure qp_init_queue_mutex [2021-11-23 02:59:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_init_queue_mutex [2021-11-23 02:59:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:59:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_context_get_priv_flags [2021-11-23 02:59:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_context_get_priv_flags [2021-11-23 02:59:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_2 [2021-11-23 02:59:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_2 [2021-11-23 02:59:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-23 02:59:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-23 02:59:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:59:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:59:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure put_cred [2021-11-23 02:59:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure put_cred [2021-11-23 02:59:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work___0 [2021-11-23 02:59:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work___0 [2021-11-23 02:59:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-11-23 02:59:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-11-23 02:59:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 02:59:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 02:59:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_guest_endpoints_exit [2021-11-23 02:59:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_guest_endpoints_exit [2021-11-23 02:59:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_HLIST_NODE [2021-11-23 02:59:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_HLIST_NODE [2021-11-23 02:59:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-23 02:59:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-23 02:59:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 02:59:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 02:59:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_equal [2021-11-23 02:59:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_equal [2021-11-23 02:59:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_qp_destroy [2021-11-23 02:59:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_qp_destroy [2021-11-23 02:59:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_handle_to_entry [2021-11-23 02:59:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_handle_to_entry [2021-11-23 02:59:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-23 02:59:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-23 02:59:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch [2021-11-23 02:59:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch [2021-11-23 02:59:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure handle_arr_calc_size [2021-11-23 02:59:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_arr_calc_size [2021-11-23 02:59:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2021-11-23 02:59:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2021-11-23 02:59:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_unhashed [2021-11-23 02:59:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_unhashed [2021-11-23 02:59:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_alloc [2021-11-23 02:59:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_alloc [2021-11-23 02:59:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 02:59:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 02:59:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure kunmap [2021-11-23 02:59:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure kunmap [2021-11-23 02:59:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 02:59:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 02:59:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 02:59:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 02:59:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_acquire [2021-11-23 02:59:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_acquire [2021-11-23 02:59:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_get [2021-11-23 02:59:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_get [2021-11-23 02:59:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_vmci_host_dev [2021-11-23 02:59:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_vmci_host_dev [2021-11-23 02:59:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-23 02:59:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-23 02:59:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2021-11-23 02:59:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2021-11-23 02:59:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_remove_entry [2021-11-23 02:59:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_remove_entry [2021-11-23 02:59:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_event_unsubscribe [2021-11-23 02:59:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_event_unsubscribe [2021-11-23 02:59:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_deny_interaction [2021-11-23 02:59:17,915 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_deny_interaction [2021-11-23 02:59:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_remove_device [2021-11-23 02:59:17,915 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_remove_device [2021-11-23 02:59:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_qp_create [2021-11-23 02:59:17,915 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_qp_create [2021-11-23 02:59:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_code_active [2021-11-23 02:59:17,916 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_code_active [2021-11-23 02:59:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:59:17,916 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:59:17,916 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:59:17,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:59:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-23 02:59:17,917 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-23 02:59:17,917 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-23 02:59:17,917 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-23 02:59:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_lookup [2021-11-23 02:59:17,918 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_lookup [2021-11-23 02:59:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-23 02:59:17,918 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-23 02:59:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:59:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_create [2021-11-23 02:59:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_create [2021-11-23 02:59:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_put [2021-11-23 02:59:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_put [2021-11-23 02:59:19,657 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:59:19,664 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:59:20,120 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:59:40,399 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:59:44,192 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:59:44,193 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:59:44,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:44 BoogieIcfgContainer [2021-11-23 02:59:44,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:59:44,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:59:44,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:59:44,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:59:44,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:59:08" (1/3) ... [2021-11-23 02:59:44,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0be719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:59:44, skipping insertion in model container [2021-11-23 02:59:44,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:59:16" (2/3) ... [2021-11-23 02:59:44,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0be719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:59:44, skipping insertion in model container [2021-11-23 02:59:44,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:59:44" (3/3) ... [2021-11-23 02:59:44,228 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-11-23 02:59:44,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:59:44,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:59:44,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:59:44,363 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:59:44,364 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:59:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 2672 states, 1624 states have (on average 1.3257389162561577) internal successors, (2153), 1691 states have internal predecessors, (2153), 843 states have call successors, (843), 204 states have call predecessors, (843), 203 states have return successors, (839), 833 states have call predecessors, (839), 839 states have call successors, (839) [2021-11-23 02:59:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 02:59:44,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:59:44,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:59:44,587 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:59:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:59:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1095675750, now seen corresponding path program 1 times [2021-11-23 02:59:44,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:59:44,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574052347] [2021-11-23 02:59:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:59:44,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:59:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:59:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:59:45,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:59:45,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574052347] [2021-11-23 02:59:45,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574052347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:59:45,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:59:45,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:59:45,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606965780] [2021-11-23 02:59:45,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:59:45,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:59:45,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:59:45,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:59:45,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:59:45,666 INFO L87 Difference]: Start difference. First operand has 2672 states, 1624 states have (on average 1.3257389162561577) internal successors, (2153), 1691 states have internal predecessors, (2153), 843 states have call successors, (843), 204 states have call predecessors, (843), 203 states have return successors, (839), 833 states have call predecessors, (839), 839 states have call successors, (839) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:59:49,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:59:52,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:59:55,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:59:57,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:59:58,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:59:58,358 INFO L93 Difference]: Finished difference Result 7941 states and 11637 transitions. [2021-11-23 02:59:58,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:59:58,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-23 02:59:58,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:59:58,450 INFO L225 Difference]: With dead ends: 7941 [2021-11-23 02:59:58,450 INFO L226 Difference]: Without dead ends: 5258 [2021-11-23 02:59:58,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:59:58,499 INFO L933 BasicCegarLoop]: 5917 mSDtfsCounter, 3741 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3745 SdHoareTripleChecker+Valid, 9323 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:59:58,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3745 Valid, 9323 Invalid, 940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 934 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2021-11-23 02:59:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2021-11-23 02:59:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 5247. [2021-11-23 02:59:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 3202 states have (on average 1.320424734540912) internal successors, (4228), 3309 states have internal predecessors, (4228), 1641 states have call successors, (1641), 405 states have call predecessors, (1641), 403 states have return successors, (1629), 1613 states have call predecessors, (1629), 1626 states have call successors, (1629) [2021-11-23 02:59:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 7498 transitions. [2021-11-23 02:59:59,118 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 7498 transitions. Word has length 22 [2021-11-23 02:59:59,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:59:59,119 INFO L470 AbstractCegarLoop]: Abstraction has 5247 states and 7498 transitions. [2021-11-23 02:59:59,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:59:59,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 7498 transitions. [2021-11-23 02:59:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 02:59:59,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:59:59,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:59:59,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:59:59,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:59:59,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:59:59,140 INFO L85 PathProgramCache]: Analyzing trace with hash -280132828, now seen corresponding path program 1 times [2021-11-23 02:59:59,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:59:59,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257685943] [2021-11-23 02:59:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:59:59,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:59:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:59:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:59:59,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:59:59,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257685943] [2021-11-23 02:59:59,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257685943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:59:59,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:59:59,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:59:59,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577859539] [2021-11-23 02:59:59,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:59:59,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:59:59,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:59:59,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:59:59,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:59:59,534 INFO L87 Difference]: Start difference. First operand 5247 states and 7498 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:00:02,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:04,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:08,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:10,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:13,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:13,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:13,445 INFO L93 Difference]: Finished difference Result 9410 states and 13331 transitions. [2021-11-23 03:00:13,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:00:13,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 03:00:13,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:13,508 INFO L225 Difference]: With dead ends: 9410 [2021-11-23 03:00:13,508 INFO L226 Difference]: Without dead ends: 5250 [2021-11-23 03:00:13,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:00:13,568 INFO L933 BasicCegarLoop]: 3443 mSDtfsCounter, 1 mSDsluCounter, 3804 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6884 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:13,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6884 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 729 Invalid, 3 Unknown, 0 Unchecked, 13.4s Time] [2021-11-23 03:00:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2021-11-23 03:00:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 5248. [2021-11-23 03:00:13,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 3203 states have (on average 1.320324695597877) internal successors, (4229), 3310 states have internal predecessors, (4229), 1641 states have call successors, (1641), 405 states have call predecessors, (1641), 403 states have return successors, (1629), 1613 states have call predecessors, (1629), 1626 states have call successors, (1629) [2021-11-23 03:00:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 7499 transitions. [2021-11-23 03:00:13,970 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 7499 transitions. Word has length 21 [2021-11-23 03:00:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:13,971 INFO L470 AbstractCegarLoop]: Abstraction has 5248 states and 7499 transitions. [2021-11-23 03:00:13,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:00:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 7499 transitions. [2021-11-23 03:00:13,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:00:13,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:13,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:13,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:00:13,975 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:00:13,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:13,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1541064419, now seen corresponding path program 1 times [2021-11-23 03:00:13,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:13,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984779655] [2021-11-23 03:00:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:13,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:14,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:14,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984779655] [2021-11-23 03:00:14,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984779655] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:00:14,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299790346] [2021-11-23 03:00:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:14,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:00:14,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:00:14,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:00:14,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:00:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:16,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 4798 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:00:16,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:00:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:00:16,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:00:16,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299790346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:16,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:00:16,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 03:00:16,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903318807] [2021-11-23 03:00:16,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:16,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:00:16,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:16,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:00:16,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:00:16,592 INFO L87 Difference]: Start difference. First operand 5248 states and 7499 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:00:19,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:21,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:24,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:25,040 INFO L93 Difference]: Finished difference Result 6672 states and 9417 transitions. [2021-11-23 03:00:25,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:00:25,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-23 03:00:25,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:25,123 INFO L225 Difference]: With dead ends: 6672 [2021-11-23 03:00:25,123 INFO L226 Difference]: Without dead ends: 6669 [2021-11-23 03:00:25,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:00:25,133 INFO L933 BasicCegarLoop]: 3895 mSDtfsCounter, 3774 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3778 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:25,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3778 Valid, 5594 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 585 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2021-11-23 03:00:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6669 states. [2021-11-23 03:00:25,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6669 to 6660. [2021-11-23 03:00:25,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6660 states, 4029 states have (on average 1.3100024820054603) internal successors, (5278), 4170 states have internal predecessors, (5278), 2068 states have call successors, (2068), 565 states have call predecessors, (2068), 562 states have return successors, (2060), 2034 states have call predecessors, (2060), 2054 states have call successors, (2060) [2021-11-23 03:00:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6660 states to 6660 states and 9406 transitions. [2021-11-23 03:00:25,676 INFO L78 Accepts]: Start accepts. Automaton has 6660 states and 9406 transitions. Word has length 26 [2021-11-23 03:00:25,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:25,676 INFO L470 AbstractCegarLoop]: Abstraction has 6660 states and 9406 transitions. [2021-11-23 03:00:25,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:00:25,677 INFO L276 IsEmpty]: Start isEmpty. Operand 6660 states and 9406 transitions. [2021-11-23 03:00:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:00:25,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:25,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:25,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:00:25,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:00:25,893 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:00:25,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:25,894 INFO L85 PathProgramCache]: Analyzing trace with hash 526993994, now seen corresponding path program 1 times [2021-11-23 03:00:25,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:25,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608116262] [2021-11-23 03:00:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:25,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:26,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:26,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608116262] [2021-11-23 03:00:26,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608116262] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:00:26,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148810349] [2021-11-23 03:00:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:26,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:00:26,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:00:26,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:00:26,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:00:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:27,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 4800 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:00:27,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:00:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:00:28,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:00:28,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148810349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:28,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:00:28,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 03:00:28,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395433866] [2021-11-23 03:00:28,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:28,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:00:28,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:28,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:00:28,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:00:28,044 INFO L87 Difference]: Start difference. First operand 6660 states and 9406 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:00:30,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:33,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:35,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:37,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:38,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:38,032 INFO L93 Difference]: Finished difference Result 6671 states and 9415 transitions. [2021-11-23 03:00:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:00:38,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-23 03:00:38,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:38,093 INFO L225 Difference]: With dead ends: 6671 [2021-11-23 03:00:38,093 INFO L226 Difference]: Without dead ends: 6668 [2021-11-23 03:00:38,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:00:38,100 INFO L933 BasicCegarLoop]: 3893 mSDtfsCounter, 3771 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3775 SdHoareTripleChecker+Valid, 5592 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:38,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3775 Valid, 5592 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 584 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2021-11-23 03:00:38,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6668 states. [2021-11-23 03:00:38,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6668 to 6659. [2021-11-23 03:00:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6659 states, 4029 states have (on average 1.3097542814594192) internal successors, (5277), 4169 states have internal predecessors, (5277), 2067 states have call successors, (2067), 565 states have call predecessors, (2067), 562 states have return successors, (2060), 2034 states have call predecessors, (2060), 2054 states have call successors, (2060) [2021-11-23 03:00:38,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6659 states to 6659 states and 9404 transitions. [2021-11-23 03:00:38,616 INFO L78 Accepts]: Start accepts. Automaton has 6659 states and 9404 transitions. Word has length 27 [2021-11-23 03:00:38,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:38,617 INFO L470 AbstractCegarLoop]: Abstraction has 6659 states and 9404 transitions. [2021-11-23 03:00:38,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:00:38,619 INFO L276 IsEmpty]: Start isEmpty. Operand 6659 states and 9404 transitions. [2021-11-23 03:00:38,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 03:00:38,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:38,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:38,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:00:38,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:00:38,850 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:00:38,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:38,851 INFO L85 PathProgramCache]: Analyzing trace with hash -336335809, now seen corresponding path program 1 times [2021-11-23 03:00:38,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:38,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755100789] [2021-11-23 03:00:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:38,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:39,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:39,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755100789] [2021-11-23 03:00:39,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755100789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:39,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:39,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:00:39,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446906624] [2021-11-23 03:00:39,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:39,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:00:39,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:39,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:00:39,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:00:39,170 INFO L87 Difference]: Start difference. First operand 6659 states and 9404 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 03:00:42,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:44,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:46,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:51,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:53,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:00:53,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:53,738 INFO L93 Difference]: Finished difference Result 18853 states and 26486 transitions. [2021-11-23 03:00:53,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:00:53,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2021-11-23 03:00:53,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:53,842 INFO L225 Difference]: With dead ends: 18853 [2021-11-23 03:00:53,842 INFO L226 Difference]: Without dead ends: 12195 [2021-11-23 03:00:53,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:00:53,895 INFO L933 BasicCegarLoop]: 4375 mSDtfsCounter, 3761 mSDsluCounter, 3791 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3762 SdHoareTripleChecker+Valid, 7808 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:53,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3762 Valid, 7808 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 759 Invalid, 3 Unknown, 0 Unchecked, 14.2s Time] [2021-11-23 03:00:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12195 states. [2021-11-23 03:00:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12195 to 12170. [2021-11-23 03:00:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12170 states, 7311 states have (on average 1.3024210094378335) internal successors, (9522), 7571 states have internal predecessors, (9522), 3767 states have call successors, (3767), 1097 states have call predecessors, (3767), 1091 states have return successors, (3764), 3712 states have call predecessors, (3764), 3754 states have call successors, (3764) [2021-11-23 03:00:54,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12170 states to 12170 states and 17053 transitions. [2021-11-23 03:00:54,544 INFO L78 Accepts]: Start accepts. Automaton has 12170 states and 17053 transitions. Word has length 37 [2021-11-23 03:00:54,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:54,545 INFO L470 AbstractCegarLoop]: Abstraction has 12170 states and 17053 transitions. [2021-11-23 03:00:54,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 03:00:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 12170 states and 17053 transitions. [2021-11-23 03:00:54,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 03:00:54,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:54,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:54,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:00:54,550 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:00:54,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:54,551 INFO L85 PathProgramCache]: Analyzing trace with hash -844413242, now seen corresponding path program 1 times [2021-11-23 03:00:54,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:54,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120846598] [2021-11-23 03:00:54,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:54,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:00:54,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:54,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120846598] [2021-11-23 03:00:54,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120846598] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:00:54,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162325922] [2021-11-23 03:00:54,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:54,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:00:54,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:00:54,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:00:54,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:00:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:56,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 4802 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:00:56,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:00:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:00:56,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:00:56,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162325922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:56,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:00:56,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 03:00:56,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126860988] [2021-11-23 03:00:56,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:56,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:00:56,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:56,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:00:56,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:00:56,648 INFO L87 Difference]: Start difference. First operand 12170 states and 17053 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:00:58,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:01,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:05,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:01:05,491 INFO L93 Difference]: Finished difference Result 19367 states and 26741 transitions. [2021-11-23 03:01:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:01:05,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-11-23 03:01:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:01:05,600 INFO L225 Difference]: With dead ends: 19367 [2021-11-23 03:01:05,601 INFO L226 Difference]: Without dead ends: 19363 [2021-11-23 03:01:05,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:01:05,617 INFO L933 BasicCegarLoop]: 3898 mSDtfsCounter, 3713 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3713 SdHoareTripleChecker+Valid, 5746 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:01:05,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3713 Valid, 5746 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 606 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-23 03:01:05,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19363 states. [2021-11-23 03:01:06,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19363 to 19355. [2021-11-23 03:01:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19355 states, 11503 states have (on average 1.2900113013996348) internal successors, (14839), 11938 states have internal predecessors, (14839), 5943 states have call successors, (5943), 1918 states have call predecessors, (5943), 1908 states have return successors, (5945), 5856 states have call predecessors, (5945), 5932 states have call successors, (5945) [2021-11-23 03:01:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19355 states to 19355 states and 26727 transitions. [2021-11-23 03:01:06,683 INFO L78 Accepts]: Start accepts. Automaton has 19355 states and 26727 transitions. Word has length 28 [2021-11-23 03:01:06,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:01:06,685 INFO L470 AbstractCegarLoop]: Abstraction has 19355 states and 26727 transitions. [2021-11-23 03:01:06,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:01:06,686 INFO L276 IsEmpty]: Start isEmpty. Operand 19355 states and 26727 transitions. [2021-11-23 03:01:06,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 03:01:06,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:01:06,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:01:06,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:01:06,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:01:06,914 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:01:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:01:06,914 INFO L85 PathProgramCache]: Analyzing trace with hash -408359731, now seen corresponding path program 1 times [2021-11-23 03:01:06,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:01:06,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458249138] [2021-11-23 03:01:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:01:06,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:01:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:01:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:01:07,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:01:07,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458249138] [2021-11-23 03:01:07,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458249138] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:01:07,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134512060] [2021-11-23 03:01:07,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:01:07,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:01:07,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:01:07,221 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:01:07,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:01:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:01:08,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 4804 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:01:08,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:01:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:01:08,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:01:08,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134512060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:01:08,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:01:08,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 03:01:08,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581534031] [2021-11-23 03:01:08,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:01:08,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:01:08,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:01:08,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:01:08,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:01:08,778 INFO L87 Difference]: Start difference. First operand 19355 states and 26727 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:01:11,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:13,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:16,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:18,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:19,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:01:19,541 INFO L93 Difference]: Finished difference Result 19423 states and 26800 transitions. [2021-11-23 03:01:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:01:19,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-23 03:01:19,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:01:19,660 INFO L225 Difference]: With dead ends: 19423 [2021-11-23 03:01:19,660 INFO L226 Difference]: Without dead ends: 19420 [2021-11-23 03:01:19,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:01:19,675 INFO L933 BasicCegarLoop]: 3886 mSDtfsCounter, 3759 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3765 SdHoareTripleChecker+Valid, 5585 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:01:19,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3765 Valid, 5585 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 584 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2021-11-23 03:01:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19420 states. [2021-11-23 03:01:20,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19420 to 19396. [2021-11-23 03:01:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19396 states, 11524 states have (on average 1.290003471017008) internal successors, (14866), 11965 states have internal predecessors, (14866), 5949 states have call successors, (5949), 1932 states have call predecessors, (5949), 1922 states have return successors, (5952), 5856 states have call predecessors, (5952), 5939 states have call successors, (5952) [2021-11-23 03:01:20,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19396 states to 19396 states and 26767 transitions. [2021-11-23 03:01:20,855 INFO L78 Accepts]: Start accepts. Automaton has 19396 states and 26767 transitions. Word has length 29 [2021-11-23 03:01:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:01:20,856 INFO L470 AbstractCegarLoop]: Abstraction has 19396 states and 26767 transitions. [2021-11-23 03:01:20,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:01:20,857 INFO L276 IsEmpty]: Start isEmpty. Operand 19396 states and 26767 transitions. [2021-11-23 03:01:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 03:01:20,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:01:20,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:01:20,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:01:21,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:01:21,073 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:01:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:01:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash 224402089, now seen corresponding path program 1 times [2021-11-23 03:01:21,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:01:21,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545969520] [2021-11-23 03:01:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:01:21,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:01:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:01:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:01:21,385 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:01:21,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545969520] [2021-11-23 03:01:21,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545969520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:01:21,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056567652] [2021-11-23 03:01:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:01:21,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:01:21,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:01:21,390 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:01:21,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:01:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:01:22,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 4806 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:01:22,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:01:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:01:23,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:01:23,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056567652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:01:23,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:01:23,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 03:01:23,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635246269] [2021-11-23 03:01:23,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:01:23,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:01:23,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:01:23,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:01:23,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:01:23,066 INFO L87 Difference]: Start difference. First operand 19396 states and 26767 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:01:25,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:27,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:30,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:31,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:34,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:36,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:01:37,176 INFO L93 Difference]: Finished difference Result 52003 states and 72901 transitions. [2021-11-23 03:01:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:01:37,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-11-23 03:01:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:01:37,388 INFO L225 Difference]: With dead ends: 52003 [2021-11-23 03:01:37,388 INFO L226 Difference]: Without dead ends: 32608 [2021-11-23 03:01:37,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:01:37,730 INFO L933 BasicCegarLoop]: 4177 mSDtfsCounter, 3192 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3194 SdHoareTripleChecker+Valid, 6227 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:01:37,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3194 Valid, 6227 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 683 Invalid, 4 Unknown, 0 Unchecked, 13.2s Time] [2021-11-23 03:01:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32608 states. [2021-11-23 03:01:39,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32608 to 32499. [2021-11-23 03:01:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32499 states, 19207 states have (on average 1.281303691362524) internal successors, (24610), 19950 states have internal predecessors, (24610), 9830 states have call successors, (9830), 3450 states have call predecessors, (9830), 3461 states have return successors, (10408), 9720 states have call predecessors, (10408), 9816 states have call successors, (10408) [2021-11-23 03:01:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32499 states to 32499 states and 44848 transitions. [2021-11-23 03:01:39,539 INFO L78 Accepts]: Start accepts. Automaton has 32499 states and 44848 transitions. Word has length 30 [2021-11-23 03:01:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:01:39,540 INFO L470 AbstractCegarLoop]: Abstraction has 32499 states and 44848 transitions. [2021-11-23 03:01:39,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:01:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 32499 states and 44848 transitions. [2021-11-23 03:01:39,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 03:01:39,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:01:39,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:01:39,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:01:39,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:01:39,756 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:01:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:01:39,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1634813104, now seen corresponding path program 1 times [2021-11-23 03:01:39,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:01:39,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429306129] [2021-11-23 03:01:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:01:39,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:01:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:01:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:01:40,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:01:40,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429306129] [2021-11-23 03:01:40,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429306129] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:01:40,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876549746] [2021-11-23 03:01:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:01:40,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:01:40,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:01:40,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:01:40,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 03:01:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:01:41,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 4808 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:01:41,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:01:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:01:41,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:01:41,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876549746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:01:41,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:01:41,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 03:01:41,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674266906] [2021-11-23 03:01:41,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:01:41,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:01:41,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:01:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:01:41,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:01:41,959 INFO L87 Difference]: Start difference. First operand 32499 states and 44848 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:01:44,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:46,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:50,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:52,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:01:56,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:01:56,515 INFO L93 Difference]: Finished difference Result 97331 states and 138847 transitions. [2021-11-23 03:01:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:01:56,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-23 03:01:56,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:01:57,149 INFO L225 Difference]: With dead ends: 97331 [2021-11-23 03:01:57,149 INFO L226 Difference]: Without dead ends: 64833 [2021-11-23 03:01:57,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:01:57,390 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 3834 mSDsluCounter, 3866 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3836 SdHoareTripleChecker+Valid, 7972 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:01:57,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3836 Valid, 7972 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 747 Invalid, 2 Unknown, 0 Unchecked, 12.4s Time] [2021-11-23 03:01:57,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64833 states. [2021-11-23 03:02:00,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64833 to 64775. [2021-11-23 03:02:00,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64775 states, 38296 states have (on average 1.2813870900355129) internal successors, (49072), 39768 states have internal predecessors, (49072), 19592 states have call successors, (19592), 6874 states have call predecessors, (19592), 6886 states have return successors, (23036), 19376 states have call predecessors, (23036), 19577 states have call successors, (23036) [2021-11-23 03:02:01,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64775 states to 64775 states and 91700 transitions. [2021-11-23 03:02:01,619 INFO L78 Accepts]: Start accepts. Automaton has 64775 states and 91700 transitions. Word has length 31 [2021-11-23 03:02:01,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:02:01,620 INFO L470 AbstractCegarLoop]: Abstraction has 64775 states and 91700 transitions. [2021-11-23 03:02:01,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:02:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 64775 states and 91700 transitions. [2021-11-23 03:02:01,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 03:02:01,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:01,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:02:01,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-23 03:02:01,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 03:02:01,846 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:01,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash 859062924, now seen corresponding path program 1 times [2021-11-23 03:02:01,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:02:01,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505013014] [2021-11-23 03:02:01,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:01,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:02:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:02:02,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:02:02,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505013014] [2021-11-23 03:02:02,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505013014] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:02:02,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365550392] [2021-11-23 03:02:02,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:02,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:02:02,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:02:02,342 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:02:02,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 03:02:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:03,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 4810 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:02:03,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:02:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:02:04,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:02:04,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365550392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:02:04,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:02:04,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 03:02:04,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356133256] [2021-11-23 03:02:04,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:02:04,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:02:04,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:02:04,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:02:04,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:02:04,061 INFO L87 Difference]: Start difference. First operand 64775 states and 91700 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:02:06,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:02:11,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:02:13,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:02:17,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:02:20,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:02:20,213 INFO L93 Difference]: Finished difference Result 126922 states and 189403 transitions. [2021-11-23 03:02:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:02:20,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-11-23 03:02:20,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:02:21,116 INFO L225 Difference]: With dead ends: 126922 [2021-11-23 03:02:21,117 INFO L226 Difference]: Without dead ends: 126885 [2021-11-23 03:02:21,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:02:21,210 INFO L933 BasicCegarLoop]: 4356 mSDtfsCounter, 3804 mSDsluCounter, 3801 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3804 SdHoareTripleChecker+Valid, 7801 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:02:21,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3804 Valid, 7801 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 730 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2021-11-23 03:02:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126885 states. [2021-11-23 03:02:27,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126885 to 126854. [2021-11-23 03:02:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126854 states, 75019 states have (on average 1.2801290339780589) internal successors, (96034), 77911 states have internal predecessors, (96034), 38319 states have call successors, (38319), 13598 states have call predecessors, (38319), 13515 states have return successors, (54921), 37766 states have call predecessors, (54921), 38302 states have call successors, (54921) [2021-11-23 03:02:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126854 states to 126854 states and 189274 transitions. [2021-11-23 03:02:28,395 INFO L78 Accepts]: Start accepts. Automaton has 126854 states and 189274 transitions. Word has length 32 [2021-11-23 03:02:28,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:02:28,395 INFO L470 AbstractCegarLoop]: Abstraction has 126854 states and 189274 transitions. [2021-11-23 03:02:28,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:02:28,396 INFO L276 IsEmpty]: Start isEmpty. Operand 126854 states and 189274 transitions. [2021-11-23 03:02:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 03:02:28,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:28,406 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:02:28,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-23 03:02:28,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:02:28,614 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:28,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1297923734, now seen corresponding path program 1 times [2021-11-23 03:02:28,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:02:28,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126221792] [2021-11-23 03:02:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:28,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:02:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:29,318 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-23 03:02:29,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:02:29,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126221792] [2021-11-23 03:02:29,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126221792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:02:29,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:02:29,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:02:29,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805884887] [2021-11-23 03:02:29,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:02:29,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:02:29,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:02:29,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:02:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:02:29,322 INFO L87 Difference]: Start difference. First operand 126854 states and 189274 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:02:31,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:02:34,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:02:38,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:02:40,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:02:43,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:02:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:02:49,114 INFO L93 Difference]: Finished difference Result 281249 states and 418262 transitions. [2021-11-23 03:02:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:02:49,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 93 [2021-11-23 03:02:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:02:49,941 INFO L225 Difference]: With dead ends: 281249 [2021-11-23 03:02:49,942 INFO L226 Difference]: Without dead ends: 154396 [2021-11-23 03:02:50,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:02:50,871 INFO L933 BasicCegarLoop]: 3923 mSDtfsCounter, 2166 mSDsluCounter, 3748 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 7314 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:02:50,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2166 Valid, 7314 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 746 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2021-11-23 03:02:51,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154396 states. [2021-11-23 03:02:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154396 to 154348. [2021-11-23 03:02:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154348 states, 90844 states have (on average 1.275053938620052) internal successors, (115831), 94468 states have internal predecessors, (115831), 46365 states have call successors, (46365), 17241 states have call predecessors, (46365), 17138 states have return successors, (66736), 45666 states have call predecessors, (66736), 46348 states have call successors, (66736) [2021-11-23 03:02:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154348 states to 154348 states and 228932 transitions. [2021-11-23 03:02:59,791 INFO L78 Accepts]: Start accepts. Automaton has 154348 states and 228932 transitions. Word has length 93 [2021-11-23 03:02:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:02:59,792 INFO L470 AbstractCegarLoop]: Abstraction has 154348 states and 228932 transitions. [2021-11-23 03:02:59,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:02:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 154348 states and 228932 transitions. [2021-11-23 03:02:59,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 03:02:59,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:59,796 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:02:59,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:02:59,796 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:59,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:59,797 INFO L85 PathProgramCache]: Analyzing trace with hash -361067246, now seen corresponding path program 1 times [2021-11-23 03:02:59,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:02:59,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989850646] [2021-11-23 03:02:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:59,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:02:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 03:03:00,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:03:00,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989850646] [2021-11-23 03:03:00,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989850646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:03:00,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109649910] [2021-11-23 03:03:00,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:03:00,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:03:00,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:03:00,078 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:03:00,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f60a1a-2091-41ad-9627-30f947f116f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 03:03:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:03:01,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 5516 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:03:01,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:03:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:03:02,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:03:02,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109649910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:03:02,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:03:02,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 03:03:02,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741688731] [2021-11-23 03:03:02,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:03:02,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:03:02,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:03:02,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:03:02,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:03:02,214 INFO L87 Difference]: Start difference. First operand 154348 states and 228932 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-23 03:03:04,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:03:06,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:03:09,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:03:13,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:03:14,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:03:16,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []