./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--ohci-hcd.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/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_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--ohci-hcd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/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_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/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 4c74f17ad80d26d3384a467dad9313e9d7d1be91817d15d75e196d6ef78bc5b2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:49:11,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:49:11,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:49:11,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:49:11,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:49:11,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:49:11,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:49:11,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:49:11,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:49:11,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:49:11,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:49:11,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:49:11,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:49:11,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:49:11,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:49:11,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:49:11,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:49:11,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:49:11,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:49:11,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:49:11,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:49:11,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:49:11,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:49:11,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:49:11,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:49:11,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:49:11,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:49:11,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:49:11,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:49:11,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:49:11,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:49:11,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:49:11,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:49:11,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:49:11,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:49:11,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:49:11,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:49:11,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:49:11,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:49:11,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:49:11,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:49:11,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:49:11,276 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:49:11,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:49:11,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:49:11,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:49:11,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:49:11,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:49:11,278 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:49:11,279 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:49:11,279 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:49:11,279 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:49:11,279 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:49:11,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:49:11,280 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:49:11,280 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:49:11,280 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:49:11,280 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:49:11,280 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:49:11,281 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:49:11,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:49:11,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:49:11,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:49:11,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:49:11,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:49:11,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:49:11,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:49:11,283 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:49:11,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:49:11,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:49:11,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:49:11,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:49:11,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:49:11,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:49:11,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:49:11,285 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:49:11,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:49:11,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:49:11,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:49:11,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:49:11,286 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_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c74f17ad80d26d3384a467dad9313e9d7d1be91817d15d75e196d6ef78bc5b2 [2021-11-23 02:49:11,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:49:11,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:49:11,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:49:11,658 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:49:11,659 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:49:11,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--ohci-hcd.ko-entry_point.cil.out.i [2021-11-23 02:49:11,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/data/7459f788c/d529385738d84e659b4c98a397cecd75/FLAG416850808 [2021-11-23 02:49:12,772 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:49:12,773 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--ohci-hcd.ko-entry_point.cil.out.i [2021-11-23 02:49:12,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/data/7459f788c/d529385738d84e659b4c98a397cecd75/FLAG416850808 [2021-11-23 02:49:13,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/data/7459f788c/d529385738d84e659b4c98a397cecd75 [2021-11-23 02:49:13,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:49:13,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:49:13,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:49:13,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:49:13,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:49:13,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:49:13" (1/1) ... [2021-11-23 02:49:13,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e3f54bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:13, skipping insertion in model container [2021-11-23 02:49:13,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:49:13" (1/1) ... [2021-11-23 02:49:13,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:49:13,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:49:15,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--ohci-hcd.ko-entry_point.cil.out.i[315625,315638] [2021-11-23 02:49:15,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:49:15,941 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:49:16,557 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_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--ohci-hcd.ko-entry_point.cil.out.i[315625,315638] [2021-11-23 02:49:16,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:49:16,671 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:49:16,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:16 WrapperNode [2021-11-23 02:49:16,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:49:16,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:49:16,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:49:16,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:49:16,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:16" (1/1) ... [2021-11-23 02:49:16,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:16" (1/1) ... [2021-11-23 02:49:17,297 INFO L137 Inliner]: procedures = 259, calls = 4373, calls flagged for inlining = 103, calls inlined = 98, statements flattened = 8445 [2021-11-23 02:49:17,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:49:17,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:49:17,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:49:17,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:49:17,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:16" (1/1) ... [2021-11-23 02:49:17,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:16" (1/1) ... [2021-11-23 02:49:17,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:16" (1/1) ... [2021-11-23 02:49:17,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:16" (1/1) ... [2021-11-23 02:49:17,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:16" (1/1) ... [2021-11-23 02:49:17,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:16" (1/1) ... [2021-11-23 02:49:17,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:16" (1/1) ... [2021-11-23 02:49:17,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:49:17,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:49:17,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:49:17,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:49:17,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:16" (1/1) ... [2021-11-23 02:49:17,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:49:17,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:49:17,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:49:17,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:49:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_ohci [2021-11-23 02:49:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_ohci [2021-11-23 02:49:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 02:49:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 02:49:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure start_ed_unlink [2021-11-23 02:49:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure start_ed_unlink [2021-11-23 02:49:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_status [2021-11-23 02:49:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_status [2021-11-23 02:49:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:49:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:49:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:49:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:49:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2021-11-23 02:49:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2021-11-23 02:49:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure show_list [2021-11-23 02:49:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure show_list [2021-11-23 02:49:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-23 02:49:17,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-23 02:49:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:49:17,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:49:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-23 02:49:17,862 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-23 02:49:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpup [2021-11-23 02:49:17,863 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpup [2021-11-23 02:49:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure hcfs2string [2021-11-23 02:49:17,863 INFO L138 BoogieDeclarations]: Found implementation of procedure hcfs2string [2021-11-23 02:49:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_zfmicro [2021-11-23 02:49:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_zfmicro [2021-11-23 02:49:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hub_status_data [2021-11-23 02:49:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hub_status_data [2021-11-23 02:49:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_shutdown [2021-11-23 02:49:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_shutdown [2021-11-23 02:49:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:49:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:49:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:49:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:49:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_intr_mask [2021-11-23 02:49:17,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_intr_mask [2021-11-23 02:49:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_buffer [2021-11-23 02:49:17,866 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_buffer [2021-11-23 02:49:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure _ohci_writel [2021-11-23 02:49:17,867 INFO L138 BoogieDeclarations]: Found implementation of procedure _ohci_writel [2021-11-23 02:49:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 02:49:17,867 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 02:49:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:49:17,867 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:49:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hwPSWp [2021-11-23 02:49:17,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hwPSWp [2021-11-23 02:49:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:49:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:49:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure debug_output [2021-11-23 02:49:17,870 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_output [2021-11-23 02:49:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure ed_schedule [2021-11-23 02:49:17,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_schedule [2021-11-23 02:49:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-11-23 02:49:17,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-11-23 02:49:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_roothub [2021-11-23 02:49:17,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_roothub [2021-11-23 02:49:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:49:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_stop [2021-11-23 02:49:17,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_stop [2021-11-23 02:49:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:49:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:49:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:49:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2021-11-23 02:49:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2021-11-23 02:49:17,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-23 02:49:17,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-23 02:49:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_nec [2021-11-23 02:49:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_nec [2021-11-23 02:49:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_restart [2021-11-23 02:49:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_restart [2021-11-23 02:49:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:49:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:49:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2021-11-23 02:49:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2021-11-23 02:49:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure update_done_list [2021-11-23 02:49:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure update_done_list [2021-11-23 02:49:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure td_free [2021-11-23 02:49:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure td_free [2021-11-23 02:49:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:49:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_rh_resume [2021-11-23 02:49:17,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_rh_resume [2021-11-23 02:49:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:49:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_portstatus [2021-11-23 02:49:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_portstatus [2021-11-23 02:49:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hc_died [2021-11-23 02:49:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hc_died [2021-11-23 02:49:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-23 02:49:17,878 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-23 02:49:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 02:49:17,879 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 02:49:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-11-23 02:49:17,880 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-11-23 02:49:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:49:17,880 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:49:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure ed_free [2021-11-23 02:49:17,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_free [2021-11-23 02:49:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:49:17,881 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:49:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_start [2021-11-23 02:49:17,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_start [2021-11-23 02:49:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump [2021-11-23 02:49:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump [2021-11-23 02:49:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_setup [2021-11-23 02:49:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_setup [2021-11-23 02:49:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_frame_no [2021-11-23 02:49:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_frame_no [2021-11-23 02:49:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:49:17,883 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:49:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure sb800_prefetch [2021-11-23 02:49:17,884 INFO L138 BoogieDeclarations]: Found implementation of procedure sb800_prefetch [2021-11-23 02:49:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-11-23 02:49:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-11-23 02:49:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hub_control [2021-11-23 02:49:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hub_control [2021-11-23 02:49:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_unlink_urb_from_ep [2021-11-23 02:49:17,889 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_unlink_urb_from_ep [2021-11-23 02:49:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:49:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure finish_urb [2021-11-23 02:49:17,890 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_urb [2021-11-23 02:49:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-23 02:49:17,896 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-23 02:49:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_rh_suspend [2021-11-23 02:49:17,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_rh_suspend [2021-11-23 02:49:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_a [2021-11-23 02:49:17,897 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_a [2021-11-23 02:49:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_irq [2021-11-23 02:49:17,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_irq [2021-11-23 02:49:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure rh_state_string [2021-11-23 02:49:17,898 INFO L138 BoogieDeclarations]: Found implementation of procedure rh_state_string [2021-11-23 02:49:17,898 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_b [2021-11-23 02:49:17,898 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_b [2021-11-23 02:49:17,898 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_urb_enqueue [2021-11-23 02:49:17,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_urb_enqueue [2021-11-23 02:49:17,898 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_start_port_reset [2021-11-23 02:49:17,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_start_port_reset [2021-11-23 02:49:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_to_hcd [2021-11-23 02:49:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_to_hcd [2021-11-23 02:49:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 02:49:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 02:49:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure td_alloc [2021-11-23 02:49:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure td_alloc [2021-11-23 02:49:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure find_head [2021-11-23 02:49:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure find_head [2021-11-23 02:49:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-11-23 02:49:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-11-23 02:49:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:49:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:49:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_run [2021-11-23 02:49:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_run [2021-11-23 02:49:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2021-11-23 02:49:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2021-11-23 02:49:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_endpoint_disable [2021-11-23 02:49:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_endpoint_disable [2021-11-23 02:49:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:49:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_amdprefetch [2021-11-23 02:49:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_amdprefetch [2021-11-23 02:49:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-23 02:49:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-23 02:49:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:49:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:49:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2021-11-23 02:49:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2021-11-23 02:49:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 02:49:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 02:49:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure add_to_done_list [2021-11-23 02:49:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure add_to_done_list [2021-11-23 02:49:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure _ohci_readl [2021-11-23 02:49:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure _ohci_readl [2021-11-23 02:49:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:49:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-11-23 02:49:17,904 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-11-23 02:49:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_poll_rh_status [2021-11-23 02:49:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_poll_rh_status [2021-11-23 02:49:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 02:49:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 02:49:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-23 02:49:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-23 02:49:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:49:17,905 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_reinit [2021-11-23 02:49:17,905 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_reinit [2021-11-23 02:49:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2021-11-23 02:49:17,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2021-11-23 02:49:17,906 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:49:17,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:49:17,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:49:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure td_done [2021-11-23 02:49:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure td_done [2021-11-23 02:49:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure td_fill [2021-11-23 02:49:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure td_fill [2021-11-23 02:49:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_urb_dequeue [2021-11-23 02:49:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_urb_dequeue [2021-11-23 02:49:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_init [2021-11-23 02:49:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_init [2021-11-23 02:49:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-23 02:49:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-23 02:49:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_work [2021-11-23 02:49:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_work [2021-11-23 02:49:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_amdiso [2021-11-23 02:49:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_amdiso [2021-11-23 02:49:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2021-11-23 02:49:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2021-11-23 02:49:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-23 02:49:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-23 02:49:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure ed_deschedule [2021-11-23 02:49:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_deschedule [2021-11-23 02:49:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_resume_root_hub [2021-11-23 02:49:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_resume_root_hub [2021-11-23 02:49:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-23 02:49:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-23 02:49:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure urb_free_priv [2021-11-23 02:49:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_free_priv [2021-11-23 02:49:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpu [2021-11-23 02:49:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpu [2021-11-23 02:49:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_status [2021-11-23 02:49:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_status [2021-11-23 02:49:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure maybe_print_eds [2021-11-23 02:49:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure maybe_print_eds [2021-11-23 02:49:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure debug_close [2021-11-23 02:49:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_close [2021-11-23 02:49:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_get_frame [2021-11-23 02:49:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_get_frame [2021-11-23 02:49:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:49:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:49:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-23 02:49:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-23 02:49:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc32 [2021-11-23 02:49:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc32 [2021-11-23 02:49:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:49:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:49:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_usb_reset [2021-11-23 02:49:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_usb_reset [2021-11-23 02:49:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_bus_resume [2021-11-23 02:49:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_bus_resume [2021-11-23 02:49:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 02:49:17,914 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 02:49:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_bus_suspend [2021-11-23 02:49:17,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_bus_suspend [2021-11-23 02:49:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:49:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:49:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:49:17,920 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2021-11-23 02:49:17,920 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2021-11-23 02:49:19,064 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:49:19,069 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:49:19,605 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:49:28,514 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:49:31,221 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:49:31,221 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 02:49:31,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:31 BoogieIcfgContainer [2021-11-23 02:49:31,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:49:31,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:49:31,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:49:31,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:49:31,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:49:13" (1/3) ... [2021-11-23 02:49:31,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441ff61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:49:31, skipping insertion in model container [2021-11-23 02:49:31,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:49:16" (2/3) ... [2021-11-23 02:49:31,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441ff61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:49:31, skipping insertion in model container [2021-11-23 02:49:31,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:49:31" (3/3) ... [2021-11-23 02:49:31,245 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--host--ohci-hcd.ko-entry_point.cil.out.i [2021-11-23 02:49:31,254 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:49:31,254 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:49:31,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:49:31,362 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 02:49:31,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:49:31,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 2367 states, 1495 states have (on average 1.3578595317725752) internal successors, (2030), 1565 states have internal predecessors, (2030), 759 states have call successors, (759), 116 states have call predecessors, (759), 115 states have return successors, (752), 745 states have call predecessors, (752), 752 states have call successors, (752) [2021-11-23 02:49:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-23 02:49:31,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:31,522 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:31,522 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:49:31,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:31,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1328296461, now seen corresponding path program 1 times [2021-11-23 02:49:31,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:31,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35189598] [2021-11-23 02:49:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:31,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:32,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2021-11-23 02:49:32,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:32,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35189598] [2021-11-23 02:49:32,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35189598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:32,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:49:32,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:49:32,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044017062] [2021-11-23 02:49:32,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:32,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:49:32,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:32,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:49:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:32,924 INFO L87 Difference]: Start difference. First operand has 2367 states, 1495 states have (on average 1.3578595317725752) internal successors, (2030), 1565 states have internal predecessors, (2030), 759 states have call successors, (759), 116 states have call predecessors, (759), 115 states have return successors, (752), 745 states have call predecessors, (752), 752 states have call successors, (752) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2021-11-23 02:49:34,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:38,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:38,633 INFO L93 Difference]: Finished difference Result 6942 states and 10491 transitions. [2021-11-23 02:49:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:49:38,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 270 [2021-11-23 02:49:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:38,902 INFO L225 Difference]: With dead ends: 6942 [2021-11-23 02:49:38,902 INFO L226 Difference]: Without dead ends: 4605 [2021-11-23 02:49:38,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:38,947 INFO L933 BasicCegarLoop]: 3941 mSDtfsCounter, 3471 mSDsluCounter, 3420 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 7079 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:38,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3471 Valid, 7079 Invalid, 587 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 02:49:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2021-11-23 02:49:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4601. [2021-11-23 02:49:39,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4601 states, 2914 states have (on average 1.3544955387783115) internal successors, (3947), 3037 states have internal predecessors, (3947), 1459 states have call successors, (1459), 228 states have call predecessors, (1459), 227 states have return successors, (1458), 1443 states have call predecessors, (1458), 1458 states have call successors, (1458) [2021-11-23 02:49:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 6864 transitions. [2021-11-23 02:49:39,645 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 6864 transitions. Word has length 270 [2021-11-23 02:49:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:39,650 INFO L470 AbstractCegarLoop]: Abstraction has 4601 states and 6864 transitions. [2021-11-23 02:49:39,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2021-11-23 02:49:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 6864 transitions. [2021-11-23 02:49:39,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-23 02:49:39,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:39,664 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:39,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:49:39,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:49:39,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:39,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1274680962, now seen corresponding path program 1 times [2021-11-23 02:49:39,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:39,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209450770] [2021-11-23 02:49:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:39,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2021-11-23 02:49:40,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:40,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209450770] [2021-11-23 02:49:40,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209450770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:40,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:49:40,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:49:40,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385252519] [2021-11-23 02:49:40,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:40,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:49:40,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:40,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:49:40,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:40,304 INFO L87 Difference]: Start difference. First operand 4601 states and 6864 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2021-11-23 02:49:42,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:46,508 INFO L93 Difference]: Finished difference Result 13646 states and 20355 transitions. [2021-11-23 02:49:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:49:46,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 273 [2021-11-23 02:49:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:46,652 INFO L225 Difference]: With dead ends: 13646 [2021-11-23 02:49:46,653 INFO L226 Difference]: Without dead ends: 9100 [2021-11-23 02:49:46,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:46,706 INFO L933 BasicCegarLoop]: 3947 mSDtfsCounter, 3363 mSDsluCounter, 3475 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3363 SdHoareTripleChecker+Valid, 7139 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:46,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3363 Valid, 7139 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 589 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-23 02:49:46,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9100 states. [2021-11-23 02:49:47,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9100 to 9095. [2021-11-23 02:49:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9095 states, 5764 states have (on average 1.3553088133240805) internal successors, (7812), 6011 states have internal predecessors, (7812), 2877 states have call successors, (2877), 454 states have call predecessors, (2877), 453 states have return successors, (2876), 2845 states have call predecessors, (2876), 2876 states have call successors, (2876) [2021-11-23 02:49:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9095 states to 9095 states and 13565 transitions. [2021-11-23 02:49:47,725 INFO L78 Accepts]: Start accepts. Automaton has 9095 states and 13565 transitions. Word has length 273 [2021-11-23 02:49:47,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:47,729 INFO L470 AbstractCegarLoop]: Abstraction has 9095 states and 13565 transitions. [2021-11-23 02:49:47,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2021-11-23 02:49:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 9095 states and 13565 transitions. [2021-11-23 02:49:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-23 02:49:47,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:47,740 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:47,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:49:47,740 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:49:47,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash -127004323, now seen corresponding path program 1 times [2021-11-23 02:49:47,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:47,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737608352] [2021-11-23 02:49:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:47,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2021-11-23 02:49:48,259 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:48,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737608352] [2021-11-23 02:49:48,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737608352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:48,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:49:48,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:49:48,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206008649] [2021-11-23 02:49:48,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:48,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:49:48,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:48,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:49:48,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:48,263 INFO L87 Difference]: Start difference. First operand 9095 states and 13565 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2021-11-23 02:49:50,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:49:54,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:54,451 INFO L93 Difference]: Finished difference Result 26915 states and 40149 transitions. [2021-11-23 02:49:54,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:49:54,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 275 [2021-11-23 02:49:54,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:54,670 INFO L225 Difference]: With dead ends: 26915 [2021-11-23 02:49:54,670 INFO L226 Difference]: Without dead ends: 17875 [2021-11-23 02:49:54,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:54,762 INFO L933 BasicCegarLoop]: 4072 mSDtfsCounter, 3341 mSDsluCounter, 3475 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3341 SdHoareTripleChecker+Valid, 7263 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:54,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3341 Valid, 7263 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 615 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-23 02:49:54,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17875 states. [2021-11-23 02:49:55,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17875 to 17872. [2021-11-23 02:49:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17872 states, 11335 states have (on average 1.3558888398764888) internal successors, (15369), 11823 states have internal predecessors, (15369), 5645 states have call successors, (5645), 892 states have call predecessors, (5645), 891 states have return successors, (5644), 5585 states have call predecessors, (5644), 5644 states have call successors, (5644) [2021-11-23 02:49:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17872 states to 17872 states and 26658 transitions. [2021-11-23 02:49:56,156 INFO L78 Accepts]: Start accepts. Automaton has 17872 states and 26658 transitions. Word has length 275 [2021-11-23 02:49:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:56,162 INFO L470 AbstractCegarLoop]: Abstraction has 17872 states and 26658 transitions. [2021-11-23 02:49:56,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2021-11-23 02:49:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 17872 states and 26658 transitions. [2021-11-23 02:49:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-23 02:49:56,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:56,174 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:49:56,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:49:56,175 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:49:56,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:56,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2060201623, now seen corresponding path program 1 times [2021-11-23 02:49:56,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:56,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155874741] [2021-11-23 02:49:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:56,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2021-11-23 02:49:56,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:56,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155874741] [2021-11-23 02:49:56,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155874741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:56,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:49:56,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:49:56,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136791879] [2021-11-23 02:49:56,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:56,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:49:56,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:49:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:56,930 INFO L87 Difference]: Start difference. First operand 17872 states and 26658 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 02:49:59,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:03,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:50:03,334 INFO L93 Difference]: Finished difference Result 47464 states and 70307 transitions. [2021-11-23 02:50:03,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:50:03,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 290 [2021-11-23 02:50:03,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:50:03,535 INFO L225 Difference]: With dead ends: 47464 [2021-11-23 02:50:03,536 INFO L226 Difference]: Without dead ends: 29647 [2021-11-23 02:50:03,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:50:03,651 INFO L933 BasicCegarLoop]: 4236 mSDtfsCounter, 2324 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2324 SdHoareTripleChecker+Valid, 7329 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:50:03,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2324 Valid, 7329 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 748 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-23 02:50:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29647 states. [2021-11-23 02:50:05,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29647 to 29640. [2021-11-23 02:50:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29640 states, 18734 states have (on average 1.3425856731077186) internal successors, (25152), 19503 states have internal predecessors, (25152), 9282 states have call successors, (9282), 1624 states have call predecessors, (9282), 1623 states have return successors, (9281), 9194 states have call predecessors, (9281), 9281 states have call successors, (9281) [2021-11-23 02:50:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29640 states to 29640 states and 43715 transitions. [2021-11-23 02:50:05,952 INFO L78 Accepts]: Start accepts. Automaton has 29640 states and 43715 transitions. Word has length 290 [2021-11-23 02:50:05,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:50:05,953 INFO L470 AbstractCegarLoop]: Abstraction has 29640 states and 43715 transitions. [2021-11-23 02:50:05,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 02:50:05,954 INFO L276 IsEmpty]: Start isEmpty. Operand 29640 states and 43715 transitions. [2021-11-23 02:50:05,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-11-23 02:50:05,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:50:05,969 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 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] [2021-11-23 02:50:05,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:50:05,970 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:50:05,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:50:05,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1437495976, now seen corresponding path program 1 times [2021-11-23 02:50:05,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:50:05,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380605206] [2021-11-23 02:50:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:05,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:50:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2202 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2200 trivial. 0 not checked. [2021-11-23 02:50:06,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:50:06,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380605206] [2021-11-23 02:50:06,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380605206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:50:06,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:50:06,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:50:06,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482640027] [2021-11-23 02:50:06,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:50:06,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:50:06,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:50:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:50:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:50:06,513 INFO L87 Difference]: Start difference. First operand 29640 states and 43715 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-23 02:50:08,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:13,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:50:13,585 INFO L93 Difference]: Finished difference Result 59273 states and 87414 transitions. [2021-11-23 02:50:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:50:13,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 378 [2021-11-23 02:50:13,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:50:13,959 INFO L225 Difference]: With dead ends: 59273 [2021-11-23 02:50:13,959 INFO L226 Difference]: Without dead ends: 29640 [2021-11-23 02:50:14,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:50:14,112 INFO L933 BasicCegarLoop]: 3203 mSDtfsCounter, 3 mSDsluCounter, 6973 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9605 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:50:14,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 9605 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 867 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-23 02:50:14,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29640 states. [2021-11-23 02:50:15,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29640 to 29640. [2021-11-23 02:50:15,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29640 states, 18734 states have (on average 1.3417316109746984) internal successors, (25136), 19503 states have internal predecessors, (25136), 9282 states have call successors, (9282), 1624 states have call predecessors, (9282), 1623 states have return successors, (9281), 9194 states have call predecessors, (9281), 9281 states have call successors, (9281) [2021-11-23 02:50:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29640 states to 29640 states and 43699 transitions. [2021-11-23 02:50:16,379 INFO L78 Accepts]: Start accepts. Automaton has 29640 states and 43699 transitions. Word has length 378 [2021-11-23 02:50:16,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:50:16,381 INFO L470 AbstractCegarLoop]: Abstraction has 29640 states and 43699 transitions. [2021-11-23 02:50:16,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-23 02:50:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 29640 states and 43699 transitions. [2021-11-23 02:50:16,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2021-11-23 02:50:16,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:50:16,397 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 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] [2021-11-23 02:50:16,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:50:16,397 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:50:16,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:50:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash -413037131, now seen corresponding path program 1 times [2021-11-23 02:50:16,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:50:16,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108814514] [2021-11-23 02:50:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:16,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:50:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:17,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2202 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2202 trivial. 0 not checked. [2021-11-23 02:50:17,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:50:17,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108814514] [2021-11-23 02:50:17,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108814514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:50:17,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:50:17,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:50:17,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080437434] [2021-11-23 02:50:17,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:50:17,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:50:17,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:50:17,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:50:17,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:50:17,258 INFO L87 Difference]: Start difference. First operand 29640 states and 43699 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-23 02:50:19,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:22,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:50:22,652 INFO L93 Difference]: Finished difference Result 34557 states and 50251 transitions. [2021-11-23 02:50:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:50:22,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 396 [2021-11-23 02:50:22,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:50:23,057 INFO L225 Difference]: With dead ends: 34557 [2021-11-23 02:50:23,057 INFO L226 Difference]: Without dead ends: 34554 [2021-11-23 02:50:23,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:50:23,077 INFO L933 BasicCegarLoop]: 3588 mSDtfsCounter, 1787 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 5483 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:50:23,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1787 Valid, 5483 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 536 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-23 02:50:23,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34554 states. [2021-11-23 02:50:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34554 to 34335. [2021-11-23 02:50:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34335 states, 21502 states have (on average 1.3301088270858525) internal successors, (28600), 22317 states have internal predecessors, (28600), 10650 states have call successors, (10650), 2175 states have call predecessors, (10650), 2182 states have return successors, (10673), 10532 states have call predecessors, (10673), 10649 states have call successors, (10673) [2021-11-23 02:50:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34335 states to 34335 states and 49923 transitions. [2021-11-23 02:50:25,658 INFO L78 Accepts]: Start accepts. Automaton has 34335 states and 49923 transitions. Word has length 396 [2021-11-23 02:50:25,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:50:25,660 INFO L470 AbstractCegarLoop]: Abstraction has 34335 states and 49923 transitions. [2021-11-23 02:50:25,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-23 02:50:25,660 INFO L276 IsEmpty]: Start isEmpty. Operand 34335 states and 49923 transitions. [2021-11-23 02:50:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-11-23 02:50:25,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:50:25,707 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 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] [2021-11-23 02:50:25,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:50:25,707 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:50:25,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:50:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1473148601, now seen corresponding path program 1 times [2021-11-23 02:50:25,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:50:25,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759291351] [2021-11-23 02:50:25,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:25,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:50:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2204 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2200 trivial. 0 not checked. [2021-11-23 02:50:26,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:50:26,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759291351] [2021-11-23 02:50:26,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759291351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:50:26,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:50:26,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:50:26,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165114019] [2021-11-23 02:50:26,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:50:26,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:50:26,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:50:26,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:50:26,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:50:26,185 INFO L87 Difference]: Start difference. First operand 34335 states and 49923 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 02:50:28,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:33,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:50:33,850 INFO L93 Difference]: Finished difference Result 88668 states and 129138 transitions. [2021-11-23 02:50:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:50:33,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 417 [2021-11-23 02:50:33,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:50:34,182 INFO L225 Difference]: With dead ends: 88668 [2021-11-23 02:50:34,183 INFO L226 Difference]: Without dead ends: 54388 [2021-11-23 02:50:34,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:50:34,337 INFO L933 BasicCegarLoop]: 4569 mSDtfsCounter, 3253 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3253 SdHoareTripleChecker+Valid, 7622 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:50:34,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3253 Valid, 7622 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 811 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-23 02:50:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54388 states. [2021-11-23 02:50:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54388 to 54381. [2021-11-23 02:50:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54381 states, 34179 states have (on average 1.3287106117791627) internal successors, (45414), 35514 states have internal predecessors, (45414), 16762 states have call successors, (16762), 3424 states have call predecessors, (16762), 3439 states have return successors, (16809), 16568 states have call predecessors, (16809), 16761 states have call successors, (16809) [2021-11-23 02:50:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54381 states to 54381 states and 78985 transitions. [2021-11-23 02:50:37,830 INFO L78 Accepts]: Start accepts. Automaton has 54381 states and 78985 transitions. Word has length 417 [2021-11-23 02:50:37,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:50:37,835 INFO L470 AbstractCegarLoop]: Abstraction has 54381 states and 78985 transitions. [2021-11-23 02:50:37,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-23 02:50:37,835 INFO L276 IsEmpty]: Start isEmpty. Operand 54381 states and 78985 transitions. [2021-11-23 02:50:37,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2021-11-23 02:50:37,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:50:37,872 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 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] [2021-11-23 02:50:37,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:50:37,872 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:50:37,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:50:37,874 INFO L85 PathProgramCache]: Analyzing trace with hash 483149507, now seen corresponding path program 1 times [2021-11-23 02:50:37,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:50:37,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182104634] [2021-11-23 02:50:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:50:37,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:50:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:50:38,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2204 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2200 trivial. 0 not checked. [2021-11-23 02:50:38,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:50:38,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182104634] [2021-11-23 02:50:38,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182104634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:50:38,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:50:38,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:50:38,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524989433] [2021-11-23 02:50:38,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:50:38,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:50:38,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:50:38,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:50:38,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:50:38,694 INFO L87 Difference]: Start difference. First operand 54381 states and 78985 transitions. Second operand has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (42), 4 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-23 02:50:40,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:50:53,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:50:53,888 INFO L93 Difference]: Finished difference Result 163337 states and 237457 transitions. [2021-11-23 02:50:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:50:53,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (42), 4 states have call predecessors, (42), 2 states have call successors, (42) Word has length 415 [2021-11-23 02:50:53,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:50:54,545 INFO L225 Difference]: With dead ends: 163337 [2021-11-23 02:50:54,545 INFO L226 Difference]: Without dead ends: 109011 [2021-11-23 02:50:54,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:50:54,737 INFO L933 BasicCegarLoop]: 4674 mSDtfsCounter, 3410 mSDsluCounter, 23785 mSDsCounter, 0 mSdLazyCounter, 2327 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3420 SdHoareTripleChecker+Valid, 26568 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2327 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:50:54,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3420 Valid, 26568 Invalid, 2329 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2327 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2021-11-23 02:50:54,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109011 states. [2021-11-23 02:50:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109011 to 102689. [2021-11-23 02:50:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102689 states, 64554 states have (on average 1.3288719521640797) internal successors, (85784), 67129 states have internal predecessors, (85784), 31592 states have call successors, (31592), 6423 states have call predecessors, (31592), 6542 states have return successors, (32054), 31271 states have call predecessors, (32054), 31591 states have call successors, (32054) [2021-11-23 02:51:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102689 states to 102689 states and 149430 transitions. [2021-11-23 02:51:01,023 INFO L78 Accepts]: Start accepts. Automaton has 102689 states and 149430 transitions. Word has length 415 [2021-11-23 02:51:01,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:51:01,024 INFO L470 AbstractCegarLoop]: Abstraction has 102689 states and 149430 transitions. [2021-11-23 02:51:01,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (42), 4 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-23 02:51:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 102689 states and 149430 transitions. [2021-11-23 02:51:01,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2021-11-23 02:51:01,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:01,075 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 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] [2021-11-23 02:51:01,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:51:01,076 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:01,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:01,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1263130037, now seen corresponding path program 1 times [2021-11-23 02:51:01,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:01,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200154056] [2021-11-23 02:51:01,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:01,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2204 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2200 trivial. 0 not checked. [2021-11-23 02:51:01,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:01,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200154056] [2021-11-23 02:51:01,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200154056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:01,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:51:01,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:51:01,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795578444] [2021-11-23 02:51:01,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:01,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:51:01,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:51:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:51:01,644 INFO L87 Difference]: Start difference. First operand 102689 states and 149430 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-23 02:51:03,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:10,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:51:10,665 INFO L93 Difference]: Finished difference Result 157395 states and 228910 transitions. [2021-11-23 02:51:10,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:51:10,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 419 [2021-11-23 02:51:10,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:51:11,002 INFO L225 Difference]: With dead ends: 157395 [2021-11-23 02:51:11,003 INFO L226 Difference]: Without dead ends: 54409 [2021-11-23 02:51:11,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:51:11,311 INFO L933 BasicCegarLoop]: 3201 mSDtfsCounter, 6 mSDsluCounter, 10456 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12801 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:51:11,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 12801 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1155 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 02:51:11,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54409 states. [2021-11-23 02:51:13,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54409 to 54361. [2021-11-23 02:51:13,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54361 states, 34177 states have (on average 1.3279983614711648) internal successors, (45387), 35519 states have internal predecessors, (45387), 16722 states have call successors, (16722), 3400 states have call predecessors, (16722), 3461 states have return successors, (16939), 16567 states have call predecessors, (16939), 16721 states have call successors, (16939) [2021-11-23 02:51:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54361 states to 54361 states and 79048 transitions. [2021-11-23 02:51:13,817 INFO L78 Accepts]: Start accepts. Automaton has 54361 states and 79048 transitions. Word has length 419 [2021-11-23 02:51:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:51:13,818 INFO L470 AbstractCegarLoop]: Abstraction has 54361 states and 79048 transitions. [2021-11-23 02:51:13,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-23 02:51:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 54361 states and 79048 transitions. [2021-11-23 02:51:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2021-11-23 02:51:13,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:13,848 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 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] [2021-11-23 02:51:13,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:51:13,849 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:13,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:13,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1149185990, now seen corresponding path program 1 times [2021-11-23 02:51:13,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:13,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277384745] [2021-11-23 02:51:13,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:13,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2238 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 2163 trivial. 0 not checked. [2021-11-23 02:51:14,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:14,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277384745] [2021-11-23 02:51:14,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277384745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:51:14,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602920056] [2021-11-23 02:51:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:14,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:51:14,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:51:14,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:51:14,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:51:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:17,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 7403 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:51:17,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:51:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2238 backedges. 1209 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2021-11-23 02:51:18,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:51:18,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602920056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:51:18,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:51:18,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-23 02:51:18,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367053825] [2021-11-23 02:51:18,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:51:18,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:51:18,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:51:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:51:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:51:18,490 INFO L87 Difference]: Start difference. First operand 54361 states and 79048 transitions. Second operand has 6 states, 4 states have (on average 26.25) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-23 02:51:20,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:51:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:51:27,267 INFO L93 Difference]: Finished difference Result 108782 states and 158631 transitions. [2021-11-23 02:51:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:51:27,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 26.25) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 419 [2021-11-23 02:51:27,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:51:27,615 INFO L225 Difference]: With dead ends: 108782 [2021-11-23 02:51:27,615 INFO L226 Difference]: Without dead ends: 54400 [2021-11-23 02:51:27,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:51:27,789 INFO L933 BasicCegarLoop]: 3182 mSDtfsCounter, 3 mSDsluCounter, 13827 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 15870 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:51:27,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 15870 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1556 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-23 02:51:27,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54400 states. [2021-11-23 02:51:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54400 to 54400. [2021-11-23 02:51:29,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54400 states, 34216 states have (on average 1.327624503156418) internal successors, (45426), 35558 states have internal predecessors, (45426), 16722 states have call successors, (16722), 3400 states have call predecessors, (16722), 3461 states have return successors, (16939), 16567 states have call predecessors, (16939), 16721 states have call successors, (16939) [2021-11-23 02:51:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54400 states to 54400 states and 79087 transitions. [2021-11-23 02:51:30,012 INFO L78 Accepts]: Start accepts. Automaton has 54400 states and 79087 transitions. Word has length 419 [2021-11-23 02:51:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:51:30,013 INFO L470 AbstractCegarLoop]: Abstraction has 54400 states and 79087 transitions. [2021-11-23 02:51:30,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 26.25) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-23 02:51:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 54400 states and 79087 transitions. [2021-11-23 02:51:30,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-11-23 02:51:30,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:51:30,035 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 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] [2021-11-23 02:51:30,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:51:30,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 02:51:30,250 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:51:30,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:51:30,250 INFO L85 PathProgramCache]: Analyzing trace with hash 845094838, now seen corresponding path program 1 times [2021-11-23 02:51:30,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:51:30,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206676752] [2021-11-23 02:51:30,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:30,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:51:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:31,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2614 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 2493 trivial. 0 not checked. [2021-11-23 02:51:31,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:51:31,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206676752] [2021-11-23 02:51:31,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206676752] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:51:31,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264281840] [2021-11-23 02:51:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:51:31,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:51:31,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:51:31,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:51:31,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a5c1027-2fd2-4ca6-9b90-2c52ddd1547f/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:51:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:51:35,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 7499 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 02:51:35,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:51:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2614 backedges. 1142 proven. 5 refuted. 0 times theorem prover too weak. 1467 trivial. 0 not checked. [2021-11-23 02:51:36,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:51:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2614 backedges. 16 proven. 105 refuted. 0 times theorem prover too weak. 2493 trivial. 0 not checked. [2021-11-23 02:51:38,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264281840] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:51:38,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [315810281] [2021-11-23 02:51:38,300 INFO L159 IcfgInterpreter]: Started Sifa with 149 locations of interest [2021-11-23 02:51:38,300 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:51:38,306 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:51:38,311 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:51:38,312 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs