./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 11d3d0800a0e0d53b4d0190c9a443eccbd843952940cf36579a7110b5d32d86b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:47:42,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:47:42,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:47:42,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:47:42,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:47:42,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:47:42,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:47:42,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:47:42,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:47:42,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:47:42,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:47:42,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:47:42,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:47:42,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:47:42,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:47:42,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:47:42,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:47:42,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:47:42,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:47:42,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:47:42,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:47:42,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:47:42,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:47:42,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:47:42,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:47:42,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:47:42,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:47:42,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:47:42,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:47:42,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:47:42,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:47:42,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:47:42,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:47:42,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:47:42,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:47:42,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:47:42,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:47:42,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:47:42,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:47:42,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:47:42,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:47:42,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 17:47:42,293 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:47:42,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:47:42,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:47:42,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:47:42,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:47:42,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:47:42,301 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:47:42,302 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:47:42,302 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:47:42,302 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:47:42,303 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:47:42,303 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:47:42,303 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:47:42,304 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:47:42,304 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:47:42,304 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:47:42,304 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:47:42,304 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:47:42,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:47:42,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:47:42,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:47:42,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:47:42,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:47:42,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:47:42,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:47:42,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:47:42,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:47:42,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:47:42,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:47:42,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:47:42,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:47:42,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:47:42,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:47:42,309 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:47:42,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:47:42,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:47:42,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:47:42,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:47:42,310 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_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11d3d0800a0e0d53b4d0190c9a443eccbd843952940cf36579a7110b5d32d86b [2021-11-25 17:47:42,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:47:42,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:47:42,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:47:42,617 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:47:42,618 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:47:42,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-25 17:47:42,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/data/125e6aa9f/8b5245753f4049dba00ff6ff1354611b/FLAGd22734cb9 [2021-11-25 17:47:43,637 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:47:43,638 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-25 17:47:43,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/data/125e6aa9f/8b5245753f4049dba00ff6ff1354611b/FLAGd22734cb9 [2021-11-25 17:47:44,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/data/125e6aa9f/8b5245753f4049dba00ff6ff1354611b [2021-11-25 17:47:44,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:47:44,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:47:44,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:47:44,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:47:44,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:47:44,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:47:44" (1/1) ... [2021-11-25 17:47:44,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f94b8b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:44, skipping insertion in model container [2021-11-25 17:47:44,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:47:44" (1/1) ... [2021-11-25 17:47:44,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:47:44,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:47:46,705 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_7db05af1-405c-4727-8202-98ab6ae6d09e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[323389,323402] [2021-11-25 17:47:46,707 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_7db05af1-405c-4727-8202-98ab6ae6d09e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[323534,323547] [2021-11-25 17:47:46,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:47:46,768 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:47:47,217 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_7db05af1-405c-4727-8202-98ab6ae6d09e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[323389,323402] [2021-11-25 17:47:47,217 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_7db05af1-405c-4727-8202-98ab6ae6d09e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[323534,323547] [2021-11-25 17:47:47,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:47:47,388 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:47:47,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:47 WrapperNode [2021-11-25 17:47:47,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:47:47,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:47:47,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:47:47,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:47:47,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:47" (1/1) ... [2021-11-25 17:47:47,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:47" (1/1) ... [2021-11-25 17:47:47,752 INFO L137 Inliner]: procedures = 379, calls = 2098, calls flagged for inlining = 146, calls inlined = 127, statements flattened = 4154 [2021-11-25 17:47:47,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:47:47,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:47:47,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:47:47,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:47:47,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:47" (1/1) ... [2021-11-25 17:47:47,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:47" (1/1) ... [2021-11-25 17:47:47,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:47" (1/1) ... [2021-11-25 17:47:47,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:47" (1/1) ... [2021-11-25 17:47:47,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:47" (1/1) ... [2021-11-25 17:47:47,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:47" (1/1) ... [2021-11-25 17:47:47,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:47" (1/1) ... [2021-11-25 17:47:47,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:47:47,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:47:47,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:47:47,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:47:47,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:47" (1/1) ... [2021-11-25 17:47:48,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:47:48,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:47:48,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:47:48,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:47:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2021-11-25 17:47:48,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2021-11-25 17:47:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure ResetChip [2021-11-25 17:47:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ResetChip [2021-11-25 17:47:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 17:47:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 17:47:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 17:47:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 17:47:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 17:47:48,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 17:47:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure RxCurCount [2021-11-25 17:47:48,091 INFO L138 BoogieDeclarations]: Found implementation of procedure RxCurCount [2021-11-25 17:47:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_txqueue_empty [2021-11-25 17:47:48,091 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_device_txqueue_empty [2021-11-25 17:47:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2021-11-25 17:47:48,092 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_setup_dma [2021-11-25 17:47:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 17:47:48,092 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 17:47:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 17:47:48,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 17:47:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-25 17:47:48,092 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-25 17:47:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure Sdelay [2021-11-25 17:47:48,093 INFO L138 BoogieDeclarations]: Found implementation of procedure Sdelay [2021-11-25 17:47:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 17:47:48,093 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 17:47:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure CheckRegBit [2021-11-25 17:47:48,093 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckRegBit [2021-11-25 17:47:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure via_remove_one [2021-11-25 17:47:48,094 INFO L138 BoogieDeclarations]: Found implementation of procedure via_remove_one [2021-11-25 17:47:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure SetSIR [2021-11-25 17:47:48,094 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSIR [2021-11-25 17:47:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_speed [2021-11-25 17:47:48,094 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_speed [2021-11-25 17:47:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 17:47:48,095 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 17:47:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure SetMaxRxPacketSize [2021-11-25 17:47:48,095 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMaxRxPacketSize [2021-11-25 17:47:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-25 17:47:48,095 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-25 17:47:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure GetRecvByte [2021-11-25 17:47:48,096 INFO L138 BoogieDeclarations]: Found implementation of procedure GetRecvByte [2021-11-25 17:47:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 17:47:48,096 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 17:47:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:47:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 17:47:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 17:47:48,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 17:47:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure SetPulseWidth [2021-11-25 17:47:48,097 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPulseWidth [2021-11-25 17:47:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure Tdelay [2021-11-25 17:47:48,097 INFO L138 BoogieDeclarations]: Found implementation of procedure Tdelay [2021-11-25 17:47:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-25 17:47:48,098 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-25 17:47:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 17:47:48,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 17:47:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure hwreset [2021-11-25 17:47:48,098 INFO L138 BoogieDeclarations]: Found implementation of procedure hwreset [2021-11-25 17:47:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:47:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 17:47:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure ClkTx [2021-11-25 17:47:48,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ClkTx [2021-11-25 17:47:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure WriteLPCReg [2021-11-25 17:47:48,099 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteLPCReg [2021-11-25 17:47:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-25 17:47:48,100 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-25 17:47:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 17:47:48,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 17:47:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-25 17:47:48,100 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-25 17:47:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure CommonInit [2021-11-25 17:47:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure CommonInit [2021-11-25 17:47:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 17:47:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 17:47:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-25 17:47:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-25 17:47:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 17:47:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 17:47:48,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 17:47:48,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 17:47:48,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 17:47:48,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 17:47:48,102 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_dongle_speed [2021-11-25 17:47:48,102 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_dongle_speed [2021-11-25 17:47:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure ReadLPCReg [2021-11-25 17:47:48,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadLPCReg [2021-11-25 17:47:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 17:47:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 17:47:48,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 17:47:48,103 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma [2021-11-25 17:47:48,104 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma [2021-11-25 17:47:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_via_ircc_cb [2021-11-25 17:47:48,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_via_ircc_cb [2021-11-25 17:47:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_receive [2021-11-25 17:47:48,104 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_receive [2021-11-25 17:47:48,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 17:47:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 17:47:48,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 17:47:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_xmit [2021-11-25 17:47:48,105 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_xmit [2021-11-25 17:47:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-25 17:47:48,105 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-25 17:47:48,105 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_close [2021-11-25 17:47:48,106 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_close [2021-11-25 17:47:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 17:47:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 17:47:48,106 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 17:47:48,106 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 17:47:48,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 17:47:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 17:47:48,107 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 17:47:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 17:47:48,107 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 17:47:48,107 INFO L130 BoogieDeclarations]: Found specification of procedure CkRxRecv [2021-11-25 17:47:48,107 INFO L138 BoogieDeclarations]: Found implementation of procedure CkRxRecv [2021-11-25 17:47:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 17:47:48,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 17:47:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 17:47:48,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 17:47:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 17:47:48,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 17:47:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2021-11-25 17:47:48,109 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2021-11-25 17:47:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-25 17:47:48,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-25 17:47:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:47:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-25 17:47:48,109 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-25 17:47:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendByte [2021-11-25 17:47:48,110 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendByte [2021-11-25 17:47:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-25 17:47:48,110 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-25 17:47:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 17:47:48,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 17:47:48,110 INFO L130 BoogieDeclarations]: Found specification of procedure ReadReg [2021-11-25 17:47:48,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadReg [2021-11-25 17:47:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_open [2021-11-25 17:47:48,111 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_open [2021-11-25 17:47:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure WriteRegBit [2021-11-25 17:47:48,111 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteRegBit [2021-11-25 17:47:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 17:47:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Indx [2021-11-25 17:47:48,112 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Indx [2021-11-25 17:47:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2021-11-25 17:47:48,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2021-11-25 17:47:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:47:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 17:47:48,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 17:47:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 17:47:48,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 17:47:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 17:47:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 17:47:48,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 17:47:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 17:47:48,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 17:47:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure WriteReg [2021-11-25 17:47:48,114 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteReg [2021-11-25 17:47:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendPreambleCount [2021-11-25 17:47:48,114 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendPreambleCount [2021-11-25 17:47:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-25 17:47:48,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-25 17:47:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-25 17:47:48,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-25 17:47:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure InitCard [2021-11-25 17:47:48,115 INFO L138 BoogieDeclarations]: Found implementation of procedure InitCard [2021-11-25 17:47:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 17:47:48,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 17:47:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure SetTimer [2021-11-25 17:47:48,115 INFO L138 BoogieDeclarations]: Found implementation of procedure SetTimer [2021-11-25 17:47:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure ActClk [2021-11-25 17:47:48,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ActClk [2021-11-25 17:47:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 17:47:48,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 17:47:48,116 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 17:47:48,116 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 17:47:48,117 INFO L130 BoogieDeclarations]: Found specification of procedure SetBaudRate [2021-11-25 17:47:48,117 INFO L138 BoogieDeclarations]: Found implementation of procedure SetBaudRate [2021-11-25 17:47:48,117 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Byte [2021-11-25 17:47:48,117 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Byte [2021-11-25 17:47:48,117 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 17:47:48,117 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 17:47:48,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 17:47:48,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 17:47:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure request_dma [2021-11-25 17:47:48,118 INFO L138 BoogieDeclarations]: Found implementation of procedure request_dma [2021-11-25 17:47:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-25 17:47:48,118 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-25 17:47:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:47:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-25 17:47:48,119 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-25 17:47:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_open [2021-11-25 17:47:48,119 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_open [2021-11-25 17:47:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 17:47:48,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 17:47:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2021-11-25 17:47:48,119 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2021-11-25 17:47:48,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:47:48,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:47:48,841 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:47:48,847 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:47:49,052 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 17:47:53,178 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:47:54,244 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:47:54,245 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 17:47:54,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:47:54 BoogieIcfgContainer [2021-11-25 17:47:54,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:47:54,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:47:54,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:47:54,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:47:54,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:47:44" (1/3) ... [2021-11-25 17:47:54,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e93e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:47:54, skipping insertion in model container [2021-11-25 17:47:54,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:47:47" (2/3) ... [2021-11-25 17:47:54,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e93e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:47:54, skipping insertion in model container [2021-11-25 17:47:54,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:47:54" (3/3) ... [2021-11-25 17:47:54,259 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-25 17:47:54,264 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:47:54,265 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 17:47:54,331 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:47:54,346 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 [2021-11-25 17:47:54,346 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 17:47:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 1493 states, 760 states have (on average 1.2263157894736842) internal successors, (932), 791 states have internal predecessors, (932), 641 states have call successors, (641), 91 states have call predecessors, (641), 90 states have return successors, (638), 626 states have call predecessors, (638), 638 states have call successors, (638) [2021-11-25 17:47:54,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-25 17:47:54,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:47:54,456 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:47:54,457 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:47:54,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:47:54,462 INFO L85 PathProgramCache]: Analyzing trace with hash 534279236, now seen corresponding path program 1 times [2021-11-25 17:47:54,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:47:54,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986338898] [2021-11-25 17:47:54,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:47:54,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:47:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:47:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-25 17:47:55,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:47:55,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986338898] [2021-11-25 17:47:55,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986338898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:47:55,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:47:55,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:47:55,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717211710] [2021-11-25 17:47:55,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:47:55,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:47:55,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:47:55,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:47:55,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:47:55,502 INFO L87 Difference]: Start difference. First operand has 1493 states, 760 states have (on average 1.2263157894736842) internal successors, (932), 791 states have internal predecessors, (932), 641 states have call successors, (641), 91 states have call predecessors, (641), 90 states have return successors, (638), 626 states have call predecessors, (638), 638 states have call successors, (638) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-25 17:47:56,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:47:59,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:48:01,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:48:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:01,461 INFO L93 Difference]: Finished difference Result 4227 states and 6280 transitions. [2021-11-25 17:48:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:48:01,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 199 [2021-11-25 17:48:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:01,509 INFO L225 Difference]: With dead ends: 4227 [2021-11-25 17:48:01,510 INFO L226 Difference]: Without dead ends: 2679 [2021-11-25 17:48:01,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:48:01,534 INFO L933 BasicCegarLoop]: 2586 mSDtfsCounter, 1830 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 4597 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:01,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1830 Valid, 4597 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-25 17:48:01,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2021-11-25 17:48:01,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2677. [2021-11-25 17:48:01,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 1380 states have (on average 1.2246376811594204) internal successors, (1690), 1433 states have internal predecessors, (1690), 1125 states have call successors, (1125), 171 states have call predecessors, (1125), 171 states have return successors, (1127), 1102 states have call predecessors, (1127), 1125 states have call successors, (1127) [2021-11-25 17:48:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 3942 transitions. [2021-11-25 17:48:01,925 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 3942 transitions. Word has length 199 [2021-11-25 17:48:01,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:01,927 INFO L470 AbstractCegarLoop]: Abstraction has 2677 states and 3942 transitions. [2021-11-25 17:48:01,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-25 17:48:01,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 3942 transitions. [2021-11-25 17:48:01,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-25 17:48:01,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:01,935 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:48:01,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:48:01,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:48:01,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:01,937 INFO L85 PathProgramCache]: Analyzing trace with hash -902213699, now seen corresponding path program 1 times [2021-11-25 17:48:01,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:01,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452156638] [2021-11-25 17:48:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:01,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-25 17:48:02,347 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:02,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452156638] [2021-11-25 17:48:02,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452156638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:48:02,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841324509] [2021-11-25 17:48:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:02,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:48:02,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:48:02,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:48:02,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 17:48:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:03,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 4039 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 17:48:03,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:48:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-11-25 17:48:14,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:48:14,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841324509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:14,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:48:14,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-11-25 17:48:14,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903060030] [2021-11-25 17:48:14,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:14,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 17:48:14,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:14,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 17:48:14,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-25 17:48:14,769 INFO L87 Difference]: Start difference. First operand 2677 states and 3942 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2021-11-25 17:48:19,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:48:22,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:48:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:28,431 INFO L93 Difference]: Finished difference Result 4173 states and 6106 transitions. [2021-11-25 17:48:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:48:28,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) Word has length 203 [2021-11-25 17:48:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:28,474 INFO L225 Difference]: With dead ends: 4173 [2021-11-25 17:48:28,474 INFO L226 Difference]: Without dead ends: 4171 [2021-11-25 17:48:28,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:48:28,480 INFO L933 BasicCegarLoop]: 2895 mSDtfsCounter, 1435 mSDsluCounter, 8958 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 11179 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:28,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 11179 Invalid, 1814 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1812 Invalid, 1 Unknown, 0 Unchecked, 13.2s Time] [2021-11-25 17:48:28,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2021-11-25 17:48:28,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 4167. [2021-11-25 17:48:28,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4167 states, 2145 states have (on average 1.2181818181818183) internal successors, (2613), 2236 states have internal predecessors, (2613), 1736 states have call successors, (1736), 287 states have call predecessors, (1736), 285 states have return successors, (1751), 1691 states have call predecessors, (1751), 1736 states have call successors, (1751) [2021-11-25 17:48:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 6100 transitions. [2021-11-25 17:48:28,967 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 6100 transitions. Word has length 203 [2021-11-25 17:48:28,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:28,968 INFO L470 AbstractCegarLoop]: Abstraction has 4167 states and 6100 transitions. [2021-11-25 17:48:28,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2021-11-25 17:48:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 6100 transitions. [2021-11-25 17:48:28,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-25 17:48:28,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:28,976 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:48:29,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 17:48:29,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:48:29,190 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:48:29,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:29,190 INFO L85 PathProgramCache]: Analyzing trace with hash 459815014, now seen corresponding path program 1 times [2021-11-25 17:48:29,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:29,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147351790] [2021-11-25 17:48:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:29,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2021-11-25 17:48:30,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:30,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147351790] [2021-11-25 17:48:30,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147351790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:30,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:48:30,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:48:30,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991187251] [2021-11-25 17:48:30,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:30,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:48:30,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:48:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:48:30,351 INFO L87 Difference]: Start difference. First operand 4167 states and 6100 transitions. Second operand has 5 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 17:48:33,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:48:34,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:48:36,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:48:39,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:39,086 INFO L93 Difference]: Finished difference Result 6828 states and 10050 transitions. [2021-11-25 17:48:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:48:39,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 230 [2021-11-25 17:48:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:39,129 INFO L225 Difference]: With dead ends: 6828 [2021-11-25 17:48:39,130 INFO L226 Difference]: Without dead ends: 4165 [2021-11-25 17:48:39,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 17:48:39,156 INFO L933 BasicCegarLoop]: 1976 mSDtfsCounter, 6 mSDsluCounter, 6418 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7894 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:39,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 7894 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2021-11-25 17:48:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2021-11-25 17:48:39,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 4165. [2021-11-25 17:48:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 2144 states have (on average 1.2173507462686568) internal successors, (2610), 2235 states have internal predecessors, (2610), 1735 states have call successors, (1735), 287 states have call predecessors, (1735), 285 states have return successors, (1750), 1690 states have call predecessors, (1750), 1735 states have call successors, (1750) [2021-11-25 17:48:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 6095 transitions. [2021-11-25 17:48:39,583 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 6095 transitions. Word has length 230 [2021-11-25 17:48:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:39,585 INFO L470 AbstractCegarLoop]: Abstraction has 4165 states and 6095 transitions. [2021-11-25 17:48:39,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 17:48:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 6095 transitions. [2021-11-25 17:48:39,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2021-11-25 17:48:39,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:39,645 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 10, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:48:39,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:48:39,645 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:48:39,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:39,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1499293410, now seen corresponding path program 1 times [2021-11-25 17:48:39,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:39,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780637274] [2021-11-25 17:48:39,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:39,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 781 trivial. 0 not checked. [2021-11-25 17:48:40,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:48:40,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780637274] [2021-11-25 17:48:40,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780637274] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:48:40,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103208698] [2021-11-25 17:48:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:40,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:48:40,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:48:40,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:48:40,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 17:48:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:48:42,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 5496 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-25 17:48:42,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:48:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2021-11-25 17:48:42,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:48:42,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103208698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:48:42,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:48:42,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-11-25 17:48:42,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78796413] [2021-11-25 17:48:42,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:48:42,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:48:42,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:48:42,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:48:42,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:48:42,892 INFO L87 Difference]: Start difference. First operand 4165 states and 6095 transitions. Second operand has 10 states, 7 states have (on average 23.0) internal successors, (161), 9 states have internal predecessors, (161), 5 states have call successors, (80), 2 states have call predecessors, (80), 4 states have return successors, (77), 5 states have call predecessors, (77), 5 states have call successors, (77) [2021-11-25 17:48:45,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:48:48,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:48:50,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:48:51,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:48:52,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:00,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:00,788 INFO L93 Difference]: Finished difference Result 8652 states and 12693 transitions. [2021-11-25 17:49:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:49:00,788 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 23.0) internal successors, (161), 9 states have internal predecessors, (161), 5 states have call successors, (80), 2 states have call predecessors, (80), 4 states have return successors, (77), 5 states have call predecessors, (77), 5 states have call successors, (77) Word has length 415 [2021-11-25 17:49:00,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:00,835 INFO L225 Difference]: With dead ends: 8652 [2021-11-25 17:49:00,835 INFO L226 Difference]: Without dead ends: 4497 [2021-11-25 17:49:00,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:49:00,872 INFO L933 BasicCegarLoop]: 2060 mSDtfsCounter, 100 mSDsluCounter, 17602 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 18332 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:00,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 18332 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 17.4s Time] [2021-11-25 17:49:00,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4497 states. [2021-11-25 17:49:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4497 to 4189. [2021-11-25 17:49:01,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 2160 states have (on average 1.2157407407407408) internal successors, (2626), 2251 states have internal predecessors, (2626), 1743 states have call successors, (1743), 287 states have call predecessors, (1743), 285 states have return successors, (1758), 1698 states have call predecessors, (1758), 1743 states have call successors, (1758) [2021-11-25 17:49:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6127 transitions. [2021-11-25 17:49:01,400 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6127 transitions. Word has length 415 [2021-11-25 17:49:01,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:01,401 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 6127 transitions. [2021-11-25 17:49:01,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 23.0) internal successors, (161), 9 states have internal predecessors, (161), 5 states have call successors, (80), 2 states have call predecessors, (80), 4 states have return successors, (77), 5 states have call predecessors, (77), 5 states have call successors, (77) [2021-11-25 17:49:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6127 transitions. [2021-11-25 17:49:01,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-11-25 17:49:01,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:01,446 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 10, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:49:01,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 17:49:01,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:49:01,660 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:49:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1875997899, now seen corresponding path program 1 times [2021-11-25 17:49:01,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:01,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955011318] [2021-11-25 17:49:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:01,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2021-11-25 17:49:02,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:02,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955011318] [2021-11-25 17:49:02,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955011318] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:49:02,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504938107] [2021-11-25 17:49:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:02,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:49:02,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:49:02,595 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:49:02,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 17:49:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:03,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 5631 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 17:49:03,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:49:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-11-25 17:49:04,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:49:04,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504938107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:04,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:49:04,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2021-11-25 17:49:04,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264435517] [2021-11-25 17:49:04,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:04,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:49:04,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:04,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:49:04,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:49:04,726 INFO L87 Difference]: Start difference. First operand 4189 states and 6127 transitions. Second operand has 11 states, 8 states have (on average 21.5) internal successors, (172), 10 states have internal predecessors, (172), 5 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (84), 5 states have call predecessors, (84), 5 states have call successors, (84) [2021-11-25 17:49:06,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:12,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:14,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:15,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:16,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:18,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:19,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:21,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:22,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:23,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:26,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:26,079 INFO L93 Difference]: Finished difference Result 8728 states and 12793 transitions. [2021-11-25 17:49:26,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 17:49:26,080 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 21.5) internal successors, (172), 10 states have internal predecessors, (172), 5 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (84), 5 states have call predecessors, (84), 5 states have call successors, (84) Word has length 443 [2021-11-25 17:49:26,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:26,123 INFO L225 Difference]: With dead ends: 8728 [2021-11-25 17:49:26,124 INFO L226 Difference]: Without dead ends: 4549 [2021-11-25 17:49:26,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2021-11-25 17:49:26,229 INFO L933 BasicCegarLoop]: 2069 mSDtfsCounter, 108 mSDsluCounter, 19864 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 20446 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:26,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 20446 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2021-11-25 17:49:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2021-11-25 17:49:26,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4193. [2021-11-25 17:49:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4193 states, 2164 states have (on average 1.2153419593345656) internal successors, (2630), 2255 states have internal predecessors, (2630), 1743 states have call successors, (1743), 287 states have call predecessors, (1743), 285 states have return successors, (1758), 1698 states have call predecessors, (1758), 1743 states have call successors, (1758) [2021-11-25 17:49:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4193 states to 4193 states and 6131 transitions. [2021-11-25 17:49:26,669 INFO L78 Accepts]: Start accepts. Automaton has 4193 states and 6131 transitions. Word has length 443 [2021-11-25 17:49:26,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:26,669 INFO L470 AbstractCegarLoop]: Abstraction has 4193 states and 6131 transitions. [2021-11-25 17:49:26,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 21.5) internal successors, (172), 10 states have internal predecessors, (172), 5 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (84), 5 states have call predecessors, (84), 5 states have call successors, (84) [2021-11-25 17:49:26,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4193 states and 6131 transitions. [2021-11-25 17:49:26,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2021-11-25 17:49:26,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:26,718 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 16, 11, 9, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:49:26,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 17:49:26,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:49:26,938 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:49:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1257359314, now seen corresponding path program 1 times [2021-11-25 17:49:26,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:26,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013347087] [2021-11-25 17:49:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:26,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 1086 trivial. 0 not checked. [2021-11-25 17:49:28,012 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:28,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013347087] [2021-11-25 17:49:28,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013347087] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:49:28,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557224256] [2021-11-25 17:49:28,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:28,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:49:28,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:49:28,014 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:49:28,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 17:49:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:29,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 6350 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 17:49:29,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:49:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 630 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-11-25 17:49:30,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:49:30,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557224256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:30,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:49:30,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 21 [2021-11-25 17:49:30,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845695784] [2021-11-25 17:49:30,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:30,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:49:30,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:49:30,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:49:30,380 INFO L87 Difference]: Start difference. First operand 4193 states and 6131 transitions. Second operand has 13 states, 10 states have (on average 19.3) internal successors, (193), 11 states have internal predecessors, (193), 5 states have call successors, (100), 2 states have call predecessors, (100), 5 states have return successors, (97), 6 states have call predecessors, (97), 5 states have call successors, (97) [2021-11-25 17:49:37,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:38,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:40,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:42,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:46,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:49:46,516 INFO L93 Difference]: Finished difference Result 8784 states and 12869 transitions. [2021-11-25 17:49:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:49:46,517 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 19.3) internal successors, (193), 11 states have internal predecessors, (193), 5 states have call successors, (100), 2 states have call predecessors, (100), 5 states have return successors, (97), 6 states have call predecessors, (97), 5 states have call successors, (97) Word has length 500 [2021-11-25 17:49:46,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:49:46,556 INFO L225 Difference]: With dead ends: 8784 [2021-11-25 17:49:46,556 INFO L226 Difference]: Without dead ends: 4601 [2021-11-25 17:49:46,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2021-11-25 17:49:46,582 INFO L933 BasicCegarLoop]: 2067 mSDtfsCounter, 108 mSDsluCounter, 24301 mSDsCounter, 0 mSdLazyCounter, 2509 mSolverCounterSat, 106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 24561 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2509 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:49:46,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 24561 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2509 Invalid, 1 Unknown, 0 Unchecked, 15.7s Time] [2021-11-25 17:49:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2021-11-25 17:49:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 4205. [2021-11-25 17:49:46,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 2172 states have (on average 1.214548802946593) internal successors, (2638), 2263 states have internal predecessors, (2638), 1743 states have call successors, (1743), 287 states have call predecessors, (1743), 289 states have return successors, (1766), 1702 states have call predecessors, (1766), 1743 states have call successors, (1766) [2021-11-25 17:49:46,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 6147 transitions. [2021-11-25 17:49:46,933 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 6147 transitions. Word has length 500 [2021-11-25 17:49:46,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:49:46,934 INFO L470 AbstractCegarLoop]: Abstraction has 4205 states and 6147 transitions. [2021-11-25 17:49:46,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 19.3) internal successors, (193), 11 states have internal predecessors, (193), 5 states have call successors, (100), 2 states have call predecessors, (100), 5 states have return successors, (97), 6 states have call predecessors, (97), 5 states have call successors, (97) [2021-11-25 17:49:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 6147 transitions. [2021-11-25 17:49:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2021-11-25 17:49:46,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:49:46,986 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 16, 13, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:49:47,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 17:49:47,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 17:49:47,206 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:49:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:49:47,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1335215982, now seen corresponding path program 1 times [2021-11-25 17:49:47,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:49:47,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438919394] [2021-11-25 17:49:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:47,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:49:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 1304 trivial. 0 not checked. [2021-11-25 17:49:48,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:48,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438919394] [2021-11-25 17:49:48,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438919394] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:49:48,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759619158] [2021-11-25 17:49:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:49:48,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:49:48,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:49:48,339 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:49:48,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 17:49:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:49,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 7135 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 17:49:49,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:49:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 733 proven. 0 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-11-25 17:49:50,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:49:50,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759619158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:49:50,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:49:50,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-11-25 17:49:50,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802141511] [2021-11-25 17:49:50,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:49:50,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 17:49:50,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:49:50,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 17:49:50,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-25 17:49:50,782 INFO L87 Difference]: Start difference. First operand 4205 states and 6147 transitions. Second operand has 6 states, 5 states have (on average 43.4) internal successors, (217), 6 states have internal predecessors, (217), 4 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (110), 3 states have call predecessors, (110), 4 states have call successors, (110) [2021-11-25 17:49:52,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:56,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:58,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:49:59,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:02,302 INFO L93 Difference]: Finished difference Result 6739 states and 9888 transitions. [2021-11-25 17:50:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:50:02,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 43.4) internal successors, (217), 6 states have internal predecessors, (217), 4 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (110), 3 states have call predecessors, (110), 4 states have call successors, (110) Word has length 575 [2021-11-25 17:50:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:02,341 INFO L225 Difference]: With dead ends: 6739 [2021-11-25 17:50:02,341 INFO L226 Difference]: Without dead ends: 4205 [2021-11-25 17:50:02,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:50:02,357 INFO L933 BasicCegarLoop]: 1971 mSDtfsCounter, 11 mSDsluCounter, 8527 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 9831 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:02,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 9831 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2021-11-25 17:50:02,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2021-11-25 17:50:02,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 4205. [2021-11-25 17:50:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 2172 states have (on average 1.2136279926335174) internal successors, (2636), 2263 states have internal predecessors, (2636), 1743 states have call successors, (1743), 287 states have call predecessors, (1743), 289 states have return successors, (1766), 1702 states have call predecessors, (1766), 1743 states have call successors, (1766) [2021-11-25 17:50:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 6145 transitions. [2021-11-25 17:50:02,688 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 6145 transitions. Word has length 575 [2021-11-25 17:50:02,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:02,690 INFO L470 AbstractCegarLoop]: Abstraction has 4205 states and 6145 transitions. [2021-11-25 17:50:02,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 43.4) internal successors, (217), 6 states have internal predecessors, (217), 4 states have call successors, (113), 2 states have call predecessors, (113), 4 states have return successors, (110), 3 states have call predecessors, (110), 4 states have call successors, (110) [2021-11-25 17:50:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 6145 transitions. [2021-11-25 17:50:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2021-11-25 17:50:02,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:02,745 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 16, 13, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:02,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 17:50:02,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 17:50:02,962 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:50:02,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:02,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1275650287, now seen corresponding path program 1 times [2021-11-25 17:50:02,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:02,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5613536] [2021-11-25 17:50:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:02,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 22 proven. 36 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-11-25 17:50:04,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:04,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5613536] [2021-11-25 17:50:04,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5613536] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:50:04,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020128736] [2021-11-25 17:50:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:04,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:04,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:04,166 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:50:04,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 17:50:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:05,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 7152 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 17:50:05,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:50:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 786 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-11-25 17:50:06,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:50:06,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020128736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:06,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:50:06,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 22 [2021-11-25 17:50:06,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750884332] [2021-11-25 17:50:06,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:06,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 17:50:06,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:06,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 17:50:06,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2021-11-25 17:50:06,637 INFO L87 Difference]: Start difference. First operand 4205 states and 6145 transitions. Second operand has 14 states, 11 states have (on average 20.90909090909091) internal successors, (230), 12 states have internal predecessors, (230), 6 states have call successors, (116), 2 states have call predecessors, (116), 5 states have return successors, (113), 7 states have call predecessors, (113), 6 states have call successors, (113) [2021-11-25 17:50:17,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:18,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:20,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:21,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:23,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:24,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:27,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:30,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:33,891 INFO L93 Difference]: Finished difference Result 8824 states and 12931 transitions. [2021-11-25 17:50:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 17:50:33,892 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 20.90909090909091) internal successors, (230), 12 states have internal predecessors, (230), 6 states have call successors, (116), 2 states have call predecessors, (116), 5 states have return successors, (113), 7 states have call predecessors, (113), 6 states have call successors, (113) Word has length 581 [2021-11-25 17:50:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:33,912 INFO L225 Difference]: With dead ends: 8824 [2021-11-25 17:50:33,912 INFO L226 Difference]: Without dead ends: 4629 [2021-11-25 17:50:33,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 17:50:33,927 INFO L933 BasicCegarLoop]: 2075 mSDtfsCounter, 112 mSDsluCounter, 26624 mSDsCounter, 0 mSdLazyCounter, 2737 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 26717 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:33,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 26717 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2737 Invalid, 0 Unknown, 0 Unchecked, 26.8s Time] [2021-11-25 17:50:33,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2021-11-25 17:50:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 4223. [2021-11-25 17:50:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4223 states, 2182 states have (on average 1.2126489459211733) internal successors, (2646), 2275 states have internal predecessors, (2646), 1751 states have call successors, (1751), 287 states have call predecessors, (1751), 289 states have return successors, (1778), 1708 states have call predecessors, (1778), 1751 states have call successors, (1778) [2021-11-25 17:50:34,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 6175 transitions. [2021-11-25 17:50:34,308 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 6175 transitions. Word has length 581 [2021-11-25 17:50:34,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:34,309 INFO L470 AbstractCegarLoop]: Abstraction has 4223 states and 6175 transitions. [2021-11-25 17:50:34,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 20.90909090909091) internal successors, (230), 12 states have internal predecessors, (230), 6 states have call successors, (116), 2 states have call predecessors, (116), 5 states have return successors, (113), 7 states have call predecessors, (113), 6 states have call successors, (113) [2021-11-25 17:50:34,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 6175 transitions. [2021-11-25 17:50:34,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2021-11-25 17:50:34,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:34,339 INFO L514 BasicCegarLoop]: trace histogram [52, 19, 19, 15, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:34,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 17:50:34,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:34,566 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:50:34,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:34,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1346128964, now seen corresponding path program 1 times [2021-11-25 17:50:34,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:34,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262544991] [2021-11-25 17:50:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:34,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4108 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 4077 trivial. 0 not checked. [2021-11-25 17:50:35,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:35,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262544991] [2021-11-25 17:50:35,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262544991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:50:35,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712500510] [2021-11-25 17:50:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:35,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:35,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:35,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:50:35,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 17:50:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:37,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 7418 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 17:50:37,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:50:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4108 backedges. 1022 proven. 0 refuted. 0 times theorem prover too weak. 3086 trivial. 0 not checked. [2021-11-25 17:50:38,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:50:38,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712500510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:38,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:50:38,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2021-11-25 17:50:38,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115848932] [2021-11-25 17:50:38,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:38,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:50:38,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:38,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:50:38,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:50:38,164 INFO L87 Difference]: Start difference. First operand 4223 states and 6175 transitions. Second operand has 7 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (114), 4 states have call predecessors, (114), 3 states have call successors, (114) [2021-11-25 17:50:41,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:44,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:45,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:48,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:48,210 INFO L93 Difference]: Finished difference Result 6939 states and 10203 transitions. [2021-11-25 17:50:48,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:50:48,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (114), 4 states have call predecessors, (114), 3 states have call successors, (114) Word has length 741 [2021-11-25 17:50:48,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:48,237 INFO L225 Difference]: With dead ends: 6939 [2021-11-25 17:50:48,237 INFO L226 Difference]: Without dead ends: 4389 [2021-11-25 17:50:48,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:50:48,251 INFO L933 BasicCegarLoop]: 2064 mSDtfsCounter, 39 mSDsluCounter, 11027 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 12262 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:48,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 12262 Invalid, 1210 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2021-11-25 17:50:48,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2021-11-25 17:50:48,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 4235. [2021-11-25 17:50:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 2190 states have (on average 1.2118721461187214) internal successors, (2654), 2283 states have internal predecessors, (2654), 1753 states have call successors, (1753), 287 states have call predecessors, (1753), 291 states have return successors, (1786), 1712 states have call predecessors, (1786), 1753 states have call successors, (1786) [2021-11-25 17:50:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 6193 transitions. [2021-11-25 17:50:48,584 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 6193 transitions. Word has length 741 [2021-11-25 17:50:48,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:48,585 INFO L470 AbstractCegarLoop]: Abstraction has 4235 states and 6193 transitions. [2021-11-25 17:50:48,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (114), 4 states have call predecessors, (114), 3 states have call successors, (114) [2021-11-25 17:50:48,586 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 6193 transitions. [2021-11-25 17:50:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2021-11-25 17:50:48,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:48,614 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 16, 15, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:50:48,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 17:50:48,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:48,832 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:50:48,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:48,833 INFO L85 PathProgramCache]: Analyzing trace with hash -157298232, now seen corresponding path program 1 times [2021-11-25 17:50:48,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:48,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924678692] [2021-11-25 17:50:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:48,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2021-11-25 17:50:49,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:49,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924678692] [2021-11-25 17:50:49,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924678692] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:50:49,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030103384] [2021-11-25 17:50:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:49,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:50:49,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:49,622 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:50:49,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db05af1-405c-4727-8202-98ab6ae6d09e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 17:50:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:51,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 7128 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 17:50:51,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:51:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 583 proven. 4 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2021-11-25 17:51:21,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:51:23,886 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 8191 disjunctions. This might take some time... [2021-11-25 17:51:28,490 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 8191 disjunctions. [2021-11-25 17:51:28,594 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 16383 disjunctions. This might take some time... [2021-11-25 17:51:51,594 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 16383 disjunctions. [2021-11-25 17:51:51,742 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 32767 disjunctions. This might take some time... [2021-11-25 17:53:28,796 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 32767 disjunctions.