./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.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_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/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_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/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_28a8d324-1f87-4837-bc54-675d7d3ec2dd/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 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:51:05,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:51:05,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:51:05,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:51:05,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:51:05,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:51:05,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:51:05,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:51:05,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:51:05,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:51:05,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:51:05,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:51:05,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:51:05,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:51:05,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:51:05,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:51:05,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:51:05,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:51:05,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:51:05,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:51:05,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:51:05,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:51:05,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:51:05,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:51:05,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:51:05,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:51:05,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:51:05,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:51:05,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:51:05,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:51:05,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:51:05,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:51:05,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:51:05,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:51:05,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:51:05,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:51:05,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:51:05,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:51:05,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:51:05,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:51:05,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:51:05,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:51:05,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:51:05,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:51:05,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:51:05,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:51:05,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:51:05,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:51:05,678 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:51:05,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:51:05,679 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:51:05,679 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:51:05,679 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:51:05,680 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:51:05,680 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:51:05,680 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:51:05,680 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:51:05,681 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:51:05,681 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:51:05,681 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:51:05,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:51:05,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:51:05,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:51:05,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:51:05,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:51:05,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:51:05,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:51:05,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:51:05,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:51:05,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:51:05,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:51:05,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:51:05,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:51:05,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:51:05,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:51:05,686 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:51:05,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:51:05,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:51:05,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:51:05,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:51:05,687 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_28a8d324-1f87-4837-bc54-675d7d3ec2dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2021-11-23 02:51:05,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:51:06,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:51:06,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:51:06,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:51:06,010 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:51:06,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-23 02:51:06,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/data/5aea631e1/8468394d49d44a1d8d3a8aee1081c8ff/FLAG39d754e6a [2021-11-23 02:51:07,158 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:51:07,159 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-23 02:51:07,240 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/data/5aea631e1/8468394d49d44a1d8d3a8aee1081c8ff/FLAG39d754e6a [2021-11-23 02:51:07,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/data/5aea631e1/8468394d49d44a1d8d3a8aee1081c8ff [2021-11-23 02:51:07,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:51:07,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:51:07,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:51:07,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:51:07,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:51:07,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:07" (1/1) ... [2021-11-23 02:51:07,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c0d97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:07, skipping insertion in model container [2021-11-23 02:51:07,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:07" (1/1) ... [2021-11-23 02:51:07,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:51:07,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:51:11,671 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_28a8d324-1f87-4837-bc54-675d7d3ec2dd/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-23 02:51:11,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:51:11,931 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:51:12,560 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_28a8d324-1f87-4837-bc54-675d7d3ec2dd/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-23 02:51:12,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:51:12,769 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:51:12,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12 WrapperNode [2021-11-23 02:51:12,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:51:12,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:51:12,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:51:12,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:51:12,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2021-11-23 02:51:12,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2021-11-23 02:51:13,345 INFO L137 Inliner]: procedures = 445, calls = 3482, calls flagged for inlining = 226, calls inlined = 196, statements flattened = 7782 [2021-11-23 02:51:13,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:51:13,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:51:13,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:51:13,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:51:13,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2021-11-23 02:51:13,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2021-11-23 02:51:13,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2021-11-23 02:51:13,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2021-11-23 02:51:13,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2021-11-23 02:51:13,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2021-11-23 02:51:13,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2021-11-23 02:51:13,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:51:13,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:51:13,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:51:13,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:51:13,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (1/1) ... [2021-11-23 02:51:13,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:51:13,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:51:13,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:51:13,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:51:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-23 02:51:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-23 02:51:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-23 02:51:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-23 02:51:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 02:51:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 02:51:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:51:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:51:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-23 02:51:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_fabric_acl [2021-11-23 02:51:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_fabric_acl [2021-11-23 02:51:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:51:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:51:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_access_ok [2021-11-23 02:51:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_access_ok [2021-11-23 02:51:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_close_session [2021-11-23 02:51:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_close_session [2021-11-23 02:51:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-23 02:51:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-23 02:51:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-23 02:51:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:51:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-23 02:51:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-23 02:51:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 02:51:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 02:51:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:51:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:51:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-23 02:51:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-23 02:51:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-23 02:51:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-23 02:51:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tpg [2021-11-23 02:51:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tpg [2021-11-23 02:51:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-23 02:51:13,943 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-23 02:51:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-23 02:51:13,944 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-23 02:51:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_open [2021-11-23 02:51:13,944 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_open [2021-11-23 02:51:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:51:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-23 02:51:13,945 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-23 02:51:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-23 02:51:13,945 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-23 02:51:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-11-23 02:51:13,945 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-11-23 02:51:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 02:51:13,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 02:51:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:51:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:51:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:51:13,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:51:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-23 02:51:13,947 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-23 02:51:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-23 02:51:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 02:51:13,947 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 02:51:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_complete_cmd [2021-11-23 02:51:13,948 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_complete_cmd [2021-11-23 02:51:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-23 02:51:13,948 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-23 02:51:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-23 02:51:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-23 02:51:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-23 02:51:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-23 02:51:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-23 02:51:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-23 02:51:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-23 02:51:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-23 02:51:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id [2021-11-23 02:51:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id [2021-11-23 02:51:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-23 02:51:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-23 02:51:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:51:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:51:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:51:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:51:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-23 02:51:13,951 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-23 02:51:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:51:13,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:51:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-23 02:51:13,952 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-23 02:51:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-23 02:51:13,952 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-23 02:51:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-23 02:51:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-23 02:51:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:51:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:51:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-23 02:51:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-23 02:51:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2021-11-23 02:51:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2021-11-23 02:51:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-23 02:51:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-23 02:51:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-23 02:51:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-23 02:51:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-23 02:51:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-23 02:51:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-23 02:51:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-23 02:51:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_alloc_fabric_acl [2021-11-23 02:51:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_alloc_fabric_acl [2021-11-23 02:51:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-23 02:51:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-23 02:51:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_ioctl [2021-11-23 02:51:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_ioctl [2021-11-23 02:51:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-23 02:51:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-23 02:51:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:51:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:51:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tport [2021-11-23 02:51:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tport [2021-11-23 02:51:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-23 02:51:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-23 02:51:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 02:51:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 02:51:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-23 02:51:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-23 02:51:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:51:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-23 02:51:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-23 02:51:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:51:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-23 02:51:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-23 02:51:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:51:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:51:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-23 02:51:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-23 02:51:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-23 02:51:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-23 02:51:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-23 02:51:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-23 02:51:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:51:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:51:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:51:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:51:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:51:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:51:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-23 02:51:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-23 02:51:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-23 02:51:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-23 02:51:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-23 02:51:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-23 02:51:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-23 02:51:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-23 02:51:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:51:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:51:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:51:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-23 02:51:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-23 02:51:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:51:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-23 02:51:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-23 02:51:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_cmd [2021-11-23 02:51:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_cmd [2021-11-23 02:51:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_set_default_node_attrs [2021-11-23 02:51:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_set_default_node_attrs [2021-11-23 02:51:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nexus [2021-11-23 02:51:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nexus [2021-11-23 02:51:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:51:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-23 02:51:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-23 02:51:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-23 02:51:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-23 02:51:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-23 02:51:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-23 02:51:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-23 02:51:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-23 02:51:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:51:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:51:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_fabric_proto_ident [2021-11-23 02:51:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_fabric_proto_ident [2021-11-23 02:51:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-23 02:51:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-23 02:51:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2021-11-23 02:51:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2021-11-23 02:51:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2021-11-23 02:51:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2021-11-23 02:51:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_deregister [2021-11-23 02:51:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_deregister [2021-11-23 02:51:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:51:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:51:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-23 02:51:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-23 02:51:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_command_size [2021-11-23 02:51:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_command_size [2021-11-23 02:51:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_dump_proto_id [2021-11-23 02:51:13,971 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_dump_proto_id [2021-11-23 02:51:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-23 02:51:13,971 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-23 02:51:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:51:13,971 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:51:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:51:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-23 02:51:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-23 02:51:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_clear_endpoint [2021-11-23 02:51:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_clear_endpoint [2021-11-23 02:51:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-23 02:51:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-23 02:51:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-23 02:51:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-23 02:51:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:51:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:51:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_flush_vq [2021-11-23 02:51:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_flush_vq [2021-11-23 02:51:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-23 02:51:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-23 02:51:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-23 02:51:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-23 02:51:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-23 02:51:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-23 02:51:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure sas_parse_pr_out_transport_id [2021-11-23 02:51:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_parse_pr_out_transport_id [2021-11-23 02:51:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-23 02:51:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-23 02:51:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure utsname [2021-11-23 02:51:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure utsname [2021-11-23 02:51:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-23 02:51:13,976 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-23 02:51:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-23 02:51:13,976 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-23 02:51:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-23 02:51:13,976 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-23 02:51:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-23 02:51:13,977 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-23 02:51:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used [2021-11-23 02:51:13,977 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used [2021-11-23 02:51:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 02:51:13,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 02:51:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 02:51:13,978 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 02:51:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-23 02:51:13,978 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-23 02:51:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nodeacl [2021-11-23 02:51:13,978 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nodeacl [2021-11-23 02:51:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-23 02:51:13,979 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-23 02:51:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_release [2021-11-23 02:51:13,979 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_release [2021-11-23 02:51:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-23 02:51:13,979 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-23 02:51:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:51:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id_len [2021-11-23 02:51:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id_len [2021-11-23 02:51:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_port_link [2021-11-23 02:51:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_port_link [2021-11-23 02:51:15,054 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:51:15,058 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:51:21,270 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume #t~switch208;#res := ~ret~1; [2021-11-23 02:51:21,271 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume !#t~switch208;#t~switch208 := #t~switch208 || 4 == ~size; [2021-11-23 02:51:21,271 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume 0 != ~tmp___1~4;#res := ~ret~1; [2021-11-23 02:51:21,271 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume !(0 != ~tmp___1~4);#res := ~ret~1; [2021-11-23 02:51:21,271 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7449: havoc #t~switch208; [2021-11-23 02:51:21,271 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474: SUMMARY for call #t~ret209 := ldv__builtin_expect((if 0 != ~ret~1 then 1 else 0), 0); srcloc: null [2021-11-23 02:51:21,271 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume #t~switch208; [2021-11-23 02:51:21,272 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume !#t~switch208;#t~switch208 := #t~switch208 || 16 == ~size; [2021-11-23 02:51:21,272 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474-1: assume -9223372036854775808 <= #t~ret209 && #t~ret209 <= 9223372036854775807;~tmp___0~9 := #t~ret209;havoc #t~ret209; [2021-11-23 02:51:21,272 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch208;#res := ~ret~1; [2021-11-23 02:51:21,272 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497-1: ~tmp___2~3 := #t~ret211;havoc #t~ret211;#res := (if ~tmp___2~3 % 18446744073709551616 % 4294967296 <= 2147483647 then ~tmp___2~3 % 18446744073709551616 % 4294967296 else ~tmp___2~3 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-23 02:51:21,272 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497: SUMMARY for call #t~ret211 := copy_user_generic(~dst.base, ~dst.offset, ~src.base, ~src.offset, ~size); srcloc: null [2021-11-23 02:51:21,272 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch208;#t~switch208 := #t~switch208 || 2 == ~size; [2021-11-23 02:51:21,272 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume #t~switch208;#res := ~ret~1; [2021-11-23 02:51:21,272 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume !#t~switch208;#t~switch208 := #t~switch208 || 8 == ~size; [2021-11-23 02:51:21,272 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487-1: assume -9223372036854775808 <= #t~ret210 && #t~ret210 <= 9223372036854775807;~tmp___1~4 := #t~ret210;havoc #t~ret210; [2021-11-23 02:51:21,273 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487: SUMMARY for call #t~ret210 := ldv__builtin_expect((if 0 != ~ret~1 then 1 else 0), 0); srcloc: null [2021-11-23 02:51:21,273 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume #t~switch208; [2021-11-23 02:51:21,273 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume !#t~switch208;#t~switch208 := true; [2021-11-23 02:51:21,273 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume 0 != ~tmp___0~9;#res := ~ret~1; [2021-11-23 02:51:21,273 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume !(0 != ~tmp___0~9);#res := ~ret~1; [2021-11-23 02:51:21,273 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume #t~switch208; [2021-11-23 02:51:21,273 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume !#t~switch208; [2021-11-23 02:51:21,273 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume #t~switch208;#res := ~ret~1; [2021-11-23 02:51:21,273 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume !#t~switch208;#t~switch208 := #t~switch208 || 10 == ~size; [2021-11-23 02:51:27,175 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:51:28,957 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:51:28,957 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:51:28,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:28 BoogieIcfgContainer [2021-11-23 02:51:28,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:51:28,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:51:28,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:51:28,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:51:28,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:51:07" (1/3) ... [2021-11-23 02:51:28,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1c9bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:28, skipping insertion in model container [2021-11-23 02:51:28,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:12" (2/3) ... [2021-11-23 02:51:28,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1c9bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:28, skipping insertion in model container [2021-11-23 02:51:28,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:28" (3/3) ... [2021-11-23 02:51:28,974 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-23 02:51:28,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:51:28,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:51:29,074 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:51:29,093 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 02:51:29,098 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:51:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 1963 states, 1205 states have (on average 1.3402489626556016) internal successors, (1615), 1255 states have internal predecessors, (1615), 642 states have call successors, (642), 114 states have call predecessors, (642), 114 states have return successors, (642), 630 states have call predecessors, (642), 642 states have call successors, (642) [2021-11-23 02:51:29,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:51:29,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:29,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:51:29,202 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:29,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:29,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2071767388, now seen corresponding path program 1 times [2021-11-23 02:51:29,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:29,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389069286] [2021-11-23 02:51:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:29,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:29,868 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 02:51:29,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:29,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389069286] [2021-11-23 02:51:29,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389069286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:29,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:51:29,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:51:29,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630939359] [2021-11-23 02:51:29,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:29,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:51:29,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:29,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:51:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:51:29,931 INFO L87 Difference]: Start difference. First operand has 1963 states, 1205 states have (on average 1.3402489626556016) internal successors, (1615), 1255 states have internal predecessors, (1615), 642 states have call successors, (642), 114 states have call predecessors, (642), 114 states have return successors, (642), 630 states have call predecessors, (642), 642 states have call successors, (642) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 02:51:32,371 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 02:51:34,425 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 02:51:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:51:36,565 INFO L93 Difference]: Finished difference Result 5819 states and 8724 transitions. [2021-11-23 02:51:36,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:51:36,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 13 [2021-11-23 02:51:36,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:51:36,627 INFO L225 Difference]: With dead ends: 5819 [2021-11-23 02:51:36,627 INFO L226 Difference]: Without dead ends: 3867 [2021-11-23 02:51:36,653 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 02:51:36,657 INFO L933 BasicCegarLoop]: 3274 mSDtfsCounter, 2867 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2869 SdHoareTripleChecker+Valid, 5838 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:51:36,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2869 Valid, 5838 Invalid, 558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 555 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-11-23 02:51:36,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2021-11-23 02:51:37,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3858. [2021-11-23 02:51:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 2368 states have (on average 1.3327702702702702) internal successors, (3156), 2452 states have internal predecessors, (3156), 1264 states have call successors, (1264), 226 states have call predecessors, (1264), 225 states have return successors, (1252), 1228 states have call predecessors, (1252), 1252 states have call successors, (1252) [2021-11-23 02:51:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5672 transitions. [2021-11-23 02:51:37,103 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5672 transitions. Word has length 13 [2021-11-23 02:51:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:51:37,104 INFO L470 AbstractCegarLoop]: Abstraction has 3858 states and 5672 transitions. [2021-11-23 02:51:37,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 02:51:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5672 transitions. [2021-11-23 02:51:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:51:37,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:37,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:51:37,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:51:37,107 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash -200871227, now seen corresponding path program 1 times [2021-11-23 02:51:37,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:37,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974336390] [2021-11-23 02:51:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:37,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:37,275 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 02:51:37,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:37,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974336390] [2021-11-23 02:51:37,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974336390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:37,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:51:37,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:51:37,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898300684] [2021-11-23 02:51:37,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:37,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:51:37,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:37,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:51:37,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:51:37,280 INFO L87 Difference]: Start difference. First operand 3858 states and 5672 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 02:51:39,525 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 02:51:41,570 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 02:51:43,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:51:43,712 INFO L93 Difference]: Finished difference Result 3871 states and 5684 transitions. [2021-11-23 02:51:43,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:51:43,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 14 [2021-11-23 02:51:43,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:51:43,755 INFO L225 Difference]: With dead ends: 3871 [2021-11-23 02:51:43,757 INFO L226 Difference]: Without dead ends: 3868 [2021-11-23 02:51:43,761 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 02:51:43,762 INFO L933 BasicCegarLoop]: 3253 mSDtfsCounter, 2844 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2846 SdHoareTripleChecker+Valid, 5802 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:51:43,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2846 Valid, 5802 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 554 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 02:51:43,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-11-23 02:51:44,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3859. [2021-11-23 02:51:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 2369 states have (on average 1.3326298016040523) internal successors, (3157), 2453 states have internal predecessors, (3157), 1264 states have call successors, (1264), 226 states have call predecessors, (1264), 225 states have return successors, (1252), 1228 states have call predecessors, (1252), 1252 states have call successors, (1252) [2021-11-23 02:51:44,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 5673 transitions. [2021-11-23 02:51:44,209 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 5673 transitions. Word has length 14 [2021-11-23 02:51:44,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:51:44,210 INFO L470 AbstractCegarLoop]: Abstraction has 3859 states and 5673 transitions. [2021-11-23 02:51:44,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 02:51:44,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 5673 transitions. [2021-11-23 02:51:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 02:51:44,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:44,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:51:44,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:51:44,213 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:44,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1933186689, now seen corresponding path program 1 times [2021-11-23 02:51:44,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:44,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213482863] [2021-11-23 02:51:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:44,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:44,437 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 02:51:44,437 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:44,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213482863] [2021-11-23 02:51:44,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213482863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:44,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:51:44,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:51:44,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239286836] [2021-11-23 02:51:44,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:44,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:51:44,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:44,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:51:44,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:51:44,441 INFO L87 Difference]: Start difference. First operand 3859 states and 5673 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 02:51:46,703 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 02:51:48,743 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 02:51:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:51:50,787 INFO L93 Difference]: Finished difference Result 3872 states and 5685 transitions. [2021-11-23 02:51:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:51:50,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 15 [2021-11-23 02:51:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:51:50,830 INFO L225 Difference]: With dead ends: 3872 [2021-11-23 02:51:50,830 INFO L226 Difference]: Without dead ends: 3869 [2021-11-23 02:51:50,836 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 02:51:50,841 INFO L933 BasicCegarLoop]: 3246 mSDtfsCounter, 2841 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2843 SdHoareTripleChecker+Valid, 5798 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:51:50,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2843 Valid, 5798 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 553 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-11-23 02:51:50,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3869 states. [2021-11-23 02:51:51,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3869 to 3860. [2021-11-23 02:51:51,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3860 states, 2370 states have (on average 1.3324894514767933) internal successors, (3158), 2454 states have internal predecessors, (3158), 1264 states have call successors, (1264), 226 states have call predecessors, (1264), 225 states have return successors, (1252), 1228 states have call predecessors, (1252), 1252 states have call successors, (1252) [2021-11-23 02:51:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 5674 transitions. [2021-11-23 02:51:51,137 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 5674 transitions. Word has length 15 [2021-11-23 02:51:51,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:51:51,138 INFO L470 AbstractCegarLoop]: Abstraction has 3860 states and 5674 transitions. [2021-11-23 02:51:51,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 02:51:51,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 5674 transitions. [2021-11-23 02:51:51,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:51:51,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:51,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:51:51,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:51:51,141 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:51,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:51,143 INFO L85 PathProgramCache]: Analyzing trace with hash 199613704, now seen corresponding path program 1 times [2021-11-23 02:51:51,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:51,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578148925] [2021-11-23 02:51:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:51,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:51,487 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 02:51:51,488 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:51,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578148925] [2021-11-23 02:51:51,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578148925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:51,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:51:51,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:51:51,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983914063] [2021-11-23 02:51:51,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:51,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:51:51,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:51:51,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:51:51,491 INFO L87 Difference]: Start difference. First operand 3860 states and 5674 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 02:51:53,797 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 02:51:55,856 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 02:51:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:51:57,395 INFO L93 Difference]: Finished difference Result 9369 states and 13616 transitions. [2021-11-23 02:51:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:51:57,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16 [2021-11-23 02:51:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:51:57,447 INFO L225 Difference]: With dead ends: 9369 [2021-11-23 02:51:57,448 INFO L226 Difference]: Without dead ends: 5548 [2021-11-23 02:51:57,474 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 02:51:57,476 INFO L933 BasicCegarLoop]: 2992 mSDtfsCounter, 1563 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 5425 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:51:57,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 5425 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 562 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2021-11-23 02:51:57,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2021-11-23 02:51:57,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 5520. [2021-11-23 02:51:57,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5520 states, 3348 states have (on average 1.3186977299880525) internal successors, (4415), 3490 states have internal predecessors, (4415), 1771 states have call successors, (1771), 404 states have call predecessors, (1771), 400 states have return successors, (1770), 1699 states have call predecessors, (1770), 1755 states have call successors, (1770) [2021-11-23 02:51:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5520 states to 5520 states and 7956 transitions. [2021-11-23 02:51:57,936 INFO L78 Accepts]: Start accepts. Automaton has 5520 states and 7956 transitions. Word has length 16 [2021-11-23 02:51:57,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:51:57,937 INFO L470 AbstractCegarLoop]: Abstraction has 5520 states and 7956 transitions. [2021-11-23 02:51:57,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 02:51:57,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5520 states and 7956 transitions. [2021-11-23 02:51:57,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:51:57,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:57,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:51:57,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:51:57,947 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:57,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:57,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1891921314, now seen corresponding path program 1 times [2021-11-23 02:51:57,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:57,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270243459] [2021-11-23 02:51:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:57,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:58,129 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 02:51:58,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:58,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270243459] [2021-11-23 02:51:58,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270243459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:58,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:51:58,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:51:58,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670898953] [2021-11-23 02:51:58,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:58,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:51:58,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:58,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:51:58,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:51:58,132 INFO L87 Difference]: Start difference. First operand 5520 states and 7956 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 02:52:00,395 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 02:52:02,444 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 02:52:04,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:04,392 INFO L93 Difference]: Finished difference Result 8288 states and 11952 transitions. [2021-11-23 02:52:04,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:04,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 17 [2021-11-23 02:52:04,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:04,473 INFO L225 Difference]: With dead ends: 8288 [2021-11-23 02:52:04,473 INFO L226 Difference]: Without dead ends: 8284 [2021-11-23 02:52:04,480 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 02:52:04,481 INFO L933 BasicCegarLoop]: 3184 mSDtfsCounter, 2788 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2790 SdHoareTripleChecker+Valid, 5640 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:04,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2790 Valid, 5640 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 552 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 02:52:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2021-11-23 02:52:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8256. [2021-11-23 02:52:04,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8256 states, 5028 states have (on average 1.3219968178202068) internal successors, (6647), 5242 states have internal predecessors, (6647), 2623 states have call successors, (2623), 613 states have call predecessors, (2623), 604 states have return successors, (2647), 2510 states have call predecessors, (2647), 2607 states have call successors, (2647) [2021-11-23 02:52:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8256 states to 8256 states and 11917 transitions. [2021-11-23 02:52:05,020 INFO L78 Accepts]: Start accepts. Automaton has 8256 states and 11917 transitions. Word has length 17 [2021-11-23 02:52:05,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:05,021 INFO L470 AbstractCegarLoop]: Abstraction has 8256 states and 11917 transitions. [2021-11-23 02:52:05,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 02:52:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand 8256 states and 11917 transitions. [2021-11-23 02:52:05,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:52:05,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:05,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:05,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:52:05,023 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:05,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:05,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1481112757, now seen corresponding path program 1 times [2021-11-23 02:52:05,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:05,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984075723] [2021-11-23 02:52:05,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:05,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:05,189 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 02:52:05,190 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:05,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984075723] [2021-11-23 02:52:05,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984075723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:05,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:05,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:05,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034981626] [2021-11-23 02:52:05,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:05,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:05,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:05,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:05,193 INFO L87 Difference]: Start difference. First operand 8256 states and 11917 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 02:52:07,421 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 02:52:09,475 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 02:52:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:11,322 INFO L93 Difference]: Finished difference Result 13689 states and 19812 transitions. [2021-11-23 02:52:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:11,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 18 [2021-11-23 02:52:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:11,421 INFO L225 Difference]: With dead ends: 13689 [2021-11-23 02:52:11,421 INFO L226 Difference]: Without dead ends: 13668 [2021-11-23 02:52:11,433 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 02:52:11,434 INFO L933 BasicCegarLoop]: 3193 mSDtfsCounter, 2783 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2785 SdHoareTripleChecker+Valid, 5662 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:11,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2785 Valid, 5662 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 550 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-23 02:52:11,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13668 states. [2021-11-23 02:52:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13668 to 13639. [2021-11-23 02:52:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13639 states, 8333 states have (on average 1.3250930037201487) internal successors, (11042), 8699 states have internal predecessors, (11042), 4313 states have call successors, (4313), 1019 states have call predecessors, (4313), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2021-11-23 02:52:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13639 states to 13639 states and 19746 transitions. [2021-11-23 02:52:12,311 INFO L78 Accepts]: Start accepts. Automaton has 13639 states and 19746 transitions. Word has length 18 [2021-11-23 02:52:12,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:12,312 INFO L470 AbstractCegarLoop]: Abstraction has 13639 states and 19746 transitions. [2021-11-23 02:52:12,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 02:52:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 13639 states and 19746 transitions. [2021-11-23 02:52:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 02:52:12,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:12,318 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:52:12,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:52:12,319 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:12,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:12,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1164194431, now seen corresponding path program 1 times [2021-11-23 02:52:12,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:12,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626496047] [2021-11-23 02:52:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:12,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:52:12,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:12,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626496047] [2021-11-23 02:52:12,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626496047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:12,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:12,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:52:12,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525757675] [2021-11-23 02:52:12,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:12,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:52:12,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:12,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:52:12,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:52:12,594 INFO L87 Difference]: Start difference. First operand 13639 states and 19746 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 02:52:15,000 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 02:52:17,066 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 02:52:19,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:19,706 INFO L93 Difference]: Finished difference Result 28779 states and 42709 transitions. [2021-11-23 02:52:19,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:52:19,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2021-11-23 02:52:19,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:19,803 INFO L225 Difference]: With dead ends: 28779 [2021-11-23 02:52:19,803 INFO L226 Difference]: Without dead ends: 17766 [2021-11-23 02:52:19,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:52:19,866 INFO L933 BasicCegarLoop]: 3070 mSDtfsCounter, 488 mSDsluCounter, 6036 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 199 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 8555 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:19,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 8555 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 878 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-11-23 02:52:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17766 states. [2021-11-23 02:52:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17766 to 13641. [2021-11-23 02:52:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13641 states, 8335 states have (on average 1.3250149970005998) internal successors, (11044), 8701 states have internal predecessors, (11044), 4313 states have call successors, (4313), 1019 states have call predecessors, (4313), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2021-11-23 02:52:20,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 19748 transitions. [2021-11-23 02:52:21,001 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 19748 transitions. Word has length 35 [2021-11-23 02:52:21,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:21,002 INFO L470 AbstractCegarLoop]: Abstraction has 13641 states and 19748 transitions. [2021-11-23 02:52:21,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 02:52:21,003 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 19748 transitions. [2021-11-23 02:52:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 02:52:21,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:21,010 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:52:21,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:52:21,010 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:21,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:21,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1804436506, now seen corresponding path program 1 times [2021-11-23 02:52:21,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:21,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274810242] [2021-11-23 02:52:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:21,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:52:21,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:21,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274810242] [2021-11-23 02:52:21,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274810242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:21,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:21,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:52:21,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543430498] [2021-11-23 02:52:21,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:21,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:52:21,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:21,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:52:21,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:52:21,274 INFO L87 Difference]: Start difference. First operand 13641 states and 19748 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-23 02:52:23,602 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 02:52:25,654 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 02:52:27,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:27,514 INFO L93 Difference]: Finished difference Result 15847 states and 23451 transitions. [2021-11-23 02:52:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:52:27,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2021-11-23 02:52:27,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:27,601 INFO L225 Difference]: With dead ends: 15847 [2021-11-23 02:52:27,602 INFO L226 Difference]: Without dead ends: 15832 [2021-11-23 02:52:27,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:52:27,615 INFO L933 BasicCegarLoop]: 2967 mSDtfsCounter, 469 mSDsluCounter, 5623 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 193 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 8080 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:27,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 8080 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 831 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-11-23 02:52:27,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15832 states. [2021-11-23 02:52:28,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15832 to 13643. [2021-11-23 02:52:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13643 states, 8337 states have (on average 1.3249370277078085) internal successors, (11046), 8703 states have internal predecessors, (11046), 4313 states have call successors, (4313), 1019 states have call predecessors, (4313), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2021-11-23 02:52:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13643 states to 13643 states and 19750 transitions. [2021-11-23 02:52:28,608 INFO L78 Accepts]: Start accepts. Automaton has 13643 states and 19750 transitions. Word has length 39 [2021-11-23 02:52:28,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:28,609 INFO L470 AbstractCegarLoop]: Abstraction has 13643 states and 19750 transitions. [2021-11-23 02:52:28,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-23 02:52:28,610 INFO L276 IsEmpty]: Start isEmpty. Operand 13643 states and 19750 transitions. [2021-11-23 02:52:28,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 02:52:28,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:28,615 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:52:28,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:52:28,615 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:28,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash -40717220, now seen corresponding path program 1 times [2021-11-23 02:52:28,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:28,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594348432] [2021-11-23 02:52:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:28,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:52:28,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:28,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594348432] [2021-11-23 02:52:28,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594348432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:28,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:28,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:28,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402381514] [2021-11-23 02:52:28,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:28,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:28,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:28,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:28,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:28,919 INFO L87 Difference]: Start difference. First operand 13643 states and 19750 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:52:31,131 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 02:52:33,179 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 02:52:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:34,003 INFO L93 Difference]: Finished difference Result 13645 states and 19751 transitions. [2021-11-23 02:52:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:34,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2021-11-23 02:52:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:34,061 INFO L225 Difference]: With dead ends: 13645 [2021-11-23 02:52:34,061 INFO L226 Difference]: Without dead ends: 13642 [2021-11-23 02:52:34,071 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 02:52:34,072 INFO L933 BasicCegarLoop]: 2586 mSDtfsCounter, 2837 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2839 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:34,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2839 Valid, 2586 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 02:52:34,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13642 states. [2021-11-23 02:52:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13642 to 13642. [2021-11-23 02:52:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13642 states, 8337 states have (on average 1.3239774499220343) internal successors, (11038), 8702 states have internal predecessors, (11038), 4312 states have call successors, (4312), 1019 states have call predecessors, (4312), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2021-11-23 02:52:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13642 states to 13642 states and 19741 transitions. [2021-11-23 02:52:34,962 INFO L78 Accepts]: Start accepts. Automaton has 13642 states and 19741 transitions. Word has length 43 [2021-11-23 02:52:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:34,963 INFO L470 AbstractCegarLoop]: Abstraction has 13642 states and 19741 transitions. [2021-11-23 02:52:34,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:52:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 13642 states and 19741 transitions. [2021-11-23 02:52:34,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 02:52:34,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:34,967 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:52:34,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:52:34,967 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:34,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:34,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1263384635, now seen corresponding path program 1 times [2021-11-23 02:52:34,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:34,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220914830] [2021-11-23 02:52:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:34,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:52:35,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:35,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220914830] [2021-11-23 02:52:35,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220914830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:35,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:35,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:35,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431823489] [2021-11-23 02:52:35,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:35,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:35,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:35,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:35,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:35,203 INFO L87 Difference]: Start difference. First operand 13642 states and 19741 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:52:37,415 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 02:52:39,479 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 02:52:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:40,488 INFO L93 Difference]: Finished difference Result 13644 states and 19742 transitions. [2021-11-23 02:52:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:40,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2021-11-23 02:52:40,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:40,551 INFO L225 Difference]: With dead ends: 13644 [2021-11-23 02:52:40,552 INFO L226 Difference]: Without dead ends: 13641 [2021-11-23 02:52:40,562 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 02:52:40,563 INFO L933 BasicCegarLoop]: 2584 mSDtfsCounter, 2834 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:40,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2836 Valid, 2584 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 02:52:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13641 states. [2021-11-23 02:52:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13641 to 13641. [2021-11-23 02:52:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13641 states, 8337 states have (on average 1.32301787213626) internal successors, (11030), 8701 states have internal predecessors, (11030), 4311 states have call successors, (4311), 1019 states have call predecessors, (4311), 992 states have return successors, (4391), 4102 states have call predecessors, (4391), 4297 states have call successors, (4391) [2021-11-23 02:52:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 19732 transitions. [2021-11-23 02:52:41,520 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 19732 transitions. Word has length 44 [2021-11-23 02:52:41,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:41,521 INFO L470 AbstractCegarLoop]: Abstraction has 13641 states and 19732 transitions. [2021-11-23 02:52:41,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:52:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 19732 transitions. [2021-11-23 02:52:41,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 02:52:41,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:41,525 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:52:41,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:52:41,525 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:41,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash -947465374, now seen corresponding path program 1 times [2021-11-23 02:52:41,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:41,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055828437] [2021-11-23 02:52:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:41,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:52:41,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:41,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055828437] [2021-11-23 02:52:41,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055828437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:41,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:41,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:41,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969104155] [2021-11-23 02:52:41,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:41,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:41,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:41,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:41,681 INFO L87 Difference]: Start difference. First operand 13641 states and 19732 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:52:43,978 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 02:52:46,025 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 02:52:47,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:47,386 INFO L93 Difference]: Finished difference Result 22366 states and 31448 transitions. [2021-11-23 02:52:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:47,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2021-11-23 02:52:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:47,459 INFO L225 Difference]: With dead ends: 22366 [2021-11-23 02:52:47,459 INFO L226 Difference]: Without dead ends: 13012 [2021-11-23 02:52:47,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 02:52:47,505 INFO L933 BasicCegarLoop]: 2491 mSDtfsCounter, 1345 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:47,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 3782 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 02:52:47,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13012 states. [2021-11-23 02:52:48,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13012 to 12985. [2021-11-23 02:52:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12985 states, 7870 states have (on average 1.3027954256670902) internal successors, (10253), 8167 states have internal predecessors, (10253), 4001 states have call successors, (4001), 1143 states have call predecessors, (4001), 1113 states have return successors, (4058), 3829 states have call predecessors, (4058), 3988 states have call successors, (4058) [2021-11-23 02:52:48,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12985 states to 12985 states and 18312 transitions. [2021-11-23 02:52:48,172 INFO L78 Accepts]: Start accepts. Automaton has 12985 states and 18312 transitions. Word has length 44 [2021-11-23 02:52:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:48,173 INFO L470 AbstractCegarLoop]: Abstraction has 12985 states and 18312 transitions. [2021-11-23 02:52:48,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:52:48,173 INFO L276 IsEmpty]: Start isEmpty. Operand 12985 states and 18312 transitions. [2021-11-23 02:52:48,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 02:52:48,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:48,177 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:52:48,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:52:48,177 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:48,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:48,178 INFO L85 PathProgramCache]: Analyzing trace with hash -511363969, now seen corresponding path program 1 times [2021-11-23 02:52:48,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:48,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471798414] [2021-11-23 02:52:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:48,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:52:48,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:48,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471798414] [2021-11-23 02:52:48,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471798414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:48,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:48,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:48,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269881786] [2021-11-23 02:52:48,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:48,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:48,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:48,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:48,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:48,359 INFO L87 Difference]: Start difference. First operand 12985 states and 18312 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:52:50,569 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 02:52:52,618 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 02:52:53,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:53,547 INFO L93 Difference]: Finished difference Result 12987 states and 18313 transitions. [2021-11-23 02:52:53,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:53,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2021-11-23 02:52:53,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:53,592 INFO L225 Difference]: With dead ends: 12987 [2021-11-23 02:52:53,593 INFO L226 Difference]: Without dead ends: 12966 [2021-11-23 02:52:53,600 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 02:52:53,601 INFO L933 BasicCegarLoop]: 2347 mSDtfsCounter, 2583 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2585 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:53,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2585 Valid, 2347 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2021-11-23 02:52:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2021-11-23 02:52:54,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 12966. [2021-11-23 02:52:54,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12966 states, 7858 states have (on average 1.301985237974039) internal successors, (10231), 8154 states have internal predecessors, (10231), 3996 states have call successors, (3996), 1141 states have call predecessors, (3996), 1111 states have return successors, (4054), 3825 states have call predecessors, (4054), 3984 states have call successors, (4054) [2021-11-23 02:52:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12966 states to 12966 states and 18281 transitions. [2021-11-23 02:52:54,314 INFO L78 Accepts]: Start accepts. Automaton has 12966 states and 18281 transitions. Word has length 45 [2021-11-23 02:52:54,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:54,314 INFO L470 AbstractCegarLoop]: Abstraction has 12966 states and 18281 transitions. [2021-11-23 02:52:54,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:52:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 12966 states and 18281 transitions. [2021-11-23 02:52:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 02:52:54,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:54,318 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:52:54,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:52:54,319 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:54,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:54,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1326445064, now seen corresponding path program 1 times [2021-11-23 02:52:54,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:54,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033569585] [2021-11-23 02:52:54,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:54,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:52:54,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:54,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033569585] [2021-11-23 02:52:54,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033569585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:54,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:52:54,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:52:54,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962702782] [2021-11-23 02:52:54,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:54,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:52:54,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:54,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:52:54,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:52:54,504 INFO L87 Difference]: Start difference. First operand 12966 states and 18281 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:52:56,710 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 02:52:58,771 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 02:52:59,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:59,965 INFO L93 Difference]: Finished difference Result 12971 states and 18284 transitions. [2021-11-23 02:52:59,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:52:59,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2021-11-23 02:52:59,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:00,024 INFO L225 Difference]: With dead ends: 12971 [2021-11-23 02:53:00,025 INFO L226 Difference]: Without dead ends: 12948 [2021-11-23 02:53:00,034 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 02:53:00,035 INFO L933 BasicCegarLoop]: 2402 mSDtfsCounter, 1429 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:00,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 3614 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 411 Invalid, 2 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 02:53:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12948 states. [2021-11-23 02:53:00,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12948 to 12858. [2021-11-23 02:53:00,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12858 states, 7793 states have (on average 1.3032208392146798) internal successors, (10156), 8079 states have internal predecessors, (10156), 3959 states have call successors, (3959), 1127 states have call predecessors, (3959), 1105 states have return successors, (4018), 3806 states have call predecessors, (4018), 3948 states have call successors, (4018) [2021-11-23 02:53:00,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12858 states to 12858 states and 18133 transitions. [2021-11-23 02:53:00,808 INFO L78 Accepts]: Start accepts. Automaton has 12858 states and 18133 transitions. Word has length 46 [2021-11-23 02:53:00,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:00,809 INFO L470 AbstractCegarLoop]: Abstraction has 12858 states and 18133 transitions. [2021-11-23 02:53:00,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:53:00,809 INFO L276 IsEmpty]: Start isEmpty. Operand 12858 states and 18133 transitions. [2021-11-23 02:53:00,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 02:53:00,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:00,813 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:53:00,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:53:00,813 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:00,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1831012190, now seen corresponding path program 1 times [2021-11-23 02:53:00,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:00,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747289852] [2021-11-23 02:53:00,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:00,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:53:00,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:00,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747289852] [2021-11-23 02:53:00,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747289852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:00,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:00,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:53:00,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818034418] [2021-11-23 02:53:00,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:00,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:53:00,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:53:00,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:53:01,000 INFO L87 Difference]: Start difference. First operand 12858 states and 18133 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:53:03,214 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 02:53:05,267 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 02:53:06,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:06,163 INFO L93 Difference]: Finished difference Result 12896 states and 18158 transitions. [2021-11-23 02:53:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:53:06,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2021-11-23 02:53:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:06,206 INFO L225 Difference]: With dead ends: 12896 [2021-11-23 02:53:06,206 INFO L226 Difference]: Without dead ends: 12868 [2021-11-23 02:53:06,213 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 02:53:06,214 INFO L933 BasicCegarLoop]: 2340 mSDtfsCounter, 2513 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2515 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:06,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2515 Valid, 2405 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 02:53:06,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12868 states. [2021-11-23 02:53:06,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12868 to 12816. [2021-11-23 02:53:06,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12816 states, 7770 states have (on average 1.302960102960103) internal successors, (10124), 8049 states have internal predecessors, (10124), 3931 states have call successors, (3931), 1129 states have call predecessors, (3931), 1114 states have return successors, (3992), 3792 states have call predecessors, (3992), 3922 states have call successors, (3992) [2021-11-23 02:53:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12816 states to 12816 states and 18047 transitions. [2021-11-23 02:53:06,977 INFO L78 Accepts]: Start accepts. Automaton has 12816 states and 18047 transitions. Word has length 47 [2021-11-23 02:53:06,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:06,977 INFO L470 AbstractCegarLoop]: Abstraction has 12816 states and 18047 transitions. [2021-11-23 02:53:06,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:53:06,978 INFO L276 IsEmpty]: Start isEmpty. Operand 12816 states and 18047 transitions. [2021-11-23 02:53:06,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 02:53:06,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:06,981 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:53:06,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 02:53:06,981 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:06,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash -927934389, now seen corresponding path program 1 times [2021-11-23 02:53:06,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:06,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286990532] [2021-11-23 02:53:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:06,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:53:07,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:07,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286990532] [2021-11-23 02:53:07,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286990532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:07,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:07,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:53:07,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217868530] [2021-11-23 02:53:07,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:07,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:53:07,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:07,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:53:07,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:53:07,148 INFO L87 Difference]: Start difference. First operand 12816 states and 18047 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:53:09,362 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 02:53:11,411 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 02:53:12,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:12,288 INFO L93 Difference]: Finished difference Result 12830 states and 18054 transitions. [2021-11-23 02:53:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:53:12,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2021-11-23 02:53:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:12,322 INFO L225 Difference]: With dead ends: 12830 [2021-11-23 02:53:12,322 INFO L226 Difference]: Without dead ends: 12788 [2021-11-23 02:53:12,327 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 02:53:12,328 INFO L933 BasicCegarLoop]: 2338 mSDtfsCounter, 2509 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2511 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:12,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2511 Valid, 2394 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 272 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 02:53:12,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12788 states. [2021-11-23 02:53:13,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12788 to 12745. [2021-11-23 02:53:13,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12745 states, 7727 states have (on average 1.3023165523489064) internal successors, (10063), 8005 states have internal predecessors, (10063), 3900 states have call successors, (3900), 1121 states have call predecessors, (3900), 1117 states have return successors, (3963), 3773 states have call predecessors, (3963), 3893 states have call successors, (3963) [2021-11-23 02:53:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 17926 transitions. [2021-11-23 02:53:13,074 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 17926 transitions. Word has length 48 [2021-11-23 02:53:13,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:13,074 INFO L470 AbstractCegarLoop]: Abstraction has 12745 states and 17926 transitions. [2021-11-23 02:53:13,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:53:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 17926 transitions. [2021-11-23 02:53:13,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 02:53:13,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:13,081 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:53:13,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 02:53:13,081 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:13,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2009586775, now seen corresponding path program 1 times [2021-11-23 02:53:13,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:13,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945647789] [2021-11-23 02:53:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:13,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:53:13,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:13,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945647789] [2021-11-23 02:53:13,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945647789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:13,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:13,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:53:13,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910687605] [2021-11-23 02:53:13,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:13,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:53:13,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:13,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:53:13,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:53:13,251 INFO L87 Difference]: Start difference. First operand 12745 states and 17926 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 02:53:15,723 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 02:53:17,791 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 02:53:20,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:20,178 INFO L93 Difference]: Finished difference Result 14704 states and 20672 transitions. [2021-11-23 02:53:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:53:20,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2021-11-23 02:53:20,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:20,224 INFO L225 Difference]: With dead ends: 14704 [2021-11-23 02:53:20,224 INFO L226 Difference]: Without dead ends: 12745 [2021-11-23 02:53:20,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:53:20,236 INFO L933 BasicCegarLoop]: 2314 mSDtfsCounter, 3 mSDsluCounter, 7711 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9247 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:20,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 9247 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1055 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-11-23 02:53:20,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12745 states. [2021-11-23 02:53:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12745 to 12745. [2021-11-23 02:53:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12745 states, 7727 states have (on average 1.3021871360165653) internal successors, (10062), 8004 states have internal predecessors, (10062), 3900 states have call successors, (3900), 1121 states have call predecessors, (3900), 1117 states have return successors, (3963), 3773 states have call predecessors, (3963), 3893 states have call successors, (3963) [2021-11-23 02:53:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 17925 transitions. [2021-11-23 02:53:20,867 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 17925 transitions. Word has length 57 [2021-11-23 02:53:20,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:20,868 INFO L470 AbstractCegarLoop]: Abstraction has 12745 states and 17925 transitions. [2021-11-23 02:53:20,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 02:53:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 17925 transitions. [2021-11-23 02:53:20,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 02:53:20,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:20,874 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:53:20,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 02:53:20,874 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:20,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:20,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1117907602, now seen corresponding path program 1 times [2021-11-23 02:53:20,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:20,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886143013] [2021-11-23 02:53:20,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:20,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:53:21,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:21,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886143013] [2021-11-23 02:53:21,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886143013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:21,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:21,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:53:21,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733128532] [2021-11-23 02:53:21,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:21,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:53:21,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:53:21,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:53:21,047 INFO L87 Difference]: Start difference. First operand 12745 states and 17925 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-23 02:53:23,205 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 02:53:25,650 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 02:53:27,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:27,994 INFO L93 Difference]: Finished difference Result 25439 states and 35786 transitions. [2021-11-23 02:53:27,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:53:27,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2021-11-23 02:53:27,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:28,055 INFO L225 Difference]: With dead ends: 25439 [2021-11-23 02:53:28,055 INFO L226 Difference]: Without dead ends: 12727 [2021-11-23 02:53:28,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:53:28,094 INFO L933 BasicCegarLoop]: 2313 mSDtfsCounter, 4 mSDsluCounter, 7706 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 9241 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:28,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 9241 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1051 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 02:53:28,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12727 states. [2021-11-23 02:53:28,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12727 to 12727. [2021-11-23 02:53:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12727 states, 7717 states have (on average 1.302060386160425) internal successors, (10048), 7994 states have internal predecessors, (10048), 3896 states have call successors, (3896), 1117 states have call predecessors, (3896), 1113 states have return successors, (3959), 3769 states have call predecessors, (3959), 3889 states have call successors, (3959) [2021-11-23 02:53:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 17903 transitions. [2021-11-23 02:53:28,809 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 17903 transitions. Word has length 61 [2021-11-23 02:53:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:28,810 INFO L470 AbstractCegarLoop]: Abstraction has 12727 states and 17903 transitions. [2021-11-23 02:53:28,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-23 02:53:28,810 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 17903 transitions. [2021-11-23 02:53:28,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 02:53:28,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:28,818 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:28,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 02:53:28,819 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:28,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash -889745118, now seen corresponding path program 1 times [2021-11-23 02:53:28,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:28,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651603704] [2021-11-23 02:53:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:28,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:53:30,772 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:30,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651603704] [2021-11-23 02:53:30,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651603704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:53:30,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:53:30,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-23 02:53:30,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348251807] [2021-11-23 02:53:30,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:53:30,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 02:53:30,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:53:30,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 02:53:30,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:53:30,774 INFO L87 Difference]: Start difference. First operand 12727 states and 17903 transitions. Second operand has 16 states, 9 states have (on average 6.0) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-23 02:53:33,806 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 02:53:37,850 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 02:53:47,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:47,106 INFO L93 Difference]: Finished difference Result 12752 states and 17922 transitions. [2021-11-23 02:53:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:53:47,106 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 9 states have (on average 6.0) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 80 [2021-11-23 02:53:47,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:47,130 INFO L225 Difference]: With dead ends: 12752 [2021-11-23 02:53:47,130 INFO L226 Difference]: Without dead ends: 10788 [2021-11-23 02:53:47,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-11-23 02:53:47,139 INFO L933 BasicCegarLoop]: 2182 mSDtfsCounter, 6 mSDsluCounter, 31546 mSDsCounter, 0 mSdLazyCounter, 5466 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30405 SdHoareTripleChecker+Invalid, 5478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 5466 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:47,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 30405 Invalid, 5478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 5466 Invalid, 2 Unknown, 0 Unchecked, 15.4s Time] [2021-11-23 02:53:47,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10788 states. [2021-11-23 02:53:47,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10788 to 10788. [2021-11-23 02:53:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10788 states, 6541 states have (on average 1.3030117719003211) internal successors, (8523), 6784 states have internal predecessors, (8523), 3292 states have call successors, (3292), 958 states have call predecessors, (3292), 954 states have return successors, (3355), 3177 states have call predecessors, (3355), 3285 states have call successors, (3355) [2021-11-23 02:53:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10788 states to 10788 states and 15170 transitions. [2021-11-23 02:53:47,551 INFO L78 Accepts]: Start accepts. Automaton has 10788 states and 15170 transitions. Word has length 80 [2021-11-23 02:53:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:47,551 INFO L470 AbstractCegarLoop]: Abstraction has 10788 states and 15170 transitions. [2021-11-23 02:53:47,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 9 states have (on average 6.0) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-11-23 02:53:47,551 INFO L276 IsEmpty]: Start isEmpty. Operand 10788 states and 15170 transitions. [2021-11-23 02:53:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 02:53:47,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:47,556 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:53:47,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 02:53:47,556 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:47,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1332536016, now seen corresponding path program 1 times [2021-11-23 02:53:47,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:47,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496324208] [2021-11-23 02:53:47,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:47,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:53:55,456 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:54:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:54:02,520 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:54:02,520 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:54:02,522 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:54:02,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 02:54:02,528 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:54:02,531 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:54:02,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:54:02 BoogieIcfgContainer [2021-11-23 02:54:02,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:54:02,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:54:02,720 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:54:02,720 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:54:02,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:28" (3/4) ... [2021-11-23 02:54:02,724 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 02:54:02,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:54:02,724 INFO L158 Benchmark]: Toolchain (without parser) took 175292.00ms. Allocated memory was 130.0MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 75.3MB in the beginning and 812.4MB in the end (delta: -737.1MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2021-11-23 02:54:02,725 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:54:02,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5335.30ms. Allocated memory was 130.0MB in the beginning and 190.8MB in the end (delta: 60.8MB). Free memory was 75.2MB in the beginning and 64.3MB in the end (delta: 10.9MB). Peak memory consumption was 80.6MB. Max. memory is 16.1GB. [2021-11-23 02:54:02,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 575.00ms. Allocated memory is still 190.8MB. Free memory was 64.3MB in the beginning and 70.7MB in the end (delta: -6.4MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-11-23 02:54:02,730 INFO L158 Benchmark]: Boogie Preprocessor took 502.21ms. Allocated memory was 190.8MB in the beginning and 323.0MB in the end (delta: 132.1MB). Free memory was 70.7MB in the beginning and 190.2MB in the end (delta: -119.6MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2021-11-23 02:54:02,733 INFO L158 Benchmark]: RCFGBuilder took 15114.21ms. Allocated memory was 323.0MB in the beginning and 631.2MB in the end (delta: 308.3MB). Free memory was 190.2MB in the beginning and 254.6MB in the end (delta: -64.3MB). Peak memory consumption was 301.6MB. Max. memory is 16.1GB. [2021-11-23 02:54:02,733 INFO L158 Benchmark]: TraceAbstraction took 153752.94ms. Allocated memory was 631.2MB in the beginning and 1.9GB in the end (delta: 1.3GB). Free memory was 254.6MB in the beginning and 812.4MB in the end (delta: -557.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2021-11-23 02:54:02,733 INFO L158 Benchmark]: Witness Printer took 4.45ms. Allocated memory is still 1.9GB. Free memory is still 812.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:54:02,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5335.30ms. Allocated memory was 130.0MB in the beginning and 190.8MB in the end (delta: 60.8MB). Free memory was 75.2MB in the beginning and 64.3MB in the end (delta: 10.9MB). Peak memory consumption was 80.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 575.00ms. Allocated memory is still 190.8MB. Free memory was 64.3MB in the beginning and 70.7MB in the end (delta: -6.4MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 502.21ms. Allocated memory was 190.8MB in the beginning and 323.0MB in the end (delta: 132.1MB). Free memory was 70.7MB in the beginning and 190.2MB in the end (delta: -119.6MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. * RCFGBuilder took 15114.21ms. Allocated memory was 323.0MB in the beginning and 631.2MB in the end (delta: 308.3MB). Free memory was 190.2MB in the beginning and 254.6MB in the end (delta: -64.3MB). Peak memory consumption was 301.6MB. Max. memory is 16.1GB. * TraceAbstraction took 153752.94ms. Allocated memory was 631.2MB in the beginning and 1.9GB in the end (delta: 1.3GB). Free memory was 254.6MB in the beginning and 812.4MB in the end (delta: -557.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 4.45ms. Allocated memory is still 1.9GB. Free memory is still 812.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13668]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 12845, overapproximation of bitwiseAnd at line 12804. Possible FailurePath: [L7687] static unsigned int vhost_zcopy_mask ; [L10792] static struct target_fabric_configfs *tcm_vhost_fabric_configfs ; [L10793] static struct workqueue_struct *tcm_vhost_workqueue ; [L10794-L10797] static struct mutex tcm_vhost_mutex = {{1}, {{{{{0U}}, 3735899821U, 4294967295U, 0xffffffffffffffffUL, {0, {0, 0}, "tcm_vhost_mutex.wait_lock", 0, 0UL}}}}, {& tcm_vhost_mutex.wait_list, & tcm_vhost_mutex.wait_list}, 0, 0, (void *)(& tcm_vhost_mutex), {0, {0, 0}, "tcm_vhost_mutex", 0, 0UL}}; [L10798] static struct list_head tcm_vhost_list = {& tcm_vhost_list, & tcm_vhost_list}; [L12183-L12186] static struct file_operations const vhost_scsi_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_scsi_ioctl, & vhost_scsi_compat_ioctl, 0, & vhost_scsi_open, 0, & vhost_scsi_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L12187-L12188] static struct miscdevice vhost_scsi_misc = {255, "vhost-scsi", & vhost_scsi_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L12540] static struct target_fabric_tpg_attribute tcm_vhost_tpg_nexus = {{"nexus", & __this_module, 420U}, & tcm_vhost_tpg_show_nexus, & tcm_vhost_tpg_store_nexus}; [L12541] static struct configfs_attribute *tcm_vhost_tpg_attrs[2U] = { & tcm_vhost_tpg_nexus.attr, 0}; [L12732] static struct target_fabric_wwn_attribute tcm_vhost_wwn_version = {{"version", & __this_module, 292U}, & tcm_vhost_wwn_show_attr_version, 0}; [L12733] static struct configfs_attribute *tcm_vhost_wwn_attrs[2U] = { & tcm_vhost_wwn_version.attr, 0}; [L12734-L12745] static struct target_core_fabric_ops tcm_vhost_ops = {0, & tcm_vhost_get_fabric_name, & tcm_vhost_get_fabric_proto_ident, & tcm_vhost_get_fabric_wwn, & tcm_vhost_get_tag, & tcm_vhost_get_default_depth, & tcm_vhost_get_pr_transport_id, & tcm_vhost_get_pr_transport_id_len, & tcm_vhost_parse_pr_out_transport_id, & tcm_vhost_check_true, & tcm_vhost_check_true, & tcm_vhost_check_false, & tcm_vhost_check_false, 0, & tcm_vhost_alloc_fabric_acl, & tcm_vhost_release_fabric_acl, & tcm_vhost_tpg_get_inst_index, 0, & tcm_vhost_release_cmd, 0, & tcm_vhost_shutdown_session, & tcm_vhost_close_session, & tcm_vhost_sess_get_index, 0, & tcm_vhost_write_pending, & tcm_vhost_write_pending_status, & tcm_vhost_set_default_node_attrs, & tcm_vhost_get_task_tag, & tcm_vhost_get_cmd_state, & tcm_vhost_queue_data_in, & tcm_vhost_queue_status, & tcm_vhost_queue_tm_rsp, & tcm_vhost_make_tport, & tcm_vhost_drop_tport, & tcm_vhost_make_tpg, & tcm_vhost_drop_tpg, & tcm_vhost_port_link, & tcm_vhost_port_unlink, 0, 0, & tcm_vhost_make_nodeacl, & tcm_vhost_drop_nodeacl}; [L12885] int LDV_IN_INTERRUPT ; [L13678] static int ldv_mutex_cred_guard_mutex ; [L13785] static int ldv_mutex_lock ; [L13892] static int ldv_mutex_mtx ; [L13999] static int ldv_mutex_mutex ; [L14106] static int ldv_mutex_tcm_vhost_mutex ; [L14213] static int ldv_mutex_tv_tpg_mutex ; [L12888] struct inode *var_group1 ; [L12889] struct file *var_group2 ; [L12890] unsigned int var_vhost_scsi_ioctl_44_p1 ; [L12891] unsigned long var_vhost_scsi_ioctl_44_p2 ; [L12892] unsigned int var_vhost_scsi_compat_ioctl_45_p1 ; [L12893] unsigned long var_vhost_scsi_compat_ioctl_45_p2 ; [L12894] int res_vhost_scsi_open_39 ; [L12895] struct se_portal_group *var_group3 ; [L12896] struct se_node_acl *var_group4 ; [L12897] struct t10_pr_registration *var_tcm_vhost_get_pr_transport_id_7_p2 ; [L12898] int *var_tcm_vhost_get_pr_transport_id_7_p3 ; [L12899] unsigned char *var_tcm_vhost_get_pr_transport_id_7_p4 ; [L12900] struct t10_pr_registration *var_tcm_vhost_get_pr_transport_id_len_8_p2 ; [L12901] int *var_tcm_vhost_get_pr_transport_id_len_8_p3 ; [L12902] char const *var_tcm_vhost_parse_pr_out_transport_id_9_p1 ; [L12903] u32 *var_tcm_vhost_parse_pr_out_transport_id_9_p2 ; [L12904] char **var_tcm_vhost_parse_pr_out_transport_id_9_p3 ; [L12905] struct se_cmd *var_group5 ; [L12906] struct se_session *var_group6 ; [L12907] struct target_fabric_configfs *var_group7 ; [L12908] struct config_group *var_group8 ; [L12909] char const *var_tcm_vhost_make_tport_59_p2 ; [L12910] struct se_wwn *var_group9 ; [L12911] char const *var_tcm_vhost_make_tpg_57_p2 ; [L12912] struct se_lun *var_group10 ; [L12913] char const *var_tcm_vhost_make_nodeacl_51_p2 ; [L12914] int ldv_s_vhost_scsi_fops_file_operations ; [L12915] int tmp ; [L12916] int tmp___0 ; [L12917] int tmp___1 ; [L12919] ldv_s_vhost_scsi_fops_file_operations = 0 [L12920] LDV_IN_INTERRUPT = 1 [L12921] CALL ldv_initialize() [L14323] ldv_mutex_cred_guard_mutex = 1 [L14324] ldv_mutex_lock = 1 [L14325] ldv_mutex_mtx = 1 [L14326] ldv_mutex_mutex = 1 [L14327] ldv_mutex_tcm_vhost_mutex = 1 [L14328] ldv_mutex_tv_tpg_mutex = 1 [L12921] RET ldv_initialize() [L12922] FCALL ldv_handler_precall() VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={0:0}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12923] CALL, EXPR tcm_vhost_init() [L12839] int ret ; [L12840] struct lock_class_key __key ; [L12841] char const *__lock_name ; [L12842] struct workqueue_struct *tmp ; [L12844] ret = -12 [L12845] __lock_name = "tcm_vhost" [L12846] tmp = __alloc_workqueue_key("tcm_vhost", 0U, 0, & __key, __lock_name) [L12847] tcm_vhost_workqueue = tmp VAL [__alloc_workqueue_key("tcm_vhost", 0U, 0, & __key, __lock_name)={365:-364}, __key={18446744073709547525:0}, __lock_name={354:0}, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=-12, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp={365:-364}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12848] COND FALSE !((unsigned long )tcm_vhost_workqueue == (unsigned long )((struct workqueue_struct *)0)) [L12852] CALL, EXPR vhost_scsi_register() [L12191] int tmp ; [L12193] CALL, EXPR misc_register(& vhost_scsi_misc) [L14561] return __VERIFIER_nondet_int(); [L12193] RET, EXPR misc_register(& vhost_scsi_misc) [L12193] tmp = misc_register(& vhost_scsi_misc) [L12194] return (tmp); [L12852] RET, EXPR vhost_scsi_register() [L12852] ret = vhost_scsi_register() [L12853] COND FALSE !(ret < 0) [L12857] CALL, EXPR tcm_vhost_register_configfs() [L12748] struct target_fabric_configfs *fabric ; [L12749] int ret ; [L12750] struct _ddebug descriptor ; [L12751] struct new_utsname *tmp ; [L12752] struct new_utsname *tmp___0 ; [L12753] long tmp___1 ; [L12754] long tmp___2 ; [L12755] long tmp___3 ; [L12756] struct _ddebug descriptor___0 ; [L12757] long tmp___4 ; [L12759] descriptor.modname = "tcm_vhost" [L12760] descriptor.function = "tcm_vhost_register_configfs" [L12761] descriptor.filename = "/work/vladimir/UFO/Work/test/work/current--X--drivers/vhost/tcm_vhost.ko--X--defaultlinux-3.7.3--X--32_7a--X--ufo/linux-3.7.3/csd_deg_dscv/12/dscv_tempdir/dscv/ri/32_7a/drivers/vhost/tcm_vhost.c.prepared" [L12762] descriptor.format = "TCM_VHOST fabric module %s on %s/%s on 3.7.3\n" [L12763] descriptor.lineno = 1561U [L12764] descriptor.flags = 0U [L12765] EXPR descriptor.flags VAL [__this_module={36893488147419103284:36893488147419103246}, descriptor={18446744073709547527:0}, descriptor.flags=0, descriptor___0={18446744073709547526:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12765] CALL, EXPR ldv__builtin_expect((long )descriptor.flags & 1L, 0L) VAL [\old(c)=0, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13675] return (exp); [L12765] RET, EXPR ldv__builtin_expect((long )descriptor.flags & 1L, 0L) VAL [__this_module={36893488147419103284:36893488147419103246}, descriptor={18446744073709547527:0}, descriptor.flags=0, descriptor___0={18446744073709547526:0}, ldv__builtin_expect((long )descriptor.flags & 1L, 0L)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12765] tmp___1 = ldv__builtin_expect((long )descriptor.flags & 1L, 0L) [L12766] COND FALSE !(tmp___1 != 0L) VAL [__this_module={36893488147419103284:36893488147419103246}, descriptor={18446744073709547527:0}, descriptor___0={18446744073709547526:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12773] CALL, EXPR target_fabric_configfs_init(& __this_module, "vhost") [L14636] CALL, EXPR ldv_malloc(sizeof(struct target_fabric_configfs)) VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L7220] COND FALSE !(__VERIFIER_nondet_int()) [L7225] return ((void *)0); [L14636] RET, EXPR ldv_malloc(sizeof(struct target_fabric_configfs)) VAL [__this_module={36893488147419103284:36893488147419103246}, arg0={36893488147419103284:36893488147419103246}, arg0={36893488147419103284:36893488147419103246}, arg1={341:0}, arg1={341:0}, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct target_fabric_configfs))={0:0}, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14636] return ldv_malloc(sizeof(struct target_fabric_configfs)); [L12773] RET, EXPR target_fabric_configfs_init(& __this_module, "vhost") [L12773] fabric = target_fabric_configfs_init(& __this_module, "vhost") [L12774] CALL, EXPR IS_ERR((void const *)fabric) VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L6795] long tmp ; VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L6797] CALL, EXPR ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L) VAL [\old(c)=0, \old(exp)=0, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13675] return (exp); [L6797] RET, EXPR ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L) VAL [__this_module={36893488147419103284:36893488147419103246}, ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ptr={0:0}, ptr={0:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L6797] tmp = ldv__builtin_expect((unsigned long )ptr > 0xfffffffffffff000UL, 0L) [L6798] return (tmp); [L12774] RET, EXPR IS_ERR((void const *)fabric) VAL [__this_module={36893488147419103284:36893488147419103246}, descriptor={18446744073709547527:0}, descriptor___0={18446744073709547526:0}, fabric={0:0}, IS_ERR((void const *)fabric)=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12774] tmp___3 = IS_ERR((void const *)fabric) [L12775] COND FALSE !(tmp___3 != 0L) [L12781] fabric->tf_ops = tcm_vhost_ops [L12782] fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = (struct configfs_attribute **)(& tcm_vhost_wwn_attrs) [L12783] fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = (struct configfs_attribute **)(& tcm_vhost_tpg_attrs) [L12784] fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = 0 [L12785] fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = 0 [L12786] fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = 0 [L12787] fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = 0 [L12788] fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = 0 [L12789] fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = 0 [L12790] fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = 0 [L12791] CALL, EXPR target_fabric_configfs_register(fabric) [L14640] return __VERIFIER_nondet_int(); [L12791] RET, EXPR target_fabric_configfs_register(fabric) [L12791] ret = target_fabric_configfs_register(fabric) [L12792] COND FALSE !(ret < 0) [L12797] tcm_vhost_fabric_configfs = fabric [L12798] descriptor___0.modname = "tcm_vhost" [L12799] descriptor___0.function = "tcm_vhost_register_configfs" [L12800] descriptor___0.filename = "/work/vladimir/UFO/Work/test/work/current--X--drivers/vhost/tcm_vhost.ko--X--defaultlinux-3.7.3--X--32_7a--X--ufo/linux-3.7.3/csd_deg_dscv/12/dscv_tempdir/dscv/ri/32_7a/drivers/vhost/tcm_vhost.c.prepared" [L12801] descriptor___0.format = "TCM_VHOST[0] - Set fabric -> tcm_vhost_fabric_configfs\n" [L12802] descriptor___0.lineno = 1599U [L12803] descriptor___0.flags = 0U [L12804] EXPR descriptor___0.flags VAL [__this_module={36893488147419103284:36893488147419103246}, descriptor={18446744073709547527:0}, descriptor___0={18446744073709547526:0}, descriptor___0.flags=0, fabric={0:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, tmp___3=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12804] CALL, EXPR ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L) VAL [\old(c)=0, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13675] return (exp); [L12804] RET, EXPR ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L) VAL [__this_module={36893488147419103284:36893488147419103246}, descriptor={18446744073709547527:0}, descriptor___0={18446744073709547526:0}, descriptor___0.flags=0, fabric={0:0}, ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L)=-2, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, tmp___3=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12804] tmp___4 = ldv__builtin_expect((long )descriptor___0.flags & 1L, 0L) [L12805] COND TRUE tmp___4 != 0L [L12809] return (0); [L12809] return (0); [L12809] return (0); VAL [\result=0, __dynamic_pr_debug(& descriptor___0, "TCM_VHOST[0] - Set fabric -> tcm_vhost_fabric_configfs\n")=36893488147419103234, __this_module={36893488147419103284:36893488147419103246}, fabric={0:0}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp___1=0, tmp___3=0, tmp___4=-2, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12857] RET, EXPR tcm_vhost_register_configfs() [L12857] ret = tcm_vhost_register_configfs() [L12858] COND FALSE !(ret < 0) [L12862] return (0); [L12862] return (0); VAL [\result=0, __alloc_workqueue_key("tcm_vhost", 0U, 0, & __key, __lock_name)={365:-364}, __lock_name={354:0}, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ret=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp={365:-364}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12923] RET, EXPR tcm_vhost_init() [L12923] tmp = tcm_vhost_init() [L12924] COND FALSE !(tmp != 0) VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13102] tmp___1 = __VERIFIER_nondet_int() [L13103] COND TRUE tmp___1 != 0 || ldv_s_vhost_scsi_fops_file_operations != 0 [L12930] tmp___0 = __VERIFIER_nondet_int() [L12932] case 0: [L12945] case 1: [L12953] case 2: VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, tmp___0=2, tmp___1=-3, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12954] FCALL ldv_handler_precall() VAL [__this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, ldv_s_vhost_scsi_fops_file_operations=0, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, tmp=0, tmp___0=2, tmp___1=-3, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12955] CALL vhost_scsi_ioctl(var_group2, var_vhost_scsi_ioctl_44_p1, var_vhost_scsi_ioctl_44_p2) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12095] struct vhost_scsi *vs ; [L12096] struct vhost_scsi_target backend ; [L12097] void *argp ; [L12098] u64 *featurep ; [L12099] u64 features ; [L12100] int r ; [L12101] int abi_version ; [L12102] unsigned long tmp ; [L12103] int tmp___0 ; [L12104] unsigned long tmp___1 ; [L12105] int tmp___2 ; [L12106] int tmp___3 ; [L12107] int tmp___4 ; [L12108] unsigned long tmp___5 ; [L12109] int tmp___6 ; [L12110] long tmp___7 ; [L12112] EXPR f->private_data [L12112] vs = (struct vhost_scsi *)f->private_data [L12113] argp = (void *)arg [L12114] featurep = (u64 *)argp [L12115] abi_version = 0 [L12117] case 1088991040U: [L12129] case 1088991041U: [L12141] case 1074048834U: [L12148] case 2148052736U: [L12156] case 1074310912U: [L12164] default: [L12165] CALL ldv_mutex_lock_44(& vs->dev.mutex) [L13467] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={36893488147419103236:392}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14037] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={36893488147419103236:392}, lock={36893488147419103236:392}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14041] ldv_mutex_mutex = 2 [L13467] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, ldv_func_arg1={36893488147419103236:392}, ldv_func_arg1={36893488147419103236:392}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13468] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, ldv_func_arg1={36893488147419103236:392}, ldv_func_arg1={36893488147419103236:392}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L12165] RET ldv_mutex_lock_44(& vs->dev.mutex) [L12166] CALL vhost_dev_ioctl(& vs->dev, ioctl, arg) [L8943] void *argp ; [L8944] struct file *eventfp ; [L8945] struct file *filep ; [L8946] struct eventfd_ctx *ctx ; [L8947] u64 p ; [L8948] long r ; [L8949] int i ; [L8950] int fd ; [L8951] unsigned long tmp ; [L8952] struct vhost_virtqueue *vq ; [L8953] void *base ; [L8954] int tmp___0 ; [L8955] int __ret_gu ; [L8956] unsigned long __val_gu ; [L8957] struct file *tmp___1 ; [L8958] long tmp___2 ; [L8959] struct eventfd_ctx *tmp___3 ; [L8961] argp = (void *)arg [L8962] filep = 0 [L8963] ctx = 0 VAL [\old(arg)=9223372036854775808, \old(ioctl)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, arg=9223372036854775808, argp={0:-9223372036854775808}, ctx={0:0}, d={36893488147419103236:376}, d={36893488147419103236:376}, filep={0:0}, ioctl=1, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, p={18446744073709547531:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8964] COND FALSE !(ioctl == 44801U) [L8969] CALL, EXPR vhost_dev_check_owner(d) [L8126] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, dev={36893488147419103236:376}, dev={36893488147419103236:376}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8128] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L6751] struct task_struct *pfo_ret__ ; [L6754] case 1UL: [L6757] case 2UL: [L6760] case 4UL: [L6763] case 8UL: [L6770] return (pfo_ret__); [L8128] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, dev={36893488147419103236:376}, dev={36893488147419103236:376}, get_current()={36893488147419103249:-5}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8128] tmp = get_current() [L8129] EXPR dev->mm [L8129] EXPR tmp->mm [L8129] EXPR (unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L [L8129] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L8969] RET, EXPR vhost_dev_check_owner(d) [L8969] r = vhost_dev_check_owner(d) [L8970] COND FALSE !(r != 0L) [L8975] case 1074310915U: [L8978] case 1074310916U: [L9009] case 1074048775U: [L9080] default: [L9081] CALL vhost_set_vring(d, (int )ioctl, argp) [L8658] struct file *eventfp ; [L8659] struct file *filep ; [L8660] bool pollstart ; [L8661] bool pollstop ; [L8662] struct eventfd_ctx *ctx ; [L8663] u32 *idxp ; [L8664] struct vhost_virtqueue *vq ; [L8665] struct vhost_vring_state s ; [L8666] struct vhost_vring_file f ; [L8667] struct vhost_vring_addr a ; [L8668] u32 idx ; [L8669] long r ; [L8670] int __ret_gu ; [L8671] unsigned long __val_gu ; [L8672] unsigned long tmp ; [L8673] unsigned long tmp___0 ; [L8674] int tmp___1 ; [L8675] unsigned long tmp___2 ; [L8676] int tmp___3 ; [L8677] int tmp___4 ; [L8678] unsigned long tmp___5 ; [L8679] struct file *tmp___6 ; [L8680] long tmp___7 ; [L8681] struct file *tmp___8 ; [L8682] unsigned long tmp___9 ; [L8683] struct file *tmp___10 ; [L8684] long tmp___11 ; [L8685] struct eventfd_ctx *tmp___12 ; [L8686] unsigned long tmp___13 ; [L8687] struct file *tmp___14 ; [L8688] long tmp___15 ; [L8689] struct eventfd_ctx *tmp___16 ; [L8691] filep = 0 [L8692] pollstart = 0 [L8693] pollstop = 0 [L8694] ctx = 0 [L8695] idxp = (u32 *)argp VAL [\old(ioctl)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, a={18446744073709547524:0}, argp={0:-9223372036854775808}, argp={0:-9223372036854775808}, ctx={0:0}, d={36893488147419103236:376}, d={36893488147419103236:376}, f={18446744073709547533:0}, filep={0:0}, idxp={0:-9223372036854775808}, ioctl=1, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, pollstart=0, pollstop=0, s={18446744073709547532:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8696] FCALL might_fault() VAL [\old(ioctl)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, a={18446744073709547524:0}, argp={0:-9223372036854775808}, argp={0:-9223372036854775808}, ctx={0:0}, d={36893488147419103236:376}, d={36893488147419103236:376}, f={18446744073709547533:0}, filep={0:0}, idxp={0:-9223372036854775808}, ioctl=1, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, pollstart=0, pollstop=0, s={18446744073709547532:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8698] case 1UL: [L8701] case 2UL: [L8704] case 4UL: [L8715] idx = (unsigned int )__val_gu [L8716] r = (long )__ret_gu VAL [\old(ioctl)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __ret_gu=366, __this_module={36893488147419103284:36893488147419103246}, __val_gu=369, a={18446744073709547524:0}, argp={0:-9223372036854775808}, argp={0:-9223372036854775808}, ctx={0:0}, d={36893488147419103236:376}, d={36893488147419103236:376}, f={18446744073709547533:0}, filep={0:0}, idx=369, idxp={0:-9223372036854775808}, ioctl=1, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, pollstart=0, pollstop=0, r=366, s={18446744073709547532:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8717] COND FALSE !(r < 0L) [L8721] EXPR d->nvqs VAL [\old(ioctl)=1, \old(ldv_mutex_mutex)=1, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __ret_gu=366, __this_module={36893488147419103284:36893488147419103246}, __val_gu=369, a={18446744073709547524:0}, argp={0:-9223372036854775808}, argp={0:-9223372036854775808}, ctx={0:0}, d={36893488147419103236:376}, d={36893488147419103236:376}, d->nvqs=4294967666, f={18446744073709547533:0}, filep={0:0}, idx=369, idxp={0:-9223372036854775808}, ioctl=1, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, pollstart=0, pollstop=0, r=366, s={18446744073709547532:0}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L8721] COND FALSE !((u32 )d->nvqs <= idx) [L8725] EXPR d->vqs [L8725] vq = d->vqs + (unsigned long )idx [L8726] CALL ldv_mutex_lock_14(& vq->mutex) [L13227] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={36893488147419103262:6317658}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14037] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, lock={36893488147419103262:6317658}, lock={36893488147419103262:6317658}, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L14039] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] [L13668] reach_error() VAL [\old(ldv_mutex_mutex)=2, \old(ldv_mutex_tcm_vhost_mutex)=1, \old(ldv_mutex_tv_tpg_mutex)=1, __this_module={36893488147419103284:36893488147419103246}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, ldv_mutex_tcm_vhost_mutex=1, ldv_mutex_tv_tpg_mutex=1, tcm_vhost_fabric_configfs={0:0}, tcm_vhost_list={357:0}, tcm_vhost_mutex={356:0}, tcm_vhost_ops={364:0}, tcm_vhost_tpg_attrs={361:0}, tcm_vhost_tpg_nexus={360:0}, tcm_vhost_workqueue={365:-364}, tcm_vhost_wwn_attrs={363:0}, tcm_vhost_wwn_version={362:0}, vhost_scsi_fops={358:0}, vhost_scsi_misc={359:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 115 procedures, 1963 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 153.5s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 119.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 36 mSolverCounterUnknown, 32927 SdHoareTripleChecker+Valid, 110.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32706 mSDsluCounter, 119405 SdHoareTripleChecker+Invalid, 105.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78208 mSDsCounter, 426 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14864 IncrementalHoareTripleChecker+Invalid, 15326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 426 mSolverCounterUnsat, 49076 mSDtfsCounter, 14864 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13643occurred in iteration=8, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.4s AutomataMinimizationTime, 18 MinimizatonAttempts, 6638 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 9.9s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 763 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 664 ConstructedInterpolants, 0 QuantifiedInterpolants, 1364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 36/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 02:54:02,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/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_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/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 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:54:05,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:54:05,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:54:05,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:54:05,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:54:05,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:54:05,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:54:05,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:54:05,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:54:05,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:54:05,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:54:05,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:54:05,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:54:05,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:54:05,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:54:05,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:54:05,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:54:05,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:54:05,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:54:05,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:54:05,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:54:05,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:54:05,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:54:05,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:54:05,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:54:05,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:54:05,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:54:05,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:54:05,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:54:05,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:54:05,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:54:05,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:54:05,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:54:05,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:54:05,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:54:05,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:54:05,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:54:05,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:54:05,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:54:05,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:54:05,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:54:05,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-23 02:54:05,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:54:05,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:54:05,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:54:05,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:54:05,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:54:05,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:54:05,351 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:54:05,351 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:54:05,352 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:54:05,352 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:54:05,353 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:54:05,353 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:54:05,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:54:05,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:54:05,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:54:05,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:54:05,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:54:05,356 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:54:05,356 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:54:05,356 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:54:05,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:54:05,357 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:54:05,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:54:05,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:54:05,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:54:05,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:54:05,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:54:05,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:54:05,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:54:05,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:54:05,359 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:54:05,359 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:54:05,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:54:05,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:54:05,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:54:05,360 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_28a8d324-1f87-4837-bc54-675d7d3ec2dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d776a54fbebbd358d59ab0126298feae1e40360b6fb5e6158cd54ba5ef877f7 [2021-11-23 02:54:05,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:54:05,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:54:05,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:54:05,759 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:54:05,760 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:54:05,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-23 02:54:05,850 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/data/caf20b635/982e5eb37dd640ed811d0e9ad310828a/FLAG1f6e955ad [2021-11-23 02:54:06,960 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:54:06,961 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-23 02:54:07,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/data/caf20b635/982e5eb37dd640ed811d0e9ad310828a/FLAG1f6e955ad [2021-11-23 02:54:07,189 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/data/caf20b635/982e5eb37dd640ed811d0e9ad310828a [2021-11-23 02:54:07,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:54:07,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:54:07,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:54:07,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:54:07,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:54:07,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:54:07" (1/1) ... [2021-11-23 02:54:07,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da0758e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:07, skipping insertion in model container [2021-11-23 02:54:07,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:54:07" (1/1) ... [2021-11-23 02:54:07,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:54:07,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:54:11,282 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_28a8d324-1f87-4837-bc54-675d7d3ec2dd/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-23 02:54:11,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:54:11,552 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 02:54:11,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:54:12,149 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_28a8d324-1f87-4837-bc54-675d7d3ec2dd/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-23 02:54:12,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:54:12,188 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:54:12,662 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_28a8d324-1f87-4837-bc54-675d7d3ec2dd/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i[462796,462809] [2021-11-23 02:54:12,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:54:12,846 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:54:12,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:12 WrapperNode [2021-11-23 02:54:12,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:54:12,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:54:12,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:54:12,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:54:12,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:12" (1/1) ... [2021-11-23 02:54:12,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:12" (1/1) ... [2021-11-23 02:54:13,235 INFO L137 Inliner]: procedures = 460, calls = 3477, calls flagged for inlining = 227, calls inlined = 194, statements flattened = 7521 [2021-11-23 02:54:13,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:54:13,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:54:13,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:54:13,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:54:13,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:12" (1/1) ... [2021-11-23 02:54:13,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:12" (1/1) ... [2021-11-23 02:54:13,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:12" (1/1) ... [2021-11-23 02:54:13,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:12" (1/1) ... [2021-11-23 02:54:13,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:12" (1/1) ... [2021-11-23 02:54:13,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:12" (1/1) ... [2021-11-23 02:54:13,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:12" (1/1) ... [2021-11-23 02:54:13,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:54:13,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:54:13,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:54:13,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:54:13,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:12" (1/1) ... [2021-11-23 02:54:13,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:54:13,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:54:13,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:54:13,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:54:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-23 02:54:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-23 02:54:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-23 02:54:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-23 02:54:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 02:54:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 02:54:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:54:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:54:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-23 02:54:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_fabric_acl [2021-11-23 02:54:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_fabric_acl [2021-11-23 02:54:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:54:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:54:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_access_ok [2021-11-23 02:54:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_access_ok [2021-11-23 02:54:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_close_session [2021-11-23 02:54:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_close_session [2021-11-23 02:54:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-23 02:54:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-23 02:54:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-23 02:54:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:54:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-23 02:54:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:54:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-23 02:54:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tcm_vhost_mutex [2021-11-23 02:54:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-23 02:54:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-23 02:54:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 02:54:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 02:54:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:54:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:54:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-23 02:54:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-23 02:54:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-23 02:54:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-23 02:54:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tpg [2021-11-23 02:54:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tpg [2021-11-23 02:54:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-23 02:54:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-23 02:54:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-23 02:54:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-23 02:54:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-23 02:54:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-23 02:54:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-23 02:54:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-23 02:54:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-11-23 02:54:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-11-23 02:54:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 02:54:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 02:54:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:54:13,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:54:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-23 02:54:13,981 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-23 02:54:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-23 02:54:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 02:54:13,982 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 02:54:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_complete_cmd [2021-11-23 02:54:13,982 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_complete_cmd [2021-11-23 02:54:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-23 02:54:13,982 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-23 02:54:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-23 02:54:13,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-23 02:54:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-23 02:54:13,983 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-23 02:54:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-23 02:54:13,983 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-23 02:54:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-23 02:54:13,984 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-23 02:54:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id [2021-11-23 02:54:13,984 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id [2021-11-23 02:54:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-23 02:54:13,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tv_tpg_mutex [2021-11-23 02:54:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:54:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:54:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:54:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:54:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-23 02:54:13,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-23 02:54:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-23 02:54:13,986 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-23 02:54:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:54:13,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:54:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-23 02:54:13,986 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-23 02:54:13,986 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-23 02:54:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-23 02:54:13,987 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-23 02:54:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-23 02:54:13,987 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-23 02:54:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:54:13,987 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:54:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-23 02:54:13,987 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-23 02:54:13,987 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user [2021-11-23 02:54:13,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user [2021-11-23 02:54:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-23 02:54:13,988 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-23 02:54:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-23 02:54:13,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-23 02:54:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-23 02:54:13,988 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-23 02:54:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-23 02:54:13,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-23 02:54:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_alloc_fabric_acl [2021-11-23 02:54:13,989 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_alloc_fabric_acl [2021-11-23 02:54:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-23 02:54:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-23 02:54:13,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tcm_vhost_mutex [2021-11-23 02:54:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_ioctl [2021-11-23 02:54:13,989 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_ioctl [2021-11-23 02:54:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-23 02:54:13,990 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-23 02:54:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:54:13,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:54:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_tport [2021-11-23 02:54:13,990 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_tport [2021-11-23 02:54:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-23 02:54:13,990 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-23 02:54:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 02:54:13,990 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 02:54:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 02:54:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-23 02:54:13,991 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-23 02:54:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-23 02:54:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:54:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:54:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-23 02:54:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-23 02:54:13,992 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-23 02:54:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:54:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-23 02:54:13,993 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-23 02:54:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:54:13,993 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:54:13,993 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-23 02:54:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-23 02:54:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-23 02:54:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-23 02:54:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-23 02:54:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-23 02:54:13,994 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:54:13,994 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:54:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:54:13,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:54:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:54:13,995 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:54:13,995 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-23 02:54:13,995 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-23 02:54:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-23 02:54:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-23 02:54:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-23 02:54:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-23 02:54:13,996 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-23 02:54:13,996 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-23 02:54:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:54:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:54:13,997 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:54:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-23 02:54:13,997 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-23 02:54:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:54:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-23 02:54:13,998 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-23 02:54:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_release_cmd [2021-11-23 02:54:13,998 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_release_cmd [2021-11-23 02:54:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_set_default_node_attrs [2021-11-23 02:54:13,998 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_set_default_node_attrs [2021-11-23 02:54:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nexus [2021-11-23 02:54:13,999 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nexus [2021-11-23 02:54:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-23 02:54:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 02:54:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-23 02:54:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 02:54:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:54:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-23 02:54:14,012 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-23 02:54:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-23 02:54:14,013 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-23 02:54:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-23 02:54:14,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_tv_tpg_mutex [2021-11-23 02:54:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-23 02:54:14,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-23 02:54:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:54:14,013 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:54:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_fabric_proto_ident [2021-11-23 02:54:14,014 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_fabric_proto_ident [2021-11-23 02:54:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-23 02:54:14,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-23 02:54:14,014 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2021-11-23 02:54:14,014 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2021-11-23 02:54:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2021-11-23 02:54:14,015 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2021-11-23 02:54:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_deregister [2021-11-23 02:54:14,015 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_deregister [2021-11-23 02:54:14,015 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:54:14,015 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:54:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-23 02:54:14,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-23 02:54:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_command_size [2021-11-23 02:54:14,016 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_command_size [2021-11-23 02:54:14,016 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_dump_proto_id [2021-11-23 02:54:14,016 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_dump_proto_id [2021-11-23 02:54:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-23 02:54:14,017 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-23 02:54:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:54:14,017 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:54:14,017 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-23 02:54:14,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-23 02:54:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-23 02:54:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-23 02:54:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_clear_endpoint [2021-11-23 02:54:14,018 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_clear_endpoint [2021-11-23 02:54:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-23 02:54:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-23 02:54:14,018 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-23 02:54:14,019 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-23 02:54:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-23 02:54:14,019 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-23 02:54:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:54:14,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:54:14,019 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_scsi_flush_vq [2021-11-23 02:54:14,020 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_scsi_flush_vq [2021-11-23 02:54:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-23 02:54:14,020 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-23 02:54:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-23 02:54:14,020 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-23 02:54:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-23 02:54:14,021 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-23 02:54:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure sas_parse_pr_out_transport_id [2021-11-23 02:54:14,021 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_parse_pr_out_transport_id [2021-11-23 02:54:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-23 02:54:14,021 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-23 02:54:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure utsname [2021-11-23 02:54:14,021 INFO L138 BoogieDeclarations]: Found implementation of procedure utsname [2021-11-23 02:54:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-23 02:54:14,022 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-23 02:54:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-23 02:54:14,022 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-23 02:54:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-23 02:54:14,022 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-23 02:54:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-23 02:54:14,023 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-23 02:54:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used [2021-11-23 02:54:14,023 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used [2021-11-23 02:54:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 02:54:14,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 02:54:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 02:54:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 02:54:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-23 02:54:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-23 02:54:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure tcm_vhost_drop_nodeacl [2021-11-23 02:54:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure tcm_vhost_drop_nodeacl [2021-11-23 02:54:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-23 02:54:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-23 02:54:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-23 02:54:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-23 02:54:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure sas_get_pr_transport_id_len [2021-11-23 02:54:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure sas_get_pr_transport_id_len [2021-11-23 02:54:15,016 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:54:15,020 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:54:57,501 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume #t~switch208;#res := ~ret~1; [2021-11-23 02:54:57,502 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7455: assume !#t~switch208;#t~switch208 := #t~switch208 || 4bv32 == ~size; [2021-11-23 02:54:57,502 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume 0bv64 != ~tmp___1~4;#res := ~ret~1; [2021-11-23 02:54:57,502 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7488: assume !(0bv64 != ~tmp___1~4);#res := ~ret~1; [2021-11-23 02:54:57,502 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7449: havoc #t~switch208; [2021-11-23 02:54:57,502 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474: SUMMARY for call #t~ret209 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != ~ret~1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-23 02:54:57,503 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume #t~switch208; [2021-11-23 02:54:57,503 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7470: assume !#t~switch208;#t~switch208 := #t~switch208 || 16bv32 == ~size; [2021-11-23 02:54:57,503 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7474-1: ~tmp___0~9 := #t~ret209;havoc #t~ret209; [2021-11-23 02:54:57,503 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch208;#res := ~ret~1; [2021-11-23 02:54:57,503 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497-1: ~tmp___2~3 := #t~ret211;havoc #t~ret211;#res := ~tmp___2~3[32:0]; [2021-11-23 02:54:57,504 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497: SUMMARY for call #t~ret211 := copy_user_generic(~dst.base, ~dst.offset, ~src.base, ~src.offset, ~size); srcloc: null [2021-11-23 02:54:57,504 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch208;#t~switch208 := #t~switch208 || 2bv32 == ~size; [2021-11-23 02:54:57,504 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume #t~switch208;#res := ~ret~1; [2021-11-23 02:54:57,504 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7460: assume !#t~switch208;#t~switch208 := #t~switch208 || 8bv32 == ~size; [2021-11-23 02:54:57,504 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487-1: ~tmp___1~4 := #t~ret210;havoc #t~ret210; [2021-11-23 02:54:57,505 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7487: SUMMARY for call #t~ret210 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != ~ret~1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-23 02:54:57,505 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume #t~switch208; [2021-11-23 02:54:57,505 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7483: assume !#t~switch208;#t~switch208 := true; [2021-11-23 02:54:57,505 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume 0bv64 != ~tmp___0~9;#res := ~ret~1; [2021-11-23 02:54:57,505 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7475: assume !(0bv64 != ~tmp___0~9);#res := ~ret~1; [2021-11-23 02:54:57,506 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume #t~switch208; [2021-11-23 02:54:57,506 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7496: assume !#t~switch208; [2021-11-23 02:54:57,506 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume #t~switch208;#res := ~ret~1; [2021-11-23 02:54:57,506 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L7465: assume !#t~switch208;#t~switch208 := #t~switch208 || 10bv32 == ~size; [2021-11-23 02:55:13,748 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:55:13,770 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:55:13,771 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:55:13,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:55:13 BoogieIcfgContainer [2021-11-23 02:55:13,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:55:13,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:55:13,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:55:13,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:55:13,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:54:07" (1/3) ... [2021-11-23 02:55:13,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3176d1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:55:13, skipping insertion in model container [2021-11-23 02:55:13,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:12" (2/3) ... [2021-11-23 02:55:13,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3176d1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:55:13, skipping insertion in model container [2021-11-23 02:55:13,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:55:13" (3/3) ... [2021-11-23 02:55:13,786 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers-vhost-tcm_vhost-ko--32_7a--linux-3.7.3.i [2021-11-23 02:55:13,792 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:55:13,792 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:55:13,851 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:55:13,858 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 02:55:13,859 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:55:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 2407 states, 1666 states have (on average 1.3475390156062426) internal successors, (2245), 1716 states have internal predecessors, (2245), 628 states have call successors, (628), 111 states have call predecessors, (628), 111 states have return successors, (628), 616 states have call predecessors, (628), 628 states have call successors, (628) [2021-11-23 02:55:13,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 02:55:13,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:13,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:55:13,933 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:55:13,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:13,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2087497073, now seen corresponding path program 1 times [2021-11-23 02:55:13,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:13,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604084519] [2021-11-23 02:55:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:13,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:13,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:13,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:13,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:55:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:15,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:55:15,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:15,410 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 02:55:15,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:15,554 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 02:55:15,555 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:15,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604084519] [2021-11-23 02:55:15,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604084519] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:15,556 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:15,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:55:15,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745441772] [2021-11-23 02:55:15,559 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:15,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:55:15,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:55:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:55:15,599 INFO L87 Difference]: Start difference. First operand has 2407 states, 1666 states have (on average 1.3475390156062426) internal successors, (2245), 1716 states have internal predecessors, (2245), 628 states have call successors, (628), 111 states have call predecessors, (628), 111 states have return successors, (628), 616 states have call predecessors, (628), 628 states have call successors, (628) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:55:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:16,061 INFO L93 Difference]: Finished difference Result 4788 states and 7060 transitions. [2021-11-23 02:55:16,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:55:16,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-11-23 02:55:16,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:16,101 INFO L225 Difference]: With dead ends: 4788 [2021-11-23 02:55:16,101 INFO L226 Difference]: Without dead ends: 2391 [2021-11-23 02:55:16,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 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 02:55:16,132 INFO L933 BasicCegarLoop]: 3483 mSDtfsCounter, 3472 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3472 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:16,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3472 Valid, 3483 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:55:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-11-23 02:55:16,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2391. [2021-11-23 02:55:16,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2391 states, 1653 states have (on average 1.3424077434966728) internal successors, (2219), 1700 states have internal predecessors, (2219), 627 states have call successors, (627), 111 states have call predecessors, (627), 110 states have return successors, (616), 604 states have call predecessors, (616), 616 states have call successors, (616) [2021-11-23 02:55:16,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 3462 transitions. [2021-11-23 02:55:16,446 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 3462 transitions. Word has length 15 [2021-11-23 02:55:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:16,448 INFO L470 AbstractCegarLoop]: Abstraction has 2391 states and 3462 transitions. [2021-11-23 02:55:16,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:55:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 3462 transitions. [2021-11-23 02:55:16,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:55:16,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:16,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:55:16,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:55:16,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:55:16,673 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:55:16,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:16,674 INFO L85 PathProgramCache]: Analyzing trace with hash 286775544, now seen corresponding path program 1 times [2021-11-23 02:55:16,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:16,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683777817] [2021-11-23 02:55:16,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:16,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:16,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:16,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:16,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:55:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:17,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:55:17,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:17,872 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 02:55:17,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:18,009 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 02:55:18,009 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:18,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683777817] [2021-11-23 02:55:18,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683777817] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:18,010 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:18,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:55:18,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250771029] [2021-11-23 02:55:18,011 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:18,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:55:18,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:18,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:55:18,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:55:18,013 INFO L87 Difference]: Start difference. First operand 2391 states and 3462 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:55:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:18,298 INFO L93 Difference]: Finished difference Result 2393 states and 3463 transitions. [2021-11-23 02:55:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:55:18,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-23 02:55:18,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:18,320 INFO L225 Difference]: With dead ends: 2393 [2021-11-23 02:55:18,320 INFO L226 Difference]: Without dead ends: 2390 [2021-11-23 02:55:18,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 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 02:55:18,324 INFO L933 BasicCegarLoop]: 3459 mSDtfsCounter, 3447 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 3459 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:18,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 3459 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:55:18,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-11-23 02:55:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2390. [2021-11-23 02:55:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 1653 states have (on average 1.3418027828191168) internal successors, (2218), 1699 states have internal predecessors, (2218), 626 states have call successors, (626), 111 states have call predecessors, (626), 110 states have return successors, (616), 604 states have call predecessors, (616), 616 states have call successors, (616) [2021-11-23 02:55:18,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 3460 transitions. [2021-11-23 02:55:18,501 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 3460 transitions. Word has length 16 [2021-11-23 02:55:18,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:18,501 INFO L470 AbstractCegarLoop]: Abstraction has 2390 states and 3460 transitions. [2021-11-23 02:55:18,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:55:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 3460 transitions. [2021-11-23 02:55:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:55:18,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:18,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:55:18,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:55:18,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:55:18,716 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:55:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash 298987860, now seen corresponding path program 1 times [2021-11-23 02:55:18,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:18,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783257330] [2021-11-23 02:55:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:18,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:18,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:18,721 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:18,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:55:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:19,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:55:19,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:20,045 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 02:55:20,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:20,193 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 02:55:20,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:20,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783257330] [2021-11-23 02:55:20,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783257330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:20,194 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:20,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:55:20,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695444753] [2021-11-23 02:55:20,195 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:20,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:55:20,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:20,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:55:20,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:55:20,196 INFO L87 Difference]: Start difference. First operand 2390 states and 3460 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:55:20,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:20,608 INFO L93 Difference]: Finished difference Result 2392 states and 3461 transitions. [2021-11-23 02:55:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:55:20,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-23 02:55:20,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:20,630 INFO L225 Difference]: With dead ends: 2392 [2021-11-23 02:55:20,630 INFO L226 Difference]: Without dead ends: 2389 [2021-11-23 02:55:20,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 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 02:55:20,635 INFO L933 BasicCegarLoop]: 3457 mSDtfsCounter, 3444 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3444 SdHoareTripleChecker+Valid, 3457 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:20,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3444 Valid, 3457 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:55:20,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-23 02:55:20,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2389. [2021-11-23 02:55:20,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 1653 states have (on average 1.3411978221415608) internal successors, (2217), 1698 states have internal predecessors, (2217), 625 states have call successors, (625), 111 states have call predecessors, (625), 110 states have return successors, (616), 604 states have call predecessors, (616), 616 states have call successors, (616) [2021-11-23 02:55:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3458 transitions. [2021-11-23 02:55:20,818 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3458 transitions. Word has length 17 [2021-11-23 02:55:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:20,818 INFO L470 AbstractCegarLoop]: Abstraction has 2389 states and 3458 transitions. [2021-11-23 02:55:20,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:55:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3458 transitions. [2021-11-23 02:55:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:55:20,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:20,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:55:20,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:55:21,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:55:21,036 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:55:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash 677574523, now seen corresponding path program 1 times [2021-11-23 02:55:21,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:21,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403724596] [2021-11-23 02:55:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:21,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:21,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:21,042 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:21,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:55:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:21,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:55:21,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:22,144 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 02:55:22,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:22,296 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 02:55:22,296 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:22,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403724596] [2021-11-23 02:55:22,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403724596] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:22,297 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:22,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:55:22,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055801383] [2021-11-23 02:55:22,297 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:22,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:55:22,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:22,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:55:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:55:22,299 INFO L87 Difference]: Start difference. First operand 2389 states and 3458 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:55:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:22,692 INFO L93 Difference]: Finished difference Result 5075 states and 7243 transitions. [2021-11-23 02:55:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:55:22,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-23 02:55:22,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:22,715 INFO L225 Difference]: With dead ends: 5075 [2021-11-23 02:55:22,716 INFO L226 Difference]: Without dead ends: 2730 [2021-11-23 02:55:22,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 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 02:55:22,728 INFO L933 BasicCegarLoop]: 3599 mSDtfsCounter, 1868 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 5549 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:22,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1868 Valid, 5549 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:55:22,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-23 02:55:22,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2727. [2021-11-23 02:55:22,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 1879 states have (on average 1.3166577967003725) internal successors, (2474), 1931 states have internal predecessors, (2474), 686 states have call successors, (686), 163 states have call predecessors, (686), 161 states have return successors, (677), 662 states have call predecessors, (677), 675 states have call successors, (677) [2021-11-23 02:55:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3837 transitions. [2021-11-23 02:55:22,936 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3837 transitions. Word has length 18 [2021-11-23 02:55:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:22,937 INFO L470 AbstractCegarLoop]: Abstraction has 2727 states and 3837 transitions. [2021-11-23 02:55:22,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:55:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3837 transitions. [2021-11-23 02:55:22,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:55:22,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:22,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:55:22,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:55:23,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:55:23,158 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:55:23,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:23,159 INFO L85 PathProgramCache]: Analyzing trace with hash -471135945, now seen corresponding path program 1 times [2021-11-23 02:55:23,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:23,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90907655] [2021-11-23 02:55:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:23,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:23,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:23,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:23,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:55:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:24,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:55:24,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:24,318 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 02:55:24,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:24,471 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 02:55:24,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:24,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90907655] [2021-11-23 02:55:24,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90907655] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:24,472 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:24,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:55:24,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132973773] [2021-11-23 02:55:24,473 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:24,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:55:24,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:24,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:55:24,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:55:24,474 INFO L87 Difference]: Start difference. First operand 2727 states and 3837 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:55:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:24,774 INFO L93 Difference]: Finished difference Result 2756 states and 3860 transitions. [2021-11-23 02:55:24,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:55:24,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-23 02:55:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:24,797 INFO L225 Difference]: With dead ends: 2756 [2021-11-23 02:55:24,797 INFO L226 Difference]: Without dead ends: 2752 [2021-11-23 02:55:24,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 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 02:55:24,800 INFO L933 BasicCegarLoop]: 3452 mSDtfsCounter, 3370 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3370 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:24,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3370 Valid, 3536 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:55:24,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2021-11-23 02:55:24,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2748. [2021-11-23 02:55:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 1896 states have (on average 1.3138185654008439) internal successors, (2491), 1946 states have internal predecessors, (2491), 684 states have call successors, (684), 169 states have call predecessors, (684), 167 states have return successors, (677), 662 states have call predecessors, (677), 675 states have call successors, (677) [2021-11-23 02:55:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3852 transitions. [2021-11-23 02:55:25,020 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3852 transitions. Word has length 19 [2021-11-23 02:55:25,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:25,021 INFO L470 AbstractCegarLoop]: Abstraction has 2748 states and 3852 transitions. [2021-11-23 02:55:25,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:55:25,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3852 transitions. [2021-11-23 02:55:25,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:55:25,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:25,027 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] [2021-11-23 02:55:25,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:55:25,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:55:25,245 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:55:25,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:25,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1721417218, now seen corresponding path program 1 times [2021-11-23 02:55:25,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:25,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496226632] [2021-11-23 02:55:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:25,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:25,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:25,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:25,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 02:55:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:26,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:55:26,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:26,439 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 02:55:26,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:26,590 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 02:55:26,590 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:26,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496226632] [2021-11-23 02:55:26,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496226632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:26,591 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:26,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:55:26,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933141692] [2021-11-23 02:55:26,592 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:26,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:55:26,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:26,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:55:26,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:55:26,593 INFO L87 Difference]: Start difference. First operand 2748 states and 3852 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:55:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:26,901 INFO L93 Difference]: Finished difference Result 2767 states and 3870 transitions. [2021-11-23 02:55:26,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:55:26,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-23 02:55:26,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:26,924 INFO L225 Difference]: With dead ends: 2767 [2021-11-23 02:55:26,924 INFO L226 Difference]: Without dead ends: 2743 [2021-11-23 02:55:26,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 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 02:55:26,930 INFO L933 BasicCegarLoop]: 3450 mSDtfsCounter, 3366 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:26,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3366 Valid, 3528 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:55:26,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2743 states. [2021-11-23 02:55:27,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2743 to 2741. [2021-11-23 02:55:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 1892 states have (on average 1.3128964059196617) internal successors, (2484), 1940 states have internal predecessors, (2484), 678 states have call successors, (678), 172 states have call predecessors, (678), 170 states have return successors, (673), 658 states have call predecessors, (673), 671 states have call successors, (673) [2021-11-23 02:55:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3835 transitions. [2021-11-23 02:55:27,197 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3835 transitions. Word has length 20 [2021-11-23 02:55:27,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:27,198 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 3835 transitions. [2021-11-23 02:55:27,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:55:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3835 transitions. [2021-11-23 02:55:27,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 02:55:27,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:27,207 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:55:27,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:55:27,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:55:27,424 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:55:27,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:27,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1767891636, now seen corresponding path program 1 times [2021-11-23 02:55:27,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:27,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036623065] [2021-11-23 02:55:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:27,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:27,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:27,428 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:27,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 02:55:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:28,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:55:28,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:55:28,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:55:29,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:29,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036623065] [2021-11-23 02:55:29,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036623065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:29,407 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:29,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 02:55:29,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322026684] [2021-11-23 02:55:29,407 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:29,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:55:29,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:29,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:55:29,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:55:29,409 INFO L87 Difference]: Start difference. First operand 2741 states and 3835 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:55:30,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:30,668 INFO L93 Difference]: Finished difference Result 5433 states and 7607 transitions. [2021-11-23 02:55:30,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:55:30,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2021-11-23 02:55:30,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:30,692 INFO L225 Difference]: With dead ends: 5433 [2021-11-23 02:55:30,692 INFO L226 Difference]: Without dead ends: 2730 [2021-11-23 02:55:30,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:55:30,707 INFO L933 BasicCegarLoop]: 3418 mSDtfsCounter, 10 mSDsluCounter, 13644 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17062 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:30,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 17062 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 02:55:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-23 02:55:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2730. [2021-11-23 02:55:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 1885 states have (on average 1.3124668435013263) internal successors, (2474), 1932 states have internal predecessors, (2474), 676 states have call successors, (676), 170 states have call predecessors, (676), 168 states have return successors, (671), 656 states have call predecessors, (671), 669 states have call successors, (671) [2021-11-23 02:55:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3821 transitions. [2021-11-23 02:55:31,040 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3821 transitions. Word has length 53 [2021-11-23 02:55:31,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:31,042 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3821 transitions. [2021-11-23 02:55:31,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:55:31,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3821 transitions. [2021-11-23 02:55:31,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 02:55:31,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:31,048 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:55:31,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:55:31,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:55:31,264 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:55:31,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash 815157862, now seen corresponding path program 1 times [2021-11-23 02:55:31,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:31,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172051282] [2021-11-23 02:55:31,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:31,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:31,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:31,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:31,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 02:55:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:32,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:55:32,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:55:32,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 02:55:33,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:33,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172051282] [2021-11-23 02:55:33,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172051282] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:33,202 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:33,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:55:33,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757183879] [2021-11-23 02:55:33,203 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:33,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:55:33,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:55:33,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:55:33,204 INFO L87 Difference]: Start difference. First operand 2730 states and 3821 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 02:55:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:55:34,137 INFO L93 Difference]: Finished difference Result 5421 states and 7592 transitions. [2021-11-23 02:55:34,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:55:34,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 81 [2021-11-23 02:55:34,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:55:34,162 INFO L225 Difference]: With dead ends: 5421 [2021-11-23 02:55:34,162 INFO L226 Difference]: Without dead ends: 2730 [2021-11-23 02:55:34,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:55:34,176 INFO L933 BasicCegarLoop]: 3405 mSDtfsCounter, 3 mSDsluCounter, 6800 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10205 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:55:34,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 10205 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 02:55:34,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-23 02:55:34,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2730. [2021-11-23 02:55:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 1885 states have (on average 1.3119363395225465) internal successors, (2473), 1932 states have internal predecessors, (2473), 676 states have call successors, (676), 170 states have call predecessors, (676), 168 states have return successors, (671), 656 states have call predecessors, (671), 669 states have call successors, (671) [2021-11-23 02:55:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3820 transitions. [2021-11-23 02:55:34,374 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3820 transitions. Word has length 81 [2021-11-23 02:55:34,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:55:34,375 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3820 transitions. [2021-11-23 02:55:34,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 02:55:34,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3820 transitions. [2021-11-23 02:55:34,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:55:34,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:55:34,381 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:55:34,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:55:34,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:55:34,604 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:55:34,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:55:34,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1123746407, now seen corresponding path program 1 times [2021-11-23 02:55:34,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:55:34,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431311513] [2021-11-23 02:55:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:55:34,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:55:34,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:55:34,610 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:55:34,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 02:55:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:55:35,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 02:55:35,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:55:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:55:37,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:55:42,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:55:42,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:55:42,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431311513] [2021-11-23 02:55:42,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431311513] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:55:42,157 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:55:42,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 20 [2021-11-23 02:55:42,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616774851] [2021-11-23 02:55:42,157 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:55:42,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 02:55:42,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:55:42,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 02:55:42,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-11-23 02:55:42,159 INFO L87 Difference]: Start difference. First operand 2730 states and 3820 transitions. Second operand has 20 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 6 states have call successors, (18), 2 states have call predecessors, (18), 8 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-23 02:55:47,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:55:49,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:56:07,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:07,370 INFO L93 Difference]: Finished difference Result 5769 states and 8139 transitions. [2021-11-23 02:56:07,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 02:56:07,371 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 6 states have call successors, (18), 2 states have call predecessors, (18), 8 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 87 [2021-11-23 02:56:07,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:07,398 INFO L225 Difference]: With dead ends: 5769 [2021-11-23 02:56:07,398 INFO L226 Difference]: Without dead ends: 3073 [2021-11-23 02:56:07,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-11-23 02:56:07,413 INFO L933 BasicCegarLoop]: 3726 mSDtfsCounter, 309 mSDsluCounter, 47799 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 51525 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:07,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 51525 Invalid, 2036 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2022 Invalid, 2 Unknown, 0 Unchecked, 23.6s Time] [2021-11-23 02:56:07,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2021-11-23 02:56:07,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2737. [2021-11-23 02:56:07,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 1890 states have (on average 1.3111111111111111) internal successors, (2478), 1937 states have internal predecessors, (2478), 677 states have call successors, (677), 170 states have call predecessors, (677), 169 states have return successors, (678), 658 states have call predecessors, (678), 670 states have call successors, (678) [2021-11-23 02:56:07,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 3833 transitions. [2021-11-23 02:56:07,666 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 3833 transitions. Word has length 87 [2021-11-23 02:56:07,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:07,667 INFO L470 AbstractCegarLoop]: Abstraction has 2737 states and 3833 transitions. [2021-11-23 02:56:07,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 5.1875) internal successors, (83), 15 states have internal predecessors, (83), 6 states have call successors, (18), 2 states have call predecessors, (18), 8 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-23 02:56:07,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 3833 transitions. [2021-11-23 02:56:07,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:56:07,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:07,671 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:56:07,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:07,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:07,884 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:56:07,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:07,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1429527131, now seen corresponding path program 1 times [2021-11-23 02:56:07,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:07,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972713029] [2021-11-23 02:56:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:07,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:07,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:07,888 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:07,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 02:56:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:09,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 1403 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-23 02:56:09,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:56:13,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:56:20,101 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:20,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972713029] [2021-11-23 02:56:20,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972713029] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:20,102 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:20,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 13] imperfect sequences [] total 31 [2021-11-23 02:56:20,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598071546] [2021-11-23 02:56:20,102 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:20,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-23 02:56:20,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:20,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-23 02:56:20,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2021-11-23 02:56:20,104 INFO L87 Difference]: Start difference. First operand 2737 states and 3833 transitions. Second operand has 31 states, 26 states have (on average 3.5) internal successors, (91), 24 states have internal predecessors, (91), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-23 02:56:29,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:56:51,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:51,146 INFO L93 Difference]: Finished difference Result 5432 states and 7615 transitions. [2021-11-23 02:56:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 02:56:51,147 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 3.5) internal successors, (91), 24 states have internal predecessors, (91), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) Word has length 87 [2021-11-23 02:56:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:51,170 INFO L225 Difference]: With dead ends: 5432 [2021-11-23 02:56:51,170 INFO L226 Difference]: Without dead ends: 2734 [2021-11-23 02:56:51,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 02:56:51,184 INFO L933 BasicCegarLoop]: 3278 mSDtfsCounter, 16 mSDsluCounter, 68654 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 71932 SdHoareTripleChecker+Invalid, 3114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:51,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 71932 Invalid, 3114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 2959 Invalid, 1 Unknown, 138 Unchecked, 26.3s Time] [2021-11-23 02:56:51,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-11-23 02:56:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2725. [2021-11-23 02:56:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 1882 states have (on average 1.311902231668438) internal successors, (2469), 1929 states have internal predecessors, (2469), 675 states have call successors, (675), 169 states have call predecessors, (675), 167 states have return successors, (670), 655 states have call predecessors, (670), 668 states have call successors, (670) [2021-11-23 02:56:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 3814 transitions. [2021-11-23 02:56:51,373 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 3814 transitions. Word has length 87 [2021-11-23 02:56:51,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:51,373 INFO L470 AbstractCegarLoop]: Abstraction has 2725 states and 3814 transitions. [2021-11-23 02:56:51,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 3.5) internal successors, (91), 24 states have internal predecessors, (91), 7 states have call successors, (18), 2 states have call predecessors, (18), 9 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-23 02:56:51,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 3814 transitions. [2021-11-23 02:56:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 02:56:51,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:51,383 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:56:51,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:51,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:51,597 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:56:51,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:51,597 INFO L85 PathProgramCache]: Analyzing trace with hash 239581160, now seen corresponding path program 1 times [2021-11-23 02:56:51,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:51,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808793897] [2021-11-23 02:56:51,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:51,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:51,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:51,600 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:51,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 02:56:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:53,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:56:53,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 02:56:53,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 02:56:53,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:53,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808793897] [2021-11-23 02:56:53,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808793897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:53,618 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:53,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:56:53,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148576079] [2021-11-23 02:56:53,619 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:53,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:56:53,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:53,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:56:53,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:56:53,620 INFO L87 Difference]: Start difference. First operand 2725 states and 3814 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 02:56:53,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:53,908 INFO L93 Difference]: Finished difference Result 3012 states and 4136 transitions. [2021-11-23 02:56:53,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:56:53,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2021-11-23 02:56:53,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:53,928 INFO L225 Difference]: With dead ends: 3012 [2021-11-23 02:56:53,928 INFO L226 Difference]: Without dead ends: 2518 [2021-11-23 02:56:53,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 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 02:56:53,933 INFO L933 BasicCegarLoop]: 3428 mSDtfsCounter, 1710 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 5149 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:53,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1710 Valid, 5149 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:56:53,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-23 02:56:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2021-11-23 02:56:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 1737 states have (on average 1.3005181347150259) internal successors, (2259), 1776 states have internal predecessors, (2259), 616 states have call successors, (616), 164 states have call predecessors, (616), 162 states have return successors, (609), 597 states have call predecessors, (609), 609 states have call successors, (609) [2021-11-23 02:56:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3484 transitions. [2021-11-23 02:56:54,115 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3484 transitions. Word has length 88 [2021-11-23 02:56:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:54,115 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3484 transitions. [2021-11-23 02:56:54,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 02:56:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3484 transitions. [2021-11-23 02:56:54,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 02:56:54,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:54,123 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:56:54,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:54,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:54,347 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:56:54,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1012007465, now seen corresponding path program 1 times [2021-11-23 02:56:54,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:54,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770424876] [2021-11-23 02:56:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:54,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:54,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:54,353 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:54,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 02:56:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:56:55,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:56:55,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:56:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 02:56:56,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:56:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 02:56:56,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:56:56,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770424876] [2021-11-23 02:56:56,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770424876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:56:56,303 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:56:56,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:56:56,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913170006] [2021-11-23 02:56:56,303 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:56:56,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:56:56,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:56:56,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:56:56,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:56:56,304 INFO L87 Difference]: Start difference. First operand 2516 states and 3484 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:56:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:56:56,475 INFO L93 Difference]: Finished difference Result 5021 states and 6977 transitions. [2021-11-23 02:56:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:56:56,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2021-11-23 02:56:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:56:56,488 INFO L225 Difference]: With dead ends: 5021 [2021-11-23 02:56:56,489 INFO L226 Difference]: Without dead ends: 2518 [2021-11-23 02:56:56,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 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 02:56:56,500 INFO L933 BasicCegarLoop]: 3155 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6303 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:56:56,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6303 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:56:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-23 02:56:56,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2516. [2021-11-23 02:56:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 1737 states have (on average 1.2970639032815199) internal successors, (2253), 1776 states have internal predecessors, (2253), 616 states have call successors, (616), 164 states have call predecessors, (616), 162 states have return successors, (609), 597 states have call predecessors, (609), 609 states have call successors, (609) [2021-11-23 02:56:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3478 transitions. [2021-11-23 02:56:56,672 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3478 transitions. Word has length 106 [2021-11-23 02:56:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:56:56,673 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3478 transitions. [2021-11-23 02:56:56,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:56:56,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3478 transitions. [2021-11-23 02:56:56,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 02:56:56,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:56:56,680 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:56:56,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 02:56:56,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:56:56,896 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:56:56,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:56:56,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1437319688, now seen corresponding path program 1 times [2021-11-23 02:56:56,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:56:56,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027666118] [2021-11-23 02:56:56,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:56:56,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:56:56,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:56:56,899 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:56:56,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28a8d324-1f87-4837-bc54-675d7d3ec2dd/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 02:58:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:58:03,802 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.