./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P --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 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:27:31,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:27:31,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:27:31,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:27:31,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:27:31,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:27:31,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:27:31,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:27:31,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:27:31,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:27:31,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:27:31,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:27:31,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:27:31,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:27:31,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:27:31,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:27:31,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:27:31,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:27:31,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:27:31,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:27:31,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:27:31,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:27:31,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:27:31,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:27:31,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:27:31,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:27:31,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:27:31,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:27:31,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:27:31,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:27:31,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:27:31,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:27:31,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:27:31,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:27:31,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:27:31,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:27:31,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:27:31,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:27:31,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:27:31,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:27:31,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:27:31,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:27:31,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:27:31,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:27:31,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:27:31,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:27:31,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:27:31,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:27:31,674 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:27:31,675 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:27:31,675 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:27:31,675 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:27:31,675 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:27:31,676 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:27:31,676 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:27:31,676 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:27:31,676 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:27:31,677 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:27:31,677 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:27:31,677 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:27:31,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:27:31,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:27:31,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:27:31,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:27:31,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:27:31,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:27:31,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:27:31,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:27:31,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:27:31,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:27:31,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:27:31,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:27:31,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:27:31,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:27:31,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:27:31,682 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:27:31,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:27:31,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:27:31,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:27:31,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:27:31,684 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_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 [2021-11-21 01:27:32,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:27:32,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:27:32,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:27:32,042 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:27:32,043 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:27:32,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2021-11-21 01:27:32,151 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/data/2d251e885/3aa5dba915cf4dfe9c7edd62888d0f0c/FLAGa7a144bb8 [2021-11-21 01:27:33,196 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:27:33,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2021-11-21 01:27:33,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/data/2d251e885/3aa5dba915cf4dfe9c7edd62888d0f0c/FLAGa7a144bb8 [2021-11-21 01:27:33,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/data/2d251e885/3aa5dba915cf4dfe9c7edd62888d0f0c [2021-11-21 01:27:33,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:27:33,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:27:33,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:27:33,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:27:33,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:27:33,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:27:33" (1/1) ... [2021-11-21 01:27:33,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632437b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:33, skipping insertion in model container [2021-11-21 01:27:33,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:27:33" (1/1) ... [2021-11-21 01:27:33,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:27:33,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:27:37,324 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_258f7a37-9739-4c84-9991-cfb2388889f5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2021-11-21 01:27:37,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:27:37,541 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:27:38,343 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_258f7a37-9739-4c84-9991-cfb2388889f5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2021-11-21 01:27:38,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:27:38,807 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:27:38,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:38 WrapperNode [2021-11-21 01:27:38,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:27:38,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:27:38,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:27:38,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:27:38,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:38" (1/1) ... [2021-11-21 01:27:39,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:38" (1/1) ... [2021-11-21 01:27:39,740 INFO L137 Inliner]: procedures = 367, calls = 5915, calls flagged for inlining = 162, calls inlined = 160, statements flattened = 12636 [2021-11-21 01:27:39,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:27:39,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:27:39,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:27:39,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:27:39,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:38" (1/1) ... [2021-11-21 01:27:39,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:38" (1/1) ... [2021-11-21 01:27:39,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:38" (1/1) ... [2021-11-21 01:27:39,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:38" (1/1) ... [2021-11-21 01:27:40,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:38" (1/1) ... [2021-11-21 01:27:40,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:38" (1/1) ... [2021-11-21 01:27:40,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:38" (1/1) ... [2021-11-21 01:27:40,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:27:40,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:27:40,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:27:40,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:27:40,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:38" (1/1) ... [2021-11-21 01:27:40,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:27:40,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:27:40,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:27:40,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:27:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 01:27:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 01:27:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-21 01:27:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-21 01:27:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure map_index_to_lba [2021-11-21 01:27:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure map_index_to_lba [2021-11-21 01:27:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure sector_size_show [2021-11-21 01:27:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure sector_size_show [2021-11-21 01:27:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:27:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:27:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:27:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:27:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure dif_show [2021-11-21 01:27:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_show [2021-11-21 01:27:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:27:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:27:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure stop_all_queued [2021-11-21 01:27:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_all_queued [2021-11-21 01:27:40,581 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_remove_adapter [2021-11-21 01:27:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_remove_adapter [2021-11-21 01:27:40,582 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_lbp [2021-11-21 01:27:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_lbp [2021-11-21 01:27:40,582 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_queuecommand_lock_or_not [2021-11-21 01:27:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_queuecommand_lock_or_not [2021-11-21 01:27:40,582 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-21 01:27:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-21 01:27:40,583 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_host_reset [2021-11-21 01:27:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_host_reset [2021-11-21 01:27:40,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-21 01:27:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-21 01:27:40,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:27:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:27:40,584 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2021-11-21 01:27:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2021-11-21 01:27:40,585 INFO L130 BoogieDeclarations]: Found specification of procedure dev_size_mb_show [2021-11-21 01:27:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_size_mb_show [2021-11-21 01:27:40,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-21 01:27:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-21 01:27:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure num_parts_show [2021-11-21 01:27:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure num_parts_show [2021-11-21 01:27:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_level_show [2021-11-21 01:27:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_level_show [2021-11-21 01:27:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2021-11-21 01:27:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2021-11-21 01:27:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2021-11-21 01:27:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2021-11-21 01:27:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure fill_from_dev_buffer [2021-11-21 01:27:40,588 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_from_dev_buffer [2021-11-21 01:27:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_destroy [2021-11-21 01:27:40,589 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_destroy [2021-11-21 01:27:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure map_region [2021-11-21 01:27:40,590 INFO L138 BoogieDeclarations]: Found implementation of procedure map_region [2021-11-21 01:27:40,590 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:27:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:27:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 01:27:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 01:27:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure fetch_to_dev_buffer [2021-11-21 01:27:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure fetch_to_dev_buffer [2021-11-21 01:27:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:27:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:27:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_set_guard [2021-11-21 01:27:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_set_guard [2021-11-21 01:27:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:27:40,593 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:27:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_info [2021-11-21 01:27:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_info [2021-11-21 01:27:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sglist [2021-11-21 01:27:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sglist [2021-11-21 01:27:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_abort [2021-11-21 01:27:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_abort [2021-11-21 01:27:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-21 01:27:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-21 01:27:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_resp [2021-11-21 01:27:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_resp [2021-11-21 01:27:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure pseudo_lld_bus_match [2021-11-21 01:27:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure pseudo_lld_bus_match [2021-11-21 01:27:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:27:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure host_lock_show [2021-11-21 01:27:40,597 INFO L138 BoogieDeclarations]: Found implementation of procedure host_lock_show [2021-11-21 01:27:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:27:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_bus_reset [2021-11-21 01:27:40,597 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_bus_reset [2021-11-21 01:27:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure no_lun_0_show [2021-11-21 01:27:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure no_lun_0_show [2021-11-21 01:27:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure dif_copy_prot [2021-11-21 01:27:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_copy_prot [2021-11-21 01:27:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:27:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be64 [2021-11-21 01:27:40,599 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be64 [2021-11-21 01:27:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure resp_err_recov_pg [2021-11-21 01:27:40,600 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_err_recov_pg [2021-11-21 01:27:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-21 01:27:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure map_show [2021-11-21 01:27:40,601 INFO L138 BoogieDeclarations]: Found implementation of procedure map_show [2021-11-21 01:27:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure no_uld_show [2021-11-21 01:27:40,602 INFO L138 BoogieDeclarations]: Found implementation of procedure no_uld_show [2021-11-21 01:27:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-21 01:27:40,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-21 01:27:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:27:40,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:27:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:27:40,603 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:27:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_build_sense_buffer [2021-11-21 01:27:40,603 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_build_sense_buffer [2021-11-21 01:27:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:27:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:27:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure removable_show [2021-11-21 01:27:40,604 INFO L138 BoogieDeclarations]: Found implementation of procedure removable_show [2021-11-21 01:27:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-21 01:27:40,604 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-21 01:27:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure num_tgts_show [2021-11-21 01:27:40,606 INFO L138 BoogieDeclarations]: Found implementation of procedure num_tgts_show [2021-11-21 01:27:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_device_create [2021-11-21 01:27:40,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_device_create [2021-11-21 01:27:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-21 01:27:40,609 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-21 01:27:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_pcd_m_spg [2021-11-21 01:27:40,611 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_pcd_m_spg [2021-11-21 01:27:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:27:40,612 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:27:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 01:27:40,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 01:27:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure find_last_bit [2021-11-21 01:27:40,620 INFO L138 BoogieDeclarations]: Found implementation of procedure find_last_bit [2021-11-21 01:27:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_ioctl [2021-11-21 01:27:40,620 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_ioctl [2021-11-21 01:27:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure max_queue_show [2021-11-21 01:27:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure max_queue_show [2021-11-21 01:27:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_next [2021-11-21 01:27:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_next [2021-11-21 01:27:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:27:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:27:40,622 INFO L130 BoogieDeclarations]: Found specification of procedure check_device_access_params [2021-11-21 01:27:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure check_device_access_params [2021-11-21 01:27:40,622 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_priv [2021-11-21 01:27:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_priv [2021-11-21 01:27:40,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:27:40,622 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_start [2021-11-21 01:27:40,623 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_start [2021-11-21 01:27:40,623 INFO L130 BoogieDeclarations]: Found specification of procedure strict_show [2021-11-21 01:27:40,623 INFO L138 BoogieDeclarations]: Found implementation of procedure strict_show [2021-11-21 01:27:40,623 INFO L130 BoogieDeclarations]: Found specification of procedure dif_verify [2021-11-21 01:27:40,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_verify [2021-11-21 01:27:40,623 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_sf_m_pg [2021-11-21 01:27:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_sf_m_pg [2021-11-21 01:27:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-11-21 01:27:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-11-21 01:27:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2021-11-21 01:27:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2021-11-21 01:27:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure resp_read_dt0 [2021-11-21 01:27:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_read_dt0 [2021-11-21 01:27:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:27:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure resp_disconnect_pg [2021-11-21 01:27:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_disconnect_pg [2021-11-21 01:27:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2021-11-21 01:27:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2021-11-21 01:27:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure dsense_show [2021-11-21 01:27:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure dsense_show [2021-11-21 01:27:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:27:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure resp_format_pg [2021-11-21 01:27:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_format_pg [2021-11-21 01:27:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2021-11-21 01:27:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2021-11-21 01:27:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure lba_to_map_index [2021-11-21 01:27:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure lba_to_map_index [2021-11-21 01:27:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_prot_sglist [2021-11-21 01:27:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_prot_sglist [2021-11-21 01:27:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-21 01:27:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-21 01:27:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure resp_write_same [2021-11-21 01:27:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_write_same [2021-11-21 01:27:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:27:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:27:40,629 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2021-11-21 01:27:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2021-11-21 01:27:40,629 INFO L130 BoogieDeclarations]: Found specification of procedure ndelay_show [2021-11-21 01:27:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ndelay_show [2021-11-21 01:27:40,629 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be64 [2021-11-21 01:27:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be64 [2021-11-21 01:27:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure resp_caching_pg [2021-11-21 01:27:40,630 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_caching_pg [2021-11-21 01:27:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:27:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:27:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_queuecommand [2021-11-21 01:27:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_queuecommand [2021-11-21 01:27:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-21 01:27:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-21 01:27:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-21 01:27:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-21 01:27:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_alloc [2021-11-21 01:27:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_alloc [2021-11-21 01:27:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure resp_iec_m_pg [2021-11-21 01:27:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_iec_m_pg [2021-11-21 01:27:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:27:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure resp_write_dt0 [2021-11-21 01:27:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_write_dt0 [2021-11-21 01:27:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_change_qdepth [2021-11-21 01:27:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_change_qdepth [2021-11-21 01:27:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_irqrestore [2021-11-21 01:27:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_irqrestore [2021-11-21 01:27:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:27:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:27:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_show_info [2021-11-21 01:27:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_show_info [2021-11-21 01:27:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure ptype_show [2021-11-21 01:27:40,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ptype_show [2021-11-21 01:27:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-21 01:27:40,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-21 01:27:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure root_device_unregister [2021-11-21 01:27:40,635 INFO L138 BoogieDeclarations]: Found implementation of procedure root_device_unregister [2021-11-21 01:27:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:27:40,636 INFO L130 BoogieDeclarations]: Found specification of procedure unmap_region [2021-11-21 01:27:40,636 INFO L138 BoogieDeclarations]: Found implementation of procedure unmap_region [2021-11-21 01:27:40,636 INFO L130 BoogieDeclarations]: Found specification of procedure fake_rw_show [2021-11-21 01:27:40,636 INFO L138 BoogieDeclarations]: Found implementation of procedure fake_rw_show [2021-11-21 01:27:40,636 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-11-21 01:27:40,636 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-11-21 01:27:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:27:40,637 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:27:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-21 01:27:40,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-21 01:27:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_invalid_fld [2021-11-21 01:27:40,637 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_invalid_fld [2021-11-21 01:27:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_count [2021-11-21 01:27:40,638 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_count [2021-11-21 01:27:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:27:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure max_luns_show [2021-11-21 01:27:40,638 INFO L138 BoogieDeclarations]: Found implementation of procedure max_luns_show [2021-11-21 01:27:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irqsave [2021-11-21 01:27:40,639 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irqsave [2021-11-21 01:27:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-21 01:27:40,639 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-21 01:27:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cancel [2021-11-21 01:27:40,639 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cancel [2021-11-21 01:27:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure opts_show [2021-11-21 01:27:40,639 INFO L138 BoogieDeclarations]: Found implementation of procedure opts_show [2021-11-21 01:27:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:27:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-11-21 01:27:40,641 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-11-21 01:27:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:27:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:27:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure devInfoReg [2021-11-21 01:27:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure devInfoReg [2021-11-21 01:27:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure guard_show [2021-11-21 01:27:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure guard_show [2021-11-21 01:27:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_device_reset [2021-11-21 01:27:40,646 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_device_reset [2021-11-21 01:27:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irqrestore [2021-11-21 01:27:40,647 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irqrestore [2021-11-21 01:27:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2021-11-21 01:27:40,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2021-11-21 01:27:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2021-11-21 01:27:40,648 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2021-11-21 01:27:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_max_tgts_luns [2021-11-21 01:27:40,648 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_max_tgts_luns [2021-11-21 01:27:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_configure [2021-11-21 01:27:40,648 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_configure [2021-11-21 01:27:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be32 [2021-11-21 01:27:40,648 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be32 [2021-11-21 01:27:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bidi_cmnd [2021-11-21 01:27:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bidi_cmnd [2021-11-21 01:27:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-21 01:27:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-21 01:27:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-21 01:27:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-21 01:27:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_stop [2021-11-21 01:27:40,650 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_stop [2021-11-21 01:27:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure do_device_access [2021-11-21 01:27:40,650 INFO L138 BoogieDeclarations]: Found implementation of procedure do_device_access [2021-11-21 01:27:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure virtual_gb_show [2021-11-21 01:27:40,650 INFO L138 BoogieDeclarations]: Found implementation of procedure virtual_gb_show [2021-11-21 01:27:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure vpd_use_hostno_show [2021-11-21 01:27:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure vpd_use_hostno_show [2021-11-21 01:27:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_target_reset [2021-11-21 01:27:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_target_reset [2021-11-21 01:27:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure dix_show [2021-11-21 01:27:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure dix_show [2021-11-21 01:27:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure every_nth_show [2021-11-21 01:27:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure every_nth_show [2021-11-21 01:27:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2021-11-21 01:27:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2021-11-21 01:27:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2021-11-21 01:27:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2021-11-21 01:27:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure clear_luns_changed_on_target [2021-11-21 01:27:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_luns_changed_on_target [2021-11-21 01:27:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_prot_sg_count [2021-11-21 01:27:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_prot_sg_count [2021-11-21 01:27:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure ato_show [2021-11-21 01:27:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ato_show [2021-11-21 01:27:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_buffer [2021-11-21 01:27:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_buffer [2021-11-21 01:27:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_sha_m_spg [2021-11-21 01:27:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_sha_m_spg [2021-11-21 01:27:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:27:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:27:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure add_host_show [2021-11-21 01:27:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure add_host_show [2021-11-21 01:27:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_add_adapter [2021-11-21 01:27:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_add_adapter [2021-11-21 01:27:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_copy_to_buffer [2021-11-21 01:27:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_copy_to_buffer [2021-11-21 01:27:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:27:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:27:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure dif_store [2021-11-21 01:27:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_store [2021-11-21 01:27:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:27:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:27:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_invalid_opcode [2021-11-21 01:27:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_invalid_opcode [2021-11-21 01:27:40,657 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:27:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:27:40,657 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_buffer [2021-11-21 01:27:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_buffer [2021-11-21 01:27:40,657 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_set_resid [2021-11-21 01:27:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_set_resid [2021-11-21 01:27:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2021-11-21 01:27:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2021-11-21 01:27:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:27:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure delay_show [2021-11-21 01:27:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure delay_show [2021-11-21 01:27:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-11-21 01:27:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-11-21 01:27:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure get_sdebug_capacity [2021-11-21 01:27:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure get_sdebug_capacity [2021-11-21 01:27:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:27:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:27:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure resp_ctrl_m_pg [2021-11-21 01:27:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_ctrl_m_pg [2021-11-21 01:27:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:27:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:27:41,929 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:27:41,939 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:27:43,241 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:28:33,220 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:28:36,594 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:28:36,594 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:28:36,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:36 BoogieIcfgContainer [2021-11-21 01:28:36,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:28:36,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:28:36,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:28:36,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:28:36,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:27:33" (1/3) ... [2021-11-21 01:28:36,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12999f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:28:36, skipping insertion in model container [2021-11-21 01:28:36,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:27:38" (2/3) ... [2021-11-21 01:28:36,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12999f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:28:36, skipping insertion in model container [2021-11-21 01:28:36,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:28:36" (3/3) ... [2021-11-21 01:28:36,614 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2021-11-21 01:28:36,621 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:28:36,621 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:28:36,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:28:36,739 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 [2021-11-21 01:28:36,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:28:36,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 2826 states, 1840 states have (on average 1.4260869565217391) internal successors, (2624), 1926 states have internal predecessors, (2624), 829 states have call successors, (829), 156 states have call predecessors, (829), 155 states have return successors, (798), 786 states have call predecessors, (798), 798 states have call successors, (798) [2021-11-21 01:28:36,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2021-11-21 01:28:36,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:28:36,938 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:28:36,938 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:28:36,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:28:36,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1003520922, now seen corresponding path program 1 times [2021-11-21 01:28:36,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:28:36,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127018515] [2021-11-21 01:28:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:28:36,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:28:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:28:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2021-11-21 01:28:39,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:28:39,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127018515] [2021-11-21 01:28:39,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127018515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:28:39,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:28:39,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:28:39,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908304601] [2021-11-21 01:28:39,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:28:39,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:28:39,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:28:39,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:28:39,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:28:39,596 INFO L87 Difference]: Start difference. First operand has 2826 states, 1840 states have (on average 1.4260869565217391) internal successors, (2624), 1926 states have internal predecessors, (2624), 829 states have call successors, (829), 156 states have call predecessors, (829), 155 states have return successors, (798), 786 states have call predecessors, (798), 798 states have call successors, (798) Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2021-11-21 01:28:41,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:45,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:47,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:49,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:53,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:28:56,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:28:59,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:01,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:05,485 INFO L93 Difference]: Finished difference Result 8078 states and 12235 transitions. [2021-11-21 01:29:05,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:29:05,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 907 [2021-11-21 01:29:05,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:05,595 INFO L225 Difference]: With dead ends: 8078 [2021-11-21 01:29:05,595 INFO L226 Difference]: Without dead ends: 5292 [2021-11-21 01:29:05,626 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 [2021-11-21 01:29:05,633 INFO L933 BasicCegarLoop]: 4561 mSDtfsCounter, 4099 mSDsluCounter, 3992 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4105 SdHoareTripleChecker+Valid, 8179 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:05,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4105 Valid, 8179 Invalid, 772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 763 Invalid, 7 Unknown, 0 Unchecked, 25.3s Time] [2021-11-21 01:29:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2021-11-21 01:29:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 5282. [2021-11-21 01:29:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 3509 states have (on average 1.4180678255913366) internal successors, (4976), 3616 states have internal predecessors, (4976), 1467 states have call successors, (1467), 306 states have call predecessors, (1467), 305 states have return successors, (1467), 1437 states have call predecessors, (1467), 1465 states have call successors, (1467) [2021-11-21 01:29:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 7910 transitions. [2021-11-21 01:29:06,140 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 7910 transitions. Word has length 907 [2021-11-21 01:29:06,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:06,148 INFO L470 AbstractCegarLoop]: Abstraction has 5282 states and 7910 transitions. [2021-11-21 01:29:06,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2021-11-21 01:29:06,151 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 7910 transitions. [2021-11-21 01:29:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2021-11-21 01:29:06,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:06,194 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:06,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:29:06,194 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:06,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:06,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2074089755, now seen corresponding path program 1 times [2021-11-21 01:29:06,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:06,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292390370] [2021-11-21 01:29:06,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:06,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2021-11-21 01:29:07,513 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:07,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292390370] [2021-11-21 01:29:07,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292390370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:07,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:29:07,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:29:07,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344013077] [2021-11-21 01:29:07,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:07,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:29:07,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:07,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:29:07,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:29:07,522 INFO L87 Difference]: Start difference. First operand 5282 states and 7910 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2021-11-21 01:29:09,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:13,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:15,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:17,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:21,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:25,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:26,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:32,081 INFO L93 Difference]: Finished difference Result 15407 states and 23079 transitions. [2021-11-21 01:29:32,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:29:32,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 914 [2021-11-21 01:29:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:32,192 INFO L225 Difference]: With dead ends: 15407 [2021-11-21 01:29:32,192 INFO L226 Difference]: Without dead ends: 10286 [2021-11-21 01:29:32,230 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 [2021-11-21 01:29:32,231 INFO L933 BasicCegarLoop]: 4442 mSDtfsCounter, 3736 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3742 SdHoareTripleChecker+Valid, 8186 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:32,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3742 Valid, 8186 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 766 Invalid, 6 Unknown, 0 Unchecked, 23.8s Time] [2021-11-21 01:29:32,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10286 states. [2021-11-21 01:29:32,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10286 to 10276. [2021-11-21 01:29:32,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10276 states, 6857 states have (on average 1.4240921685868455) internal successors, (9765), 7071 states have internal predecessors, (9765), 2813 states have call successors, (2813), 606 states have call predecessors, (2813), 605 states have return successors, (2819), 2752 states have call predecessors, (2819), 2811 states have call successors, (2819) [2021-11-21 01:29:32,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10276 states to 10276 states and 15397 transitions. [2021-11-21 01:29:32,863 INFO L78 Accepts]: Start accepts. Automaton has 10276 states and 15397 transitions. Word has length 914 [2021-11-21 01:29:32,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:32,866 INFO L470 AbstractCegarLoop]: Abstraction has 10276 states and 15397 transitions. [2021-11-21 01:29:32,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2021-11-21 01:29:32,867 INFO L276 IsEmpty]: Start isEmpty. Operand 10276 states and 15397 transitions. [2021-11-21 01:29:32,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2021-11-21 01:29:32,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:32,913 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:32,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:29:32,914 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:32,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1905963265, now seen corresponding path program 1 times [2021-11-21 01:29:32,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:32,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329307447] [2021-11-21 01:29:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:32,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:33,479 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:29:33,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330473201] [2021-11-21 01:29:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:33,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:33,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:33,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:33,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:29:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:36,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 13648 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:29:36,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2021-11-21 01:29:44,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:29:44,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:44,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329307447] [2021-11-21 01:29:44,604 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:29:44,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330473201] [2021-11-21 01:29:44,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330473201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:44,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:29:44,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:29:44,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210804633] [2021-11-21 01:29:44,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:44,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:29:44,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:44,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:29:44,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:29:44,613 INFO L87 Difference]: Start difference. First operand 10276 states and 15397 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2021-11-21 01:29:46,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:51,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:53,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:29:55,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:00,826 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:04,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:06,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:08,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:08,111 INFO L93 Difference]: Finished difference Result 19211 states and 28880 transitions. [2021-11-21 01:30:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:08,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 918 [2021-11-21 01:30:08,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:08,327 INFO L225 Difference]: With dead ends: 19211 [2021-11-21 01:30:08,327 INFO L226 Difference]: Without dead ends: 19207 [2021-11-21 01:30:08,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:08,351 INFO L933 BasicCegarLoop]: 4479 mSDtfsCounter, 3595 mSDsluCounter, 3658 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3599 SdHoareTripleChecker+Valid, 7801 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:08,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3599 Valid, 7801 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 739 Invalid, 7 Unknown, 0 Unchecked, 22.9s Time] [2021-11-21 01:30:08,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19207 states. [2021-11-21 01:30:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19207 to 19059. [2021-11-21 01:30:09,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19059 states, 12863 states have (on average 1.429604291378372) internal successors, (18389), 13234 states have internal predecessors, (18389), 5066 states have call successors, (5066), 1134 states have call predecessors, (5066), 1129 states have return successors, (5162), 4940 states have call predecessors, (5162), 5064 states have call successors, (5162) [2021-11-21 01:30:09,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19059 states to 19059 states and 28617 transitions. [2021-11-21 01:30:09,513 INFO L78 Accepts]: Start accepts. Automaton has 19059 states and 28617 transitions. Word has length 918 [2021-11-21 01:30:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:09,515 INFO L470 AbstractCegarLoop]: Abstraction has 19059 states and 28617 transitions. [2021-11-21 01:30:09,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2021-11-21 01:30:09,517 INFO L276 IsEmpty]: Start isEmpty. Operand 19059 states and 28617 transitions. [2021-11-21 01:30:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 938 [2021-11-21 01:30:09,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:09,535 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:09,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:09,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:09,748 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash -863961216, now seen corresponding path program 1 times [2021-11-21 01:30:09,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:09,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503627462] [2021-11-21 01:30:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:09,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2021-11-21 01:30:11,329 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:11,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503627462] [2021-11-21 01:30:11,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503627462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:11,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:11,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:30:11,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257283339] [2021-11-21 01:30:11,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:11,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:11,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:11,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:11,335 INFO L87 Difference]: Start difference. First operand 19059 states and 28617 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2021-11-21 01:30:13,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:18,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:20,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:23,041 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:27,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:29,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:31,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:33,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:34,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:34,370 INFO L93 Difference]: Finished difference Result 43439 states and 64944 transitions. [2021-11-21 01:30:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:34,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 937 [2021-11-21 01:30:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:34,522 INFO L225 Difference]: With dead ends: 43439 [2021-11-21 01:30:34,522 INFO L226 Difference]: Without dead ends: 24541 [2021-11-21 01:30:34,638 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 [2021-11-21 01:30:34,641 INFO L933 BasicCegarLoop]: 3935 mSDtfsCounter, 1169 mSDsluCounter, 4030 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 7593 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:34,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1169 Valid, 7593 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 845 Invalid, 7 Unknown, 0 Unchecked, 22.4s Time] [2021-11-21 01:30:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24541 states. [2021-11-21 01:30:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24541 to 24537. [2021-11-21 01:30:35,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24537 states, 16993 states have (on average 1.4460660271876655) internal successors, (24573), 17490 states have internal predecessors, (24573), 5940 states have call successors, (5940), 1612 states have call predecessors, (5940), 1603 states have return successors, (6042), 5774 states have call predecessors, (6042), 5938 states have call successors, (6042) [2021-11-21 01:30:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24537 states to 24537 states and 36555 transitions. [2021-11-21 01:30:36,037 INFO L78 Accepts]: Start accepts. Automaton has 24537 states and 36555 transitions. Word has length 937 [2021-11-21 01:30:36,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:36,039 INFO L470 AbstractCegarLoop]: Abstraction has 24537 states and 36555 transitions. [2021-11-21 01:30:36,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2021-11-21 01:30:36,040 INFO L276 IsEmpty]: Start isEmpty. Operand 24537 states and 36555 transitions. [2021-11-21 01:30:36,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2021-11-21 01:30:36,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:36,294 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 59, 59, 59, 59, 20, 20, 20, 20, 20, 20, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:36,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:30:36,295 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:36,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash -438169623, now seen corresponding path program 1 times [2021-11-21 01:30:36,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:36,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930940503] [2021-11-21 01:30:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:36,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 18459 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18452 trivial. 0 not checked. [2021-11-21 01:30:37,744 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:37,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930940503] [2021-11-21 01:30:37,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930940503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:37,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:37,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:30:37,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929732236] [2021-11-21 01:30:37,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:37,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:37,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:37,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:37,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:37,749 INFO L87 Difference]: Start difference. First operand 24537 states and 36555 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2021-11-21 01:30:39,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:45,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:47,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:50,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:30:53,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:30:57,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:02,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:04,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:05,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:05,589 INFO L93 Difference]: Finished difference Result 72555 states and 108112 transitions. [2021-11-21 01:31:05,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:31:05,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 983 [2021-11-21 01:31:05,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:05,913 INFO L225 Difference]: With dead ends: 72555 [2021-11-21 01:31:05,913 INFO L226 Difference]: Without dead ends: 48179 [2021-11-21 01:31:06,023 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 [2021-11-21 01:31:06,024 INFO L933 BasicCegarLoop]: 6285 mSDtfsCounter, 3754 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3760 SdHoareTripleChecker+Valid, 10025 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:06,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3760 Valid, 10025 Invalid, 1014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1005 Invalid, 8 Unknown, 0 Unchecked, 26.7s Time] [2021-11-21 01:31:06,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48179 states. [2021-11-21 01:31:08,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48179 to 48167. [2021-11-21 01:31:08,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48167 states, 33391 states have (on average 1.446946782067024) internal successors, (48315), 34342 states have internal predecessors, (48315), 11620 states have call successors, (11620), 3172 states have call predecessors, (11620), 3155 states have return successors, (11834), 11300 states have call predecessors, (11834), 11618 states have call successors, (11834) [2021-11-21 01:31:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48167 states to 48167 states and 71769 transitions. [2021-11-21 01:31:09,051 INFO L78 Accepts]: Start accepts. Automaton has 48167 states and 71769 transitions. Word has length 983 [2021-11-21 01:31:09,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:09,053 INFO L470 AbstractCegarLoop]: Abstraction has 48167 states and 71769 transitions. [2021-11-21 01:31:09,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2021-11-21 01:31:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 48167 states and 71769 transitions. [2021-11-21 01:31:09,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1230 [2021-11-21 01:31:09,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:09,123 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:09,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:31:09,124 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:31:09,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:09,125 INFO L85 PathProgramCache]: Analyzing trace with hash 389042547, now seen corresponding path program 1 times [2021-11-21 01:31:09,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:09,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301907958] [2021-11-21 01:31:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:09,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 30633 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30615 trivial. 0 not checked. [2021-11-21 01:31:10,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:10,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301907958] [2021-11-21 01:31:10,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301907958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:10,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:10,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:31:10,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145674376] [2021-11-21 01:31:10,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:10,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:31:10,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:10,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:31:10,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:31:10,873 INFO L87 Difference]: Start difference. First operand 48167 states and 71769 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2021-11-21 01:31:13,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:15,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:31:17,646 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:31:24,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:26,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:28,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:34,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:38,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:40,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:42,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:43,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:43,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:43,989 INFO L93 Difference]: Finished difference Result 96269 states and 143427 transitions. [2021-11-21 01:31:43,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:31:43,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 1229 [2021-11-21 01:31:43,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:44,232 INFO L225 Difference]: With dead ends: 96269 [2021-11-21 01:31:44,232 INFO L226 Difference]: Without dead ends: 48167 [2021-11-21 01:31:44,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:31:44,600 INFO L933 BasicCegarLoop]: 3751 mSDtfsCounter, 3 mSDsluCounter, 8242 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 7 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11242 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:44,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 11242 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1136 Invalid, 8 Unknown, 0 Unchecked, 31.6s Time] [2021-11-21 01:31:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48167 states. [2021-11-21 01:31:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48167 to 48167. [2021-11-21 01:31:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48167 states, 33391 states have (on average 1.4402383875894702) internal successors, (48091), 34342 states have internal predecessors, (48091), 11620 states have call successors, (11620), 3172 states have call predecessors, (11620), 3155 states have return successors, (11834), 11300 states have call predecessors, (11834), 11618 states have call successors, (11834) [2021-11-21 01:31:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48167 states to 48167 states and 71545 transitions. [2021-11-21 01:31:47,200 INFO L78 Accepts]: Start accepts. Automaton has 48167 states and 71545 transitions. Word has length 1229 [2021-11-21 01:31:47,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:47,202 INFO L470 AbstractCegarLoop]: Abstraction has 48167 states and 71545 transitions. [2021-11-21 01:31:47,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2021-11-21 01:31:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 48167 states and 71545 transitions. [2021-11-21 01:31:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1252 [2021-11-21 01:31:47,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:47,268 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:47,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:31:47,269 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:31:47,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash -311002815, now seen corresponding path program 1 times [2021-11-21 01:31:47,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:47,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505374176] [2021-11-21 01:31:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:47,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:48,011 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:31:48,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751722573] [2021-11-21 01:31:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:48,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:48,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:48,016 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:48,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:31:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:51,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 15570 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:31:51,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 29851 trivial. 0 not checked. [2021-11-21 01:31:53,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:31:53,626 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:53,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505374176] [2021-11-21 01:31:53,627 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:31:53,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751722573] [2021-11-21 01:31:53,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751722573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:53,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:53,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:31:53,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890002544] [2021-11-21 01:31:53,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:53,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:31:53,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:53,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:31:53,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:31:53,632 INFO L87 Difference]: Start difference. First operand 48167 states and 71545 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 3 states have call successors, (121), 3 states have call predecessors, (121), 3 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) [2021-11-21 01:31:55,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:58,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:32:03,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:05,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:08,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:13,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:16,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:18,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:32:19,800 INFO L93 Difference]: Finished difference Result 138396 states and 205665 transitions. [2021-11-21 01:32:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:32:19,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 3 states have call successors, (121), 3 states have call predecessors, (121), 3 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) Word has length 1251 [2021-11-21 01:32:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:32:20,205 INFO L225 Difference]: With dead ends: 138396 [2021-11-21 01:32:20,205 INFO L226 Difference]: Without dead ends: 90390 [2021-11-21 01:32:20,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:32:20,660 INFO L933 BasicCegarLoop]: 4498 mSDtfsCounter, 3682 mSDsluCounter, 3981 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 46 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3688 SdHoareTripleChecker+Valid, 8110 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:32:20,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3688 Valid, 8110 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 873 Invalid, 8 Unknown, 0 Unchecked, 24.0s Time] [2021-11-21 01:32:20,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90390 states. [2021-11-21 01:32:23,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90390 to 90370. [2021-11-21 01:32:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90370 states, 62426 states have (on average 1.4367411014641336) internal successors, (89690), 64226 states have internal predecessors, (89690), 22020 states have call successors, (22020), 5948 states have call predecessors, (22020), 5923 states have return successors, (22406), 21415 states have call predecessors, (22406), 22018 states have call successors, (22406) [2021-11-21 01:32:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90370 states to 90370 states and 134116 transitions. [2021-11-21 01:32:24,345 INFO L78 Accepts]: Start accepts. Automaton has 90370 states and 134116 transitions. Word has length 1251 [2021-11-21 01:32:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:32:24,346 INFO L470 AbstractCegarLoop]: Abstraction has 90370 states and 134116 transitions. [2021-11-21 01:32:24,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 3 states have call successors, (121), 3 states have call predecessors, (121), 3 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) [2021-11-21 01:32:24,347 INFO L276 IsEmpty]: Start isEmpty. Operand 90370 states and 134116 transitions. [2021-11-21 01:32:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1251 [2021-11-21 01:32:24,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:32:24,425 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:32:24,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:32:24,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:32:24,640 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:32:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:32:24,641 INFO L85 PathProgramCache]: Analyzing trace with hash 66882066, now seen corresponding path program 1 times [2021-11-21 01:32:24,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:32:24,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921569209] [2021-11-21 01:32:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:24,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:32:25,273 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:32:25,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800390119] [2021-11-21 01:32:25,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:25,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:32:25,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:32:25,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:32:25,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:32:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:28,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 15569 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:32:28,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:32:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 11050 proven. 0 refuted. 0 times theorem prover too weak. 19595 trivial. 0 not checked. [2021-11-21 01:32:32,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:32:32,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:32:32,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921569209] [2021-11-21 01:32:32,074 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:32:32,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800390119] [2021-11-21 01:32:32,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800390119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:32:32,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:32:32,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:32:32,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957361070] [2021-11-21 01:32:32,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:32:32,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:32:32,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:32:32,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:32:32,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:32:32,079 INFO L87 Difference]: Start difference. First operand 90370 states and 134116 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2021-11-21 01:32:34,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:38,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:32:43,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:46,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:48,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:49,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:51,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:52,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:32:55,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:01,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:04,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:06,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:07,817 INFO L93 Difference]: Finished difference Result 180675 states and 268121 transitions. [2021-11-21 01:33:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:33:07,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 1250 [2021-11-21 01:33:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:08,428 INFO L225 Difference]: With dead ends: 180675 [2021-11-21 01:33:08,428 INFO L226 Difference]: Without dead ends: 90370 [2021-11-21 01:33:08,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1247 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:33:08,648 INFO L933 BasicCegarLoop]: 3744 mSDtfsCounter, 3 mSDsluCounter, 8233 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11228 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:08,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 11228 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1132 Invalid, 9 Unknown, 0 Unchecked, 32.9s Time] [2021-11-21 01:33:08,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90370 states. [2021-11-21 01:33:11,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90370 to 90370. [2021-11-21 01:33:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90370 states, 62426 states have (on average 1.4362284945375325) internal successors, (89658), 64226 states have internal predecessors, (89658), 22020 states have call successors, (22020), 5948 states have call predecessors, (22020), 5923 states have return successors, (22406), 21415 states have call predecessors, (22406), 22018 states have call successors, (22406) [2021-11-21 01:33:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90370 states to 90370 states and 134084 transitions. [2021-11-21 01:33:11,883 INFO L78 Accepts]: Start accepts. Automaton has 90370 states and 134084 transitions. Word has length 1250 [2021-11-21 01:33:11,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:11,884 INFO L470 AbstractCegarLoop]: Abstraction has 90370 states and 134084 transitions. [2021-11-21 01:33:11,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2021-11-21 01:33:11,884 INFO L276 IsEmpty]: Start isEmpty. Operand 90370 states and 134084 transitions. [2021-11-21 01:33:11,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1258 [2021-11-21 01:33:11,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:11,944 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:12,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:33:12,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:33:12,172 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:12,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:12,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1669936096, now seen corresponding path program 1 times [2021-11-21 01:33:12,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:12,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972274595] [2021-11-21 01:33:12,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:12,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:12,896 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:33:12,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234115722] [2021-11-21 01:33:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:12,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:33:12,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:33:12,898 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:33:12,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:33:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:15,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 15588 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:33:16,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:33:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 11038 proven. 0 refuted. 0 times theorem prover too weak. 19607 trivial. 0 not checked. [2021-11-21 01:33:24,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:33:24,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:24,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972274595] [2021-11-21 01:33:24,934 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:33:24,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234115722] [2021-11-21 01:33:24,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234115722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:24,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:24,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:33:24,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261619649] [2021-11-21 01:33:24,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:24,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:33:24,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:24,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:33:24,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:24,939 INFO L87 Difference]: Start difference. First operand 90370 states and 134084 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-21 01:33:27,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:34,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:36,424 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:39,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:45,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:49,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:50,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:52,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:54,525 INFO L93 Difference]: Finished difference Result 268515 states and 398742 transitions. [2021-11-21 01:33:54,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:33:54,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 1257 [2021-11-21 01:33:54,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:55,641 INFO L225 Difference]: With dead ends: 268515 [2021-11-21 01:33:55,641 INFO L226 Difference]: Without dead ends: 178306 [2021-11-21 01:33:55,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1255 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:55,973 INFO L933 BasicCegarLoop]: 4468 mSDtfsCounter, 3787 mSDsluCounter, 3855 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3793 SdHoareTripleChecker+Valid, 7954 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:55,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3793 Valid, 7954 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 760 Invalid, 7 Unknown, 0 Unchecked, 24.8s Time] [2021-11-21 01:33:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178306 states. [2021-11-21 01:34:01,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178306 to 178254. [2021-11-21 01:34:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178254 states, 123366 states have (on average 1.4372841787850785) internal successors, (177312), 126790 states have internal predecessors, (177312), 43204 states have call successors, (43204), 11732 states have call predecessors, (43204), 11683 states have return successors, (43970), 42071 states have call predecessors, (43970), 43202 states have call successors, (43970) [2021-11-21 01:34:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178254 states to 178254 states and 264486 transitions. [2021-11-21 01:34:03,676 INFO L78 Accepts]: Start accepts. Automaton has 178254 states and 264486 transitions. Word has length 1257 [2021-11-21 01:34:03,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:03,678 INFO L470 AbstractCegarLoop]: Abstraction has 178254 states and 264486 transitions. [2021-11-21 01:34:03,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2021-11-21 01:34:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 178254 states and 264486 transitions. [2021-11-21 01:34:03,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1275 [2021-11-21 01:34:03,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:03,790 INFO L514 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 21, 21, 20, 20, 20, 20, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:03,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:34:04,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:34:04,004 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:04,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:04,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1307228340, now seen corresponding path program 1 times [2021-11-21 01:34:04,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:04,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447747264] [2021-11-21 01:34:04,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:04,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:04,522 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:34:04,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630020515] [2021-11-21 01:34:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:04,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:34:04,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:34:04,524 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:34:04,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_258f7a37-9739-4c84-9991-cfb2388889f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:34:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:07,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 15666 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:34:07,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:34:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30724 backedges. 11057 proven. 0 refuted. 0 times theorem prover too weak. 19667 trivial. 0 not checked. [2021-11-21 01:34:16,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:34:16,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:16,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447747264] [2021-11-21 01:34:16,749 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:34:16,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630020515] [2021-11-21 01:34:16,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630020515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:16,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:16,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:34:16,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514238743] [2021-11-21 01:34:16,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:16,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:34:16,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:16,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:34:16,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:16,754 INFO L87 Difference]: Start difference. First operand 178254 states and 264486 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2021-11-21 01:34:18,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:24,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:28,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:30,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:32,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:36,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:40,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:42,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:43,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:43,718 INFO L93 Difference]: Finished difference Result 358521 states and 530615 transitions. [2021-11-21 01:34:43,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:34:43,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 2 states have call successors, (125), 2 states have call predecessors, (125), 2 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) Word has length 1274 [2021-11-21 01:34:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:44,519 INFO L225 Difference]: With dead ends: 358521 [2021-11-21 01:34:44,519 INFO L226 Difference]: Without dead ends: 180428 [2021-11-21 01:34:45,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1273 GetRequests, 1272 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:45,428 INFO L933 BasicCegarLoop]: 3681 mSDtfsCounter, 3551 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3559 SdHoareTripleChecker+Valid, 3941 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:45,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3559 Valid, 3941 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 422 Invalid, 6 Unknown, 0 Unchecked, 21.0s Time] [2021-11-21 01:34:45,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180428 states.