./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 11d3d0800a0e0d53b4d0190c9a443eccbd843952940cf36579a7110b5d32d86b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:47:40,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:47:40,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:47:40,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:47:40,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:47:40,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:47:40,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:47:40,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:47:40,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:47:40,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:47:40,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:47:40,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:47:40,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:47:40,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:47:40,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:47:40,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:47:40,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:47:40,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:47:40,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:47:40,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:47:40,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:47:40,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:47:40,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:47:40,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:47:40,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:47:40,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:47:40,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:47:40,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:47:40,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:47:40,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:47:40,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:47:40,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:47:40,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:47:40,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:47:40,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:47:40,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:47:40,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:47:40,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:47:40,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:47:40,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:47:40,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:47:40,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:47:40,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:47:40,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:47:40,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:47:40,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:47:40,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:47:40,743 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:47:40,743 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:47:40,744 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:47:40,744 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:47:40,744 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:47:40,744 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:47:40,749 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:47:40,750 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:47:40,750 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:47:40,750 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:47:40,750 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:47:40,750 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:47:40,751 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:47:40,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:47:40,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:47:40,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:47:40,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:47:40,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:47:40,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:47:40,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:47:40,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:47:40,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:47:40,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:47:40,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:47:40,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:47:40,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:47:40,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:47:40,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:47:40,769 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:47:40,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:47:40,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:47:40,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:47:40,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:47:40,771 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_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11d3d0800a0e0d53b4d0190c9a443eccbd843952940cf36579a7110b5d32d86b [2021-11-23 02:47:41,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:47:41,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:47:41,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:47:41,119 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:47:41,120 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:47:41,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-23 02:47:41,198 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/data/d325270bf/07888aaf0bb242aa9d58e320b3761cb4/FLAG047dc6bbb [2021-11-23 02:47:42,405 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:47:42,406 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-23 02:47:42,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/data/d325270bf/07888aaf0bb242aa9d58e320b3761cb4/FLAG047dc6bbb [2021-11-23 02:47:42,579 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/data/d325270bf/07888aaf0bb242aa9d58e320b3761cb4 [2021-11-23 02:47:42,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:47:42,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:47:42,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:47:42,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:47:42,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:47:42,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:47:42" (1/1) ... [2021-11-23 02:47:42,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530686cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:42, skipping insertion in model container [2021-11-23 02:47:42,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:47:42" (1/1) ... [2021-11-23 02:47:42,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:47:42,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:47:46,111 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_3755069f-48c5-429f-a232-75d6225e0bae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[323389,323402] [2021-11-23 02:47:46,117 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_3755069f-48c5-429f-a232-75d6225e0bae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[323534,323547] [2021-11-23 02:47:46,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:47:46,207 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:47:46,695 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_3755069f-48c5-429f-a232-75d6225e0bae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[323389,323402] [2021-11-23 02:47:46,696 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_3755069f-48c5-429f-a232-75d6225e0bae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[323534,323547] [2021-11-23 02:47:46,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:47:46,904 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:47:46,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:46 WrapperNode [2021-11-23 02:47:46,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:47:46,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:47:46,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:47:46,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:47:46,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:46" (1/1) ... [2021-11-23 02:47:47,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:46" (1/1) ... [2021-11-23 02:47:47,270 INFO L137 Inliner]: procedures = 379, calls = 2098, calls flagged for inlining = 146, calls inlined = 127, statements flattened = 4154 [2021-11-23 02:47:47,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:47:47,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:47:47,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:47:47,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:47:47,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:46" (1/1) ... [2021-11-23 02:47:47,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:46" (1/1) ... [2021-11-23 02:47:47,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:46" (1/1) ... [2021-11-23 02:47:47,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:46" (1/1) ... [2021-11-23 02:47:47,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:46" (1/1) ... [2021-11-23 02:47:47,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:46" (1/1) ... [2021-11-23 02:47:47,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:46" (1/1) ... [2021-11-23 02:47:47,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:47:47,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:47:47,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:47:47,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:47:47,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:46" (1/1) ... [2021-11-23 02:47:47,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:47:47,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:47:47,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:47:47,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:47:47,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2021-11-23 02:47:47,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2021-11-23 02:47:47,707 INFO L130 BoogieDeclarations]: Found specification of procedure ResetChip [2021-11-23 02:47:47,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ResetChip [2021-11-23 02:47:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:47:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:47:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:47:47,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:47:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:47:47,709 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:47:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure RxCurCount [2021-11-23 02:47:47,709 INFO L138 BoogieDeclarations]: Found implementation of procedure RxCurCount [2021-11-23 02:47:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_txqueue_empty [2021-11-23 02:47:47,709 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_device_txqueue_empty [2021-11-23 02:47:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2021-11-23 02:47:47,709 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_setup_dma [2021-11-23 02:47:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:47:47,710 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:47:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:47:47,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:47:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-23 02:47:47,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-23 02:47:47,711 INFO L130 BoogieDeclarations]: Found specification of procedure Sdelay [2021-11-23 02:47:47,711 INFO L138 BoogieDeclarations]: Found implementation of procedure Sdelay [2021-11-23 02:47:47,711 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:47:47,711 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:47:47,711 INFO L130 BoogieDeclarations]: Found specification of procedure CheckRegBit [2021-11-23 02:47:47,711 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckRegBit [2021-11-23 02:47:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure via_remove_one [2021-11-23 02:47:47,712 INFO L138 BoogieDeclarations]: Found implementation of procedure via_remove_one [2021-11-23 02:47:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure SetSIR [2021-11-23 02:47:47,713 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSIR [2021-11-23 02:47:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_speed [2021-11-23 02:47:47,713 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_speed [2021-11-23 02:47:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 02:47:47,713 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 02:47:47,714 INFO L130 BoogieDeclarations]: Found specification of procedure SetMaxRxPacketSize [2021-11-23 02:47:47,714 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMaxRxPacketSize [2021-11-23 02:47:47,714 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-23 02:47:47,714 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-23 02:47:47,715 INFO L130 BoogieDeclarations]: Found specification of procedure GetRecvByte [2021-11-23 02:47:47,715 INFO L138 BoogieDeclarations]: Found implementation of procedure GetRecvByte [2021-11-23 02:47:47,715 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 02:47:47,715 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 02:47:47,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:47:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:47:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:47:47,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:47:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure SetPulseWidth [2021-11-23 02:47:47,718 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPulseWidth [2021-11-23 02:47:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure Tdelay [2021-11-23 02:47:47,720 INFO L138 BoogieDeclarations]: Found implementation of procedure Tdelay [2021-11-23 02:47:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-23 02:47:47,720 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-23 02:47:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:47:47,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:47:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure hwreset [2021-11-23 02:47:47,721 INFO L138 BoogieDeclarations]: Found implementation of procedure hwreset [2021-11-23 02:47:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:47:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:47:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure ClkTx [2021-11-23 02:47:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ClkTx [2021-11-23 02:47:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure WriteLPCReg [2021-11-23 02:47:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteLPCReg [2021-11-23 02:47:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-23 02:47:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-23 02:47:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-23 02:47:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-23 02:47:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-23 02:47:47,724 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-23 02:47:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure CommonInit [2021-11-23 02:47:47,724 INFO L138 BoogieDeclarations]: Found implementation of procedure CommonInit [2021-11-23 02:47:47,724 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:47:47,724 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:47:47,725 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-23 02:47:47,726 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-23 02:47:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:47:47,726 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:47:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:47:47,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:47:47,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 02:47:47,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 02:47:47,727 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_dongle_speed [2021-11-23 02:47:47,728 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_dongle_speed [2021-11-23 02:47:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure ReadLPCReg [2021-11-23 02:47:47,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadLPCReg [2021-11-23 02:47:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:47:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:47:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:47:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma [2021-11-23 02:47:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma [2021-11-23 02:47:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_via_ircc_cb [2021-11-23 02:47:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_via_ircc_cb [2021-11-23 02:47:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_receive [2021-11-23 02:47:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_receive [2021-11-23 02:47:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:47:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:47:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:47:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_xmit [2021-11-23 02:47:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_xmit [2021-11-23 02:47:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-23 02:47:47,733 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-23 02:47:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_close [2021-11-23 02:47:47,733 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_close [2021-11-23 02:47:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:47:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-23 02:47:47,734 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-23 02:47:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 02:47:47,735 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 02:47:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 02:47:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 02:47:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:47:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:47:47,739 INFO L130 BoogieDeclarations]: Found specification of procedure CkRxRecv [2021-11-23 02:47:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure CkRxRecv [2021-11-23 02:47:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 02:47:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 02:47:47,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:47:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:47:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 02:47:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 02:47:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2021-11-23 02:47:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2021-11-23 02:47:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-23 02:47:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-23 02:47:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:47:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-23 02:47:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-23 02:47:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendByte [2021-11-23 02:47:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendByte [2021-11-23 02:47:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-23 02:47:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-23 02:47:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:47:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:47:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure ReadReg [2021-11-23 02:47:47,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadReg [2021-11-23 02:47:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_open [2021-11-23 02:47:47,750 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_open [2021-11-23 02:47:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure WriteRegBit [2021-11-23 02:47:47,750 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteRegBit [2021-11-23 02:47:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:47:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Indx [2021-11-23 02:47:47,751 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Indx [2021-11-23 02:47:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2021-11-23 02:47:47,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2021-11-23 02:47:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:47:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:47:47,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:47:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:47:47,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:47:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:47:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:47:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:47:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:47:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:47:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure WriteReg [2021-11-23 02:47:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteReg [2021-11-23 02:47:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendPreambleCount [2021-11-23 02:47:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendPreambleCount [2021-11-23 02:47:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-23 02:47:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-23 02:47:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-23 02:47:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-23 02:47:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure InitCard [2021-11-23 02:47:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure InitCard [2021-11-23 02:47:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:47:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:47:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure SetTimer [2021-11-23 02:47:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure SetTimer [2021-11-23 02:47:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure ActClk [2021-11-23 02:47:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ActClk [2021-11-23 02:47:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 02:47:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 02:47:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:47:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:47:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure SetBaudRate [2021-11-23 02:47:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure SetBaudRate [2021-11-23 02:47:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Byte [2021-11-23 02:47:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Byte [2021-11-23 02:47:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-23 02:47:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-23 02:47:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 02:47:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 02:47:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure request_dma [2021-11-23 02:47:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure request_dma [2021-11-23 02:47:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-23 02:47:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-23 02:47:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:47:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-23 02:47:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-23 02:47:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_open [2021-11-23 02:47:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_open [2021-11-23 02:47:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:47:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:47:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2021-11-23 02:47:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2021-11-23 02:47:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:47:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:47:48,591 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:47:48,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:47:48,877 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:47:54,281 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:47:55,550 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:47:55,550 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:47:55,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:47:55 BoogieIcfgContainer [2021-11-23 02:47:55,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:47:55,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:47:55,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:47:55,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:47:55,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:47:42" (1/3) ... [2021-11-23 02:47:55,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe19859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:47:55, skipping insertion in model container [2021-11-23 02:47:55,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:46" (2/3) ... [2021-11-23 02:47:55,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe19859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:47:55, skipping insertion in model container [2021-11-23 02:47:55,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:47:55" (3/3) ... [2021-11-23 02:47:55,571 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-23 02:47:55,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:47:55,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:47:55,657 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:47:55,672 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:47:55,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:47:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 1493 states, 760 states have (on average 1.2263157894736842) internal successors, (932), 791 states have internal predecessors, (932), 641 states have call successors, (641), 91 states have call predecessors, (641), 90 states have return successors, (638), 626 states have call predecessors, (638), 638 states have call successors, (638) [2021-11-23 02:47:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-23 02:47:55,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:55,795 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 3, 3, 3, 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] [2021-11-23 02:47:55,795 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:47:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash 534279236, now seen corresponding path program 1 times [2021-11-23 02:47:55,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:55,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832507211] [2021-11-23 02:47:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:55,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-23 02:47:56,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:56,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832507211] [2021-11-23 02:47:56,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832507211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:56,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:56,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:47:56,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133644854] [2021-11-23 02:47:56,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:56,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:47:57,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:57,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:47:57,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:47:57,085 INFO L87 Difference]: Start difference. First operand has 1493 states, 760 states have (on average 1.2263157894736842) internal successors, (932), 791 states have internal predecessors, (932), 641 states have call successors, (641), 91 states have call predecessors, (641), 90 states have return successors, (638), 626 states have call predecessors, (638), 638 states have call successors, (638) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-23 02:47:59,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:02,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:04,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:05,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:05,131 INFO L93 Difference]: Finished difference Result 4227 states and 6280 transitions. [2021-11-23 02:48:05,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:48:05,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 199 [2021-11-23 02:48:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:05,182 INFO L225 Difference]: With dead ends: 4227 [2021-11-23 02:48:05,183 INFO L226 Difference]: Without dead ends: 2679 [2021-11-23 02:48:05,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:48:05,208 INFO L933 BasicCegarLoop]: 2586 mSDtfsCounter, 1830 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 4597 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:05,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1830 Valid, 4597 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2021-11-23 02:48:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2021-11-23 02:48:05,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2677. [2021-11-23 02:48:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 1380 states have (on average 1.2246376811594204) internal successors, (1690), 1433 states have internal predecessors, (1690), 1125 states have call successors, (1125), 171 states have call predecessors, (1125), 171 states have return successors, (1127), 1102 states have call predecessors, (1127), 1125 states have call successors, (1127) [2021-11-23 02:48:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 3942 transitions. [2021-11-23 02:48:05,597 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 3942 transitions. Word has length 199 [2021-11-23 02:48:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:05,599 INFO L470 AbstractCegarLoop]: Abstraction has 2677 states and 3942 transitions. [2021-11-23 02:48:05,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-23 02:48:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 3942 transitions. [2021-11-23 02:48:05,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-23 02:48:05,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:05,608 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 3, 3, 3, 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] [2021-11-23 02:48:05,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:48:05,608 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:48:05,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:05,609 INFO L85 PathProgramCache]: Analyzing trace with hash -902213699, now seen corresponding path program 1 times [2021-11-23 02:48:05,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:05,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385012724] [2021-11-23 02:48:05,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:05,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:06,054 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-23 02:48:06,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:06,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385012724] [2021-11-23 02:48:06,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385012724] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:48:06,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188458077] [2021-11-23 02:48:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:06,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:48:06,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:48:06,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:48:06,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:48:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:07,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 3698 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 02:48:07,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:48:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-23 02:48:25,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:48:25,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188458077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:25,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:48:25,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-11-23 02:48:25,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14875810] [2021-11-23 02:48:25,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:25,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:48:25,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:25,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:48:25,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:48:25,112 INFO L87 Difference]: Start difference. First operand 2677 states and 3942 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2021-11-23 02:48:31,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:33,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:35,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:37,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:39,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:46,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:48:48,036 INFO L93 Difference]: Finished difference Result 4173 states and 6106 transitions. [2021-11-23 02:48:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:48:48,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) Word has length 203 [2021-11-23 02:48:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:48:48,120 INFO L225 Difference]: With dead ends: 4173 [2021-11-23 02:48:48,121 INFO L226 Difference]: Without dead ends: 4171 [2021-11-23 02:48:48,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:48:48,136 INFO L933 BasicCegarLoop]: 2895 mSDtfsCounter, 1435 mSDsluCounter, 8960 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 11179 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:48:48,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 11179 Invalid, 1816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1813 Invalid, 2 Unknown, 0 Unchecked, 22.3s Time] [2021-11-23 02:48:48,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2021-11-23 02:48:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 4167. [2021-11-23 02:48:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4167 states, 2145 states have (on average 1.2181818181818183) internal successors, (2613), 2236 states have internal predecessors, (2613), 1736 states have call successors, (1736), 287 states have call predecessors, (1736), 285 states have return successors, (1751), 1691 states have call predecessors, (1751), 1736 states have call successors, (1751) [2021-11-23 02:48:48,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 6100 transitions. [2021-11-23 02:48:48,761 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 6100 transitions. Word has length 203 [2021-11-23 02:48:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:48:48,764 INFO L470 AbstractCegarLoop]: Abstraction has 4167 states and 6100 transitions. [2021-11-23 02:48:48,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2021-11-23 02:48:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 6100 transitions. [2021-11-23 02:48:48,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-23 02:48:48,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:48:48,777 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-11-23 02:48:48,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:48:48,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:48:48,993 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:48:48,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:48:48,994 INFO L85 PathProgramCache]: Analyzing trace with hash 459815014, now seen corresponding path program 1 times [2021-11-23 02:48:48,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:48:48,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278429712] [2021-11-23 02:48:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:48:48,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:48:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:48:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2021-11-23 02:48:50,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:48:50,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278429712] [2021-11-23 02:48:50,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278429712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:50,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:48:50,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:48:50,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471720394] [2021-11-23 02:48:50,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:50,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:48:50,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:50,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:48:50,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:48:50,385 INFO L87 Difference]: Start difference. First operand 4167 states and 6100 transitions. Second operand has 5 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 02:48:54,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:56,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:48:58,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:00,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:01,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:04,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:04,587 INFO L93 Difference]: Finished difference Result 6828 states and 10050 transitions. [2021-11-23 02:49:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:49:04,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 230 [2021-11-23 02:49:04,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:04,646 INFO L225 Difference]: With dead ends: 6828 [2021-11-23 02:49:04,646 INFO L226 Difference]: Without dead ends: 4165 [2021-11-23 02:49:04,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:49:04,682 INFO L933 BasicCegarLoop]: 1976 mSDtfsCounter, 6 mSDsluCounter, 6418 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7894 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:04,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 7894 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 677 Invalid, 2 Unknown, 0 Unchecked, 13.8s Time] [2021-11-23 02:49:04,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2021-11-23 02:49:05,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 4165. [2021-11-23 02:49:05,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 2144 states have (on average 1.2173507462686568) internal successors, (2610), 2235 states have internal predecessors, (2610), 1735 states have call successors, (1735), 287 states have call predecessors, (1735), 285 states have return successors, (1750), 1690 states have call predecessors, (1750), 1735 states have call successors, (1750) [2021-11-23 02:49:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 6095 transitions. [2021-11-23 02:49:05,154 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 6095 transitions. Word has length 230 [2021-11-23 02:49:05,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:05,157 INFO L470 AbstractCegarLoop]: Abstraction has 4165 states and 6095 transitions. [2021-11-23 02:49:05,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-23 02:49:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 6095 transitions. [2021-11-23 02:49:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2021-11-23 02:49:05,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:05,229 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 10, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:49:05,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:49:05,229 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:49:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1499293410, now seen corresponding path program 1 times [2021-11-23 02:49:05,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:05,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289395674] [2021-11-23 02:49:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:05,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 781 trivial. 0 not checked. [2021-11-23 02:49:06,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:06,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289395674] [2021-11-23 02:49:06,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289395674] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:49:06,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582670319] [2021-11-23 02:49:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:06,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:49:06,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:49:06,557 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:49:06,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:49:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:08,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 5053 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 02:49:08,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:49:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2021-11-23 02:49:09,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:49:09,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582670319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:09,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:49:09,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-11-23 02:49:09,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012490739] [2021-11-23 02:49:09,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:09,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:49:09,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:49:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:49:09,262 INFO L87 Difference]: Start difference. First operand 4165 states and 6095 transitions. Second operand has 10 states, 7 states have (on average 23.0) internal successors, (161), 9 states have internal predecessors, (161), 5 states have call successors, (80), 2 states have call predecessors, (80), 4 states have return successors, (77), 5 states have call predecessors, (77), 5 states have call successors, (77) [2021-11-23 02:49:12,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:14,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:16,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:18,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:20,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:21,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:24,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:26,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:28,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:31,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:35,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:35,338 INFO L93 Difference]: Finished difference Result 8652 states and 12693 transitions. [2021-11-23 02:49:35,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:49:35,340 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 23.0) internal successors, (161), 9 states have internal predecessors, (161), 5 states have call successors, (80), 2 states have call predecessors, (80), 4 states have return successors, (77), 5 states have call predecessors, (77), 5 states have call successors, (77) Word has length 415 [2021-11-23 02:49:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:35,402 INFO L225 Difference]: With dead ends: 8652 [2021-11-23 02:49:35,402 INFO L226 Difference]: Without dead ends: 4497 [2021-11-23 02:49:35,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:49:35,450 INFO L933 BasicCegarLoop]: 2060 mSDtfsCounter, 100 mSDsluCounter, 17594 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 81 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 18332 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:35,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 18332 Invalid, 1909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 1825 Invalid, 3 Unknown, 0 Unchecked, 25.5s Time] [2021-11-23 02:49:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4497 states. [2021-11-23 02:49:35,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4497 to 4189. [2021-11-23 02:49:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 2160 states have (on average 1.2157407407407408) internal successors, (2626), 2251 states have internal predecessors, (2626), 1743 states have call successors, (1743), 287 states have call predecessors, (1743), 285 states have return successors, (1758), 1698 states have call predecessors, (1758), 1743 states have call successors, (1758) [2021-11-23 02:49:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6127 transitions. [2021-11-23 02:49:35,998 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6127 transitions. Word has length 415 [2021-11-23 02:49:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:35,999 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 6127 transitions. [2021-11-23 02:49:35,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 23.0) internal successors, (161), 9 states have internal predecessors, (161), 5 states have call successors, (80), 2 states have call predecessors, (80), 4 states have return successors, (77), 5 states have call predecessors, (77), 5 states have call successors, (77) [2021-11-23 02:49:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6127 transitions. [2021-11-23 02:49:36,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-11-23 02:49:36,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:36,054 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 10, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:49:36,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:49:36,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:49:36,270 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:49:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1875997899, now seen corresponding path program 1 times [2021-11-23 02:49:36,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:36,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132345970] [2021-11-23 02:49:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:36,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2021-11-23 02:49:37,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:37,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132345970] [2021-11-23 02:49:37,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132345970] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:49:37,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084594036] [2021-11-23 02:49:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:37,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:49:37,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:49:37,365 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:49:37,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:49:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:38,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 5188 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 02:49:38,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:49:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-11-23 02:49:39,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:49:39,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084594036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:39,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:49:39,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2021-11-23 02:49:39,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841518467] [2021-11-23 02:49:39,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:39,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 02:49:39,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:39,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 02:49:39,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:49:39,692 INFO L87 Difference]: Start difference. First operand 4189 states and 6127 transitions. Second operand has 11 states, 8 states have (on average 21.5) internal successors, (172), 10 states have internal predecessors, (172), 5 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (84), 5 states have call predecessors, (84), 5 states have call successors, (84) [2021-11-23 02:49:43,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:50,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:52,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:56,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:58,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:00,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:02,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:03,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:06,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:08,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:50:12,405 INFO L93 Difference]: Finished difference Result 8728 states and 12793 transitions. [2021-11-23 02:50:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:50:12,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 21.5) internal successors, (172), 10 states have internal predecessors, (172), 5 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (84), 5 states have call predecessors, (84), 5 states have call successors, (84) Word has length 443 [2021-11-23 02:50:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:50:12,466 INFO L225 Difference]: With dead ends: 8728 [2021-11-23 02:50:12,466 INFO L226 Difference]: Without dead ends: 4549 [2021-11-23 02:50:12,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2021-11-23 02:50:12,507 INFO L933 BasicCegarLoop]: 2069 mSDtfsCounter, 108 mSDsluCounter, 19864 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 99 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 20446 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:50:12,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 20446 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2082 Invalid, 3 Unknown, 0 Unchecked, 32.2s Time] [2021-11-23 02:50:12,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2021-11-23 02:50:13,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4193. [2021-11-23 02:50:13,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4193 states, 2164 states have (on average 1.2153419593345656) internal successors, (2630), 2255 states have internal predecessors, (2630), 1743 states have call successors, (1743), 287 states have call predecessors, (1743), 285 states have return successors, (1758), 1698 states have call predecessors, (1758), 1743 states have call successors, (1758) [2021-11-23 02:50:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4193 states to 4193 states and 6131 transitions. [2021-11-23 02:50:13,125 INFO L78 Accepts]: Start accepts. Automaton has 4193 states and 6131 transitions. Word has length 443 [2021-11-23 02:50:13,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:50:13,126 INFO L470 AbstractCegarLoop]: Abstraction has 4193 states and 6131 transitions. [2021-11-23 02:50:13,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 21.5) internal successors, (172), 10 states have internal predecessors, (172), 5 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (84), 5 states have call predecessors, (84), 5 states have call successors, (84) [2021-11-23 02:50:13,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4193 states and 6131 transitions. [2021-11-23 02:50:13,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2021-11-23 02:50:13,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:50:13,190 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 16, 11, 9, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:50:13,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:50:13,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:50:13,417 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:50:13,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:50:13,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1257359314, now seen corresponding path program 1 times [2021-11-23 02:50:13,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:50:13,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552574580] [2021-11-23 02:50:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:13,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:50:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 1086 trivial. 0 not checked. [2021-11-23 02:50:14,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:50:14,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552574580] [2021-11-23 02:50:14,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552574580] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:50:14,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406176203] [2021-11-23 02:50:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:14,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:50:14,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:50:14,733 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:50:14,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:50:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:16,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 5868 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 02:50:16,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:50:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 630 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-11-23 02:50:17,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:50:17,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406176203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:50:17,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:50:17,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 21 [2021-11-23 02:50:17,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685579354] [2021-11-23 02:50:17,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:50:17,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:50:17,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:50:17,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:50:17,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:50:17,379 INFO L87 Difference]: Start difference. First operand 4193 states and 6131 transitions. Second operand has 13 states, 10 states have (on average 19.3) internal successors, (193), 11 states have internal predecessors, (193), 5 states have call successors, (100), 2 states have call predecessors, (100), 5 states have return successors, (97), 6 states have call predecessors, (97), 5 states have call successors, (97) [2021-11-23 02:50:22,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:24,389 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:27,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:28,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:30,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:31,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:36,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:38,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:40,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:41,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:43,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:46,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:47,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:50,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:50:54,986 INFO L93 Difference]: Finished difference Result 8784 states and 12869 transitions. [2021-11-23 02:50:54,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 02:50:54,986 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 19.3) internal successors, (193), 11 states have internal predecessors, (193), 5 states have call successors, (100), 2 states have call predecessors, (100), 5 states have return successors, (97), 6 states have call predecessors, (97), 5 states have call successors, (97) Word has length 500 [2021-11-23 02:50:54,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:50:55,040 INFO L225 Difference]: With dead ends: 8784 [2021-11-23 02:50:55,041 INFO L226 Difference]: Without dead ends: 4601 [2021-11-23 02:50:55,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2021-11-23 02:50:55,076 INFO L933 BasicCegarLoop]: 2067 mSDtfsCounter, 108 mSDsluCounter, 24312 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 24561 SdHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:50:55,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 24561 Invalid, 2627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 37.0s Time] [2021-11-23 02:50:55,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2021-11-23 02:50:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 4205. [2021-11-23 02:50:55,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 2172 states have (on average 1.214548802946593) internal successors, (2638), 2263 states have internal predecessors, (2638), 1743 states have call successors, (1743), 287 states have call predecessors, (1743), 289 states have return successors, (1766), 1702 states have call predecessors, (1766), 1743 states have call successors, (1766) [2021-11-23 02:50:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 6147 transitions. [2021-11-23 02:50:55,667 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 6147 transitions. Word has length 500 [2021-11-23 02:50:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:50:55,668 INFO L470 AbstractCegarLoop]: Abstraction has 4205 states and 6147 transitions. [2021-11-23 02:50:55,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 19.3) internal successors, (193), 11 states have internal predecessors, (193), 5 states have call successors, (100), 2 states have call predecessors, (100), 5 states have return successors, (97), 6 states have call predecessors, (97), 5 states have call successors, (97) [2021-11-23 02:50:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 6147 transitions. [2021-11-23 02:50:55,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2021-11-23 02:50:55,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:50:55,734 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 16, 13, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 02:50:55,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:50:55,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 02:50:55,949 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:50:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:50:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1335215982, now seen corresponding path program 1 times [2021-11-23 02:50:55,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:50:55,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207159250] [2021-11-23 02:50:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:55,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:50:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 1304 trivial. 0 not checked. [2021-11-23 02:50:57,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:50:57,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207159250] [2021-11-23 02:50:57,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207159250] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:50:57,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582372039] [2021-11-23 02:50:57,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:57,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:50:57,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:50:57,181 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:50:57,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:50:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:58,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 6403 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 02:50:58,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:51:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 733 proven. 0 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-11-23 02:51:00,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:51:00,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582372039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:00,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:51:00,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-11-23 02:51:00,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489099671] [2021-11-23 02:51:00,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:00,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:51:00,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:51:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:51:00,096 INFO L87 Difference]: Start difference. First operand 4205 states and 6147 transitions. Second operand has 6 states, 5 states have (on average 43.4) internal successors, (217), 6 states have internal predecessors, (217), 4 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (110), 3 states have call predecessors, (110), 4 states have call successors, (110) [2021-11-23 02:51:03,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:07,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:09,685 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:11,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:12,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:15,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:51:15,386 INFO L93 Difference]: Finished difference Result 6739 states and 9888 transitions. [2021-11-23 02:51:15,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:51:15,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 43.4) internal successors, (217), 6 states have internal predecessors, (217), 4 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (110), 3 states have call predecessors, (110), 4 states have call successors, (110) Word has length 575 [2021-11-23 02:51:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:51:15,426 INFO L225 Difference]: With dead ends: 6739 [2021-11-23 02:51:15,426 INFO L226 Difference]: Without dead ends: 4205 [2021-11-23 02:51:15,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:51:15,447 INFO L933 BasicCegarLoop]: 1971 mSDtfsCounter, 11 mSDsluCounter, 8527 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 9831 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:51:15,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 9831 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 871 Invalid, 1 Unknown, 0 Unchecked, 15.0s Time] [2021-11-23 02:51:15,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2021-11-23 02:51:15,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 4205. [2021-11-23 02:51:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 2172 states have (on average 1.2136279926335174) internal successors, (2636), 2263 states have internal predecessors, (2636), 1743 states have call successors, (1743), 287 states have call predecessors, (1743), 289 states have return successors, (1766), 1702 states have call predecessors, (1766), 1743 states have call successors, (1766) [2021-11-23 02:51:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 6145 transitions. [2021-11-23 02:51:15,877 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 6145 transitions. Word has length 575 [2021-11-23 02:51:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:51:15,880 INFO L470 AbstractCegarLoop]: Abstraction has 4205 states and 6145 transitions. [2021-11-23 02:51:15,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 43.4) internal successors, (217), 6 states have internal predecessors, (217), 4 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (110), 3 states have call predecessors, (110), 4 states have call successors, (110) [2021-11-23 02:51:15,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 6145 transitions. [2021-11-23 02:51:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2021-11-23 02:51:15,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:15,945 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 16, 13, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:51:16,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:51:16,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:51:16,169 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:16,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:16,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1275650287, now seen corresponding path program 1 times [2021-11-23 02:51:16,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:16,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208311542] [2021-11-23 02:51:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:16,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 22 proven. 36 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-11-23 02:51:17,491 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:17,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208311542] [2021-11-23 02:51:17,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208311542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:51:17,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48847879] [2021-11-23 02:51:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:17,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:51:17,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:51:17,497 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:51:17,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:51:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:18,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 6420 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 02:51:18,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:51:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 786 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-11-23 02:51:20,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:51:20,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48847879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:20,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:51:20,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 22 [2021-11-23 02:51:20,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394317920] [2021-11-23 02:51:20,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:20,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:51:20,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:20,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:51:20,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:51:20,419 INFO L87 Difference]: Start difference. First operand 4205 states and 6145 transitions. Second operand has 14 states, 11 states have (on average 20.90909090909091) internal successors, (230), 12 states have internal predecessors, (230), 6 states have call successors, (116), 2 states have call predecessors, (116), 5 states have return successors, (113), 7 states have call predecessors, (113), 6 states have call successors, (113) [2021-11-23 02:51:32,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:34,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:36,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:39,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:41,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:42,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:44,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:46,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:48,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:49,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:51,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:52,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:58,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:51:58,755 INFO L93 Difference]: Finished difference Result 8824 states and 12931 transitions. [2021-11-23 02:51:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 02:51:58,756 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 20.90909090909091) internal successors, (230), 12 states have internal predecessors, (230), 6 states have call successors, (116), 2 states have call predecessors, (116), 5 states have return successors, (113), 7 states have call predecessors, (113), 6 states have call successors, (113) Word has length 581 [2021-11-23 02:51:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:51:58,790 INFO L225 Difference]: With dead ends: 8824 [2021-11-23 02:51:58,790 INFO L226 Difference]: Without dead ends: 4629 [2021-11-23 02:51:58,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2021-11-23 02:51:58,811 INFO L933 BasicCegarLoop]: 2075 mSDtfsCounter, 112 mSDsluCounter, 26624 mSDsCounter, 0 mSdLazyCounter, 2734 mSolverCounterSat, 109 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 26717 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2734 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:51:58,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 26717 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2734 Invalid, 3 Unknown, 0 Unchecked, 37.7s Time] [2021-11-23 02:51:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2021-11-23 02:51:59,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 4223. [2021-11-23 02:51:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4223 states, 2182 states have (on average 1.2126489459211733) internal successors, (2646), 2275 states have internal predecessors, (2646), 1751 states have call successors, (1751), 287 states have call predecessors, (1751), 289 states have return successors, (1778), 1708 states have call predecessors, (1778), 1751 states have call successors, (1778) [2021-11-23 02:51:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 6175 transitions. [2021-11-23 02:51:59,216 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 6175 transitions. Word has length 581 [2021-11-23 02:51:59,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:51:59,218 INFO L470 AbstractCegarLoop]: Abstraction has 4223 states and 6175 transitions. [2021-11-23 02:51:59,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 20.90909090909091) internal successors, (230), 12 states have internal predecessors, (230), 6 states have call successors, (116), 2 states have call predecessors, (116), 5 states have return successors, (113), 7 states have call predecessors, (113), 6 states have call successors, (113) [2021-11-23 02:51:59,218 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 6175 transitions. [2021-11-23 02:51:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2021-11-23 02:51:59,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:59,253 INFO L514 BasicCegarLoop]: trace histogram [52, 19, 19, 15, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:51:59,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:51:59,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:51:59,481 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:59,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:59,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1346128964, now seen corresponding path program 1 times [2021-11-23 02:51:59,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:59,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834860242] [2021-11-23 02:51:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:59,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4108 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 4077 trivial. 0 not checked. [2021-11-23 02:52:00,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:00,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834860242] [2021-11-23 02:52:00,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834860242] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:52:00,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403160929] [2021-11-23 02:52:00,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:00,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:52:00,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:52:00,391 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:52:00,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:52:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:01,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 6628 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 02:52:01,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:52:03,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4108 backedges. 1022 proven. 0 refuted. 0 times theorem prover too weak. 3086 trivial. 0 not checked. [2021-11-23 02:52:03,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:52:03,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403160929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:03,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:52:03,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2021-11-23 02:52:03,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136416845] [2021-11-23 02:52:03,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:03,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:52:03,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:03,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:52:03,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:52:03,025 INFO L87 Difference]: Start difference. First operand 4223 states and 6175 transitions. Second operand has 7 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (114), 4 states have call predecessors, (114), 3 states have call successors, (114) [2021-11-23 02:52:07,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:12,030 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:13,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:15,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:17,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:52:20,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:52:20,182 INFO L93 Difference]: Finished difference Result 6939 states and 10203 transitions. [2021-11-23 02:52:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:52:20,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (114), 4 states have call predecessors, (114), 3 states have call successors, (114) Word has length 741 [2021-11-23 02:52:20,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:52:20,221 INFO L225 Difference]: With dead ends: 6939 [2021-11-23 02:52:20,222 INFO L226 Difference]: Without dead ends: 4389 [2021-11-23 02:52:20,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:52:20,242 INFO L933 BasicCegarLoop]: 2064 mSDtfsCounter, 39 mSDsluCounter, 11027 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 12262 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:52:20,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 12262 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1205 Invalid, 1 Unknown, 0 Unchecked, 16.9s Time] [2021-11-23 02:52:20,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2021-11-23 02:52:20,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 4235. [2021-11-23 02:52:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 2190 states have (on average 1.2118721461187214) internal successors, (2654), 2283 states have internal predecessors, (2654), 1753 states have call successors, (1753), 287 states have call predecessors, (1753), 291 states have return successors, (1786), 1712 states have call predecessors, (1786), 1753 states have call successors, (1786) [2021-11-23 02:52:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 6193 transitions. [2021-11-23 02:52:20,659 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 6193 transitions. Word has length 741 [2021-11-23 02:52:20,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:52:20,660 INFO L470 AbstractCegarLoop]: Abstraction has 4235 states and 6193 transitions. [2021-11-23 02:52:20,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (114), 4 states have call predecessors, (114), 3 states have call successors, (114) [2021-11-23 02:52:20,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 6193 transitions. [2021-11-23 02:52:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2021-11-23 02:52:20,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:52:20,697 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 16, 15, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:52:20,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:52:20,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:52:20,913 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:52:20,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:52:20,914 INFO L85 PathProgramCache]: Analyzing trace with hash -157298232, now seen corresponding path program 1 times [2021-11-23 02:52:20,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:52:20,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488431101] [2021-11-23 02:52:20,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:20,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:52:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2021-11-23 02:52:21,561 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:52:21,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488431101] [2021-11-23 02:52:21,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488431101] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:52:21,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751675203] [2021-11-23 02:52:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:52:21,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:52:21,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:52:21,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:52:21,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3755069f-48c5-429f-a232-75d6225e0bae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 02:52:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:52:23,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 6329 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 02:52:23,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:53:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 583 proven. 4 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2021-11-23 02:53:07,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:53:09,527 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 8191 disjunctions. This might take some time... [2021-11-23 02:53:15,256 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 8191 disjunctions. [2021-11-23 02:53:15,362 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 16383 disjunctions. This might take some time... [2021-11-23 02:53:42,362 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 16383 disjunctions. [2021-11-23 02:53:42,569 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 32767 disjunctions. This might take some time... [2021-11-23 02:55:39,127 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 32767 disjunctions.