./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.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_b7e71d0f-7a92-46f7-bd37-0bb94611524e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/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_b7e71d0f-7a92-46f7-bd37-0bb94611524e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/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_b7e71d0f-7a92-46f7-bd37-0bb94611524e/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 b087d00fa9bd90976fef9b627e09b5ad5b9a94f81c1bccd132a9fa7492421f28 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:58:42,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:58:42,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:58:42,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:58:42,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:58:42,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:58:42,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:58:42,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:58:42,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:58:42,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:58:42,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:58:42,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:58:42,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:58:42,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:58:42,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:58:42,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:58:42,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:58:42,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:58:42,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:58:42,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:58:42,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:58:42,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:58:42,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:58:42,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:58:42,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:58:42,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:58:42,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:58:42,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:58:42,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:58:42,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:58:42,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:58:42,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:58:42,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:58:42,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:58:42,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:58:42,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:58:42,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:58:42,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:58:42,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:58:42,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:58:42,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:58:42,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:58:42,927 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:58:42,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:58:42,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:58:42,928 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:58:42,929 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:58:42,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:58:42,929 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:58:42,929 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:58:42,930 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:58:42,930 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:58:42,930 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:58:42,930 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:58:42,930 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:58:42,930 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:58:42,931 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:58:42,931 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:58:42,931 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:58:42,931 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:58:42,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:58:42,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:58:42,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:58:42,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:58:42,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:58:42,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:58:42,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:58:42,933 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:58:42,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:58:42,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:58:42,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:58:42,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:58:42,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:58:42,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:58:42,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:58:42,935 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:58:42,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:58:42,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:58:42,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:58:42,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:58:42,936 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_b7e71d0f-7a92-46f7-bd37-0bb94611524e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b087d00fa9bd90976fef9b627e09b5ad5b9a94f81c1bccd132a9fa7492421f28 [2021-11-25 18:58:43,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:58:43,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:58:43,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:58:43,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:58:43,217 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:58:43,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i [2021-11-25 18:58:43,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/bin/utaipan-eEHZpOm5b7/data/0f71ee557/7c51310bda304404a170afca6d19b5ce/FLAG1c8f031fb [2021-11-25 18:58:44,204 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:58:44,206 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i [2021-11-25 18:58:44,267 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/bin/utaipan-eEHZpOm5b7/data/0f71ee557/7c51310bda304404a170afca6d19b5ce/FLAG1c8f031fb [2021-11-25 18:58:44,597 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/bin/utaipan-eEHZpOm5b7/data/0f71ee557/7c51310bda304404a170afca6d19b5ce [2021-11-25 18:58:44,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:58:44,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:58:44,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:58:44,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:58:44,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:58:44,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:58:44" (1/1) ... [2021-11-25 18:58:44,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120a3906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:44, skipping insertion in model container [2021-11-25 18:58:44,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:58:44" (1/1) ... [2021-11-25 18:58:44,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:58:44,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:58:47,582 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_b7e71d0f-7a92-46f7-bd37-0bb94611524e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i[357318,357331] [2021-11-25 18:58:47,584 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_b7e71d0f-7a92-46f7-bd37-0bb94611524e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i[357463,357476] [2021-11-25 18:58:47,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:58:47,629 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:58:48,045 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_b7e71d0f-7a92-46f7-bd37-0bb94611524e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i[357318,357331] [2021-11-25 18:58:48,047 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_b7e71d0f-7a92-46f7-bd37-0bb94611524e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i[357463,357476] [2021-11-25 18:58:48,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:58:48,244 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:58:48,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:48 WrapperNode [2021-11-25 18:58:48,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:58:48,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:58:48,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:58:48,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:58:48,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:48" (1/1) ... [2021-11-25 18:58:48,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:48" (1/1) ... [2021-11-25 18:58:48,597 INFO L137 Inliner]: procedures = 421, calls = 1839, calls flagged for inlining = 205, calls inlined = 179, statements flattened = 4228 [2021-11-25 18:58:48,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:58:48,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:58:48,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:58:48,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:58:48,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:48" (1/1) ... [2021-11-25 18:58:48,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:48" (1/1) ... [2021-11-25 18:58:48,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:48" (1/1) ... [2021-11-25 18:58:48,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:48" (1/1) ... [2021-11-25 18:58:48,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:48" (1/1) ... [2021-11-25 18:58:48,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:48" (1/1) ... [2021-11-25 18:58:48,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:48" (1/1) ... [2021-11-25 18:58:48,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:58:48,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:58:48,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:58:48,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:58:48,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:48" (1/1) ... [2021-11-25 18:58:48,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:58:48,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:58:48,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:58:48,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7e71d0f-7a92-46f7-bd37-0bb94611524e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:58:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure build_crc [2021-11-25 18:58:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure build_crc [2021-11-25 18:58:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_set_multicast_list [2021-11-25 18:58:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_set_multicast_list [2021-11-25 18:58:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:58:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:58:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2021-11-25 18:58:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2021-11-25 18:58:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:58:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:58:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_lock_irqsave [2021-11-25 18:58:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_lock_irqsave [2021-11-25 18:58:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-25 18:58:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-25 18:58:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:58:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:58:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure free_orinocodev [2021-11-25 18:58:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure free_orinocodev [2021-11-25 18:58:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:58:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:58:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:58:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:58:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:58:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:58:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_8051_cpucs [2021-11-25 18:58:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_8051_cpucs [2021-11-25 18:58:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:58:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 18:58:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 18:58:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_unlock [2021-11-25 18:58:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_unlock [2021-11-25 18:58:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_open [2021-11-25 18:58:49,004 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_open [2021-11-25 18:58:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:58:49,004 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:58:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-25 18:58:49,004 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-25 18:58:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_unlock_irqrestore [2021-11-25 18:58:49,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_unlock_irqrestore [2021-11-25 18:58:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:58:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_disconnect [2021-11-25 18:58:49,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_disconnect [2021-11-25 18:58:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 18:58:49,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 18:58:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:58:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:58:49,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:58:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:58:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-25 18:58:49,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-25 18:58:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:58:49,006 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:58:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_init [2021-11-25 18:58:49,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_init [2021-11-25 18:58:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:58:49,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:58:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-25 18:58:49,007 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-25 18:58:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 18:58:49,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 18:58:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_hard_reset [2021-11-25 18:58:49,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_hard_reset [2021-11-25 18:58:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 18:58:49,008 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 18:58:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:58:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-25 18:58:49,008 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-25 18:58:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:58:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:58:49,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:58:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:58:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:58:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:58:49,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:58:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-25 18:58:49,009 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-25 18:58:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-25 18:58:49,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-25 18:58:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_request_context_put [2021-11-25 18:58:49,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_request_context_put [2021-11-25 18:58:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-25 18:58:49,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-25 18:58:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-25 18:58:49,011 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-25 18:58:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_submit_in_urb [2021-11-25 18:58:49,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_submit_in_urb [2021-11-25 18:58:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 18:58:49,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 18:58:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:58:49,011 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:58:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_lock_irq [2021-11-25 18:58:49,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_lock_irq [2021-11-25 18:58:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:58:49,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:58:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure ndev_priv [2021-11-25 18:58:49,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ndev_priv [2021-11-25 18:58:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-25 18:58:49,012 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-25 18:58:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:58:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:58:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:58:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:58:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-25 18:58:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-25 18:58:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_unlock_irq [2021-11-25 18:58:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_unlock_irq [2021-11-25 18:58:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:58:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:58:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:58:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-11-25 18:58:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-11-25 18:58:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:58:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-25 18:58:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-25 18:58:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_121 [2021-11-25 18:58:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_121 [2021-11-25 18:58:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:58:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_tx_timeout [2021-11-25 18:58:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_tx_timeout [2021-11-25 18:58:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_program_end [2021-11-25 18:58:49,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_program_end [2021-11-25 18:58:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-25 18:58:49,015 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-25 18:58:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:58:49,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:58:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 18:58:49,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 18:58:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_orinoco_driver_exit_10_2 [2021-11-25 18:58:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_orinoco_driver_exit_10_2 [2021-11-25 18:58:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_stop [2021-11-25 18:58:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_stop [2021-11-25 18:58:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_access_ltv [2021-11-25 18:58:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_access_ltv [2021-11-25 18:58:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 18:58:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 18:58:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_write_ltv [2021-11-25 18:58:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_write_ltv [2021-11-25 18:58:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_mod_timer [2021-11-25 18:58:49,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_mod_timer [2021-11-25 18:58:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:58:49,017 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:58:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-25 18:58:49,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-25 18:58:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 18:58:49,017 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 18:58:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_req_queue_run [2021-11-25 18:58:49,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_req_queue_run [2021-11-25 18:58:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:58:49,017 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:58:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_122 [2021-11-25 18:58:49,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_122 [2021-11-25 18:58:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_ctx_complete [2021-11-25 18:58:49,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_ctx_complete [2021-11-25 18:58:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_delete [2021-11-25 18:58:49,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_delete [2021-11-25 18:58:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:58:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_alloc_ctx [2021-11-25 18:58:49,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_alloc_ctx [2021-11-25 18:58:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:58:49,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:58:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 18:58:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 18:58:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_reply_inc [2021-11-25 18:58:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_reply_inc [2021-11-25 18:58:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_req_lock_of_ezusb_priv [2021-11-25 18:58:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_req_lock_of_ezusb_priv [2021-11-25 18:58:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_docmd_wait [2021-11-25 18:58:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_docmd_wait [2021-11-25 18:58:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:58:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:58:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2021-11-25 18:58:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2021-11-25 18:58:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:58:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-25 18:58:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-25 18:58:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_complete_all [2021-11-25 18:58:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_complete_all [2021-11-25 18:58:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:58:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:58:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-25 18:58:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-25 18:58:49,733 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:58:49,736 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:58:50,099 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:58:52,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:58:52,678 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:58:53,403 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:58:53,403 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:58:53,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:58:53 BoogieIcfgContainer [2021-11-25 18:58:53,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:58:53,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:58:53,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:58:53,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:58:53,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:58:44" (1/3) ... [2021-11-25 18:58:53,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c479c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:58:53, skipping insertion in model container [2021-11-25 18:58:53,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:58:48" (2/3) ... [2021-11-25 18:58:53,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c479c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:58:53, skipping insertion in model container [2021-11-25 18:58:53,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:58:53" (3/3) ... [2021-11-25 18:58:53,416 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i [2021-11-25 18:58:53,421 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:58:53,421 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:58:53,476 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:58:53,482 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 18:58:53,483 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:58:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 1087 states, 647 states have (on average 1.3415765069551777) internal successors, (868), 660 states have internal predecessors, (868), 358 states have call successors, (358), 82 states have call predecessors, (358), 81 states have return successors, (351), 347 states have call predecessors, (351), 351 states have call successors, (351) [2021-11-25 18:58:53,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-25 18:58:53,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:53,555 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:53,555 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:58:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:53,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1855026837, now seen corresponding path program 1 times [2021-11-25 18:58:53,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:53,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963947858] [2021-11-25 18:58:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:53,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-25 18:58:54,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:54,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963947858] [2021-11-25 18:58:54,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963947858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:54,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:54,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:58:54,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189636143] [2021-11-25 18:58:54,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:54,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:54,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:54,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:54,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:54,532 INFO L87 Difference]: Start difference. First operand has 1087 states, 647 states have (on average 1.3415765069551777) internal successors, (868), 660 states have internal predecessors, (868), 358 states have call successors, (358), 82 states have call predecessors, (358), 81 states have return successors, (351), 347 states have call predecessors, (351), 351 states have call successors, (351) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:58:56,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:56,236 INFO L93 Difference]: Finished difference Result 3021 states and 4455 transitions. [2021-11-25 18:58:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:56,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 179 [2021-11-25 18:58:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:56,268 INFO L225 Difference]: With dead ends: 3021 [2021-11-25 18:58:56,268 INFO L226 Difference]: Without dead ends: 1900 [2021-11-25 18:58:56,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:56,287 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 1252 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:56,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 2974 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:58:56,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2021-11-25 18:58:56,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1896. [2021-11-25 18:58:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1150 states have (on average 1.3269565217391304) internal successors, (1526), 1176 states have internal predecessors, (1526), 589 states have call successors, (589), 156 states have call predecessors, (589), 156 states have return successors, (589), 579 states have call predecessors, (589), 589 states have call successors, (589) [2021-11-25 18:58:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2704 transitions. [2021-11-25 18:58:56,482 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2704 transitions. Word has length 179 [2021-11-25 18:58:56,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:56,484 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 2704 transitions. [2021-11-25 18:58:56,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:58:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2704 transitions. [2021-11-25 18:58:56,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-25 18:58:56,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:56,492 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:56,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:58:56,492 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:58:56,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:56,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1544071272, now seen corresponding path program 1 times [2021-11-25 18:58:56,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:56,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245811988] [2021-11-25 18:58:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:56,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-25 18:58:56,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:56,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245811988] [2021-11-25 18:58:56,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245811988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:56,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:56,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:58:56,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142521236] [2021-11-25 18:58:56,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:56,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:56,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:56,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:56,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:56,836 INFO L87 Difference]: Start difference. First operand 1896 states and 2704 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:58:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:58,359 INFO L93 Difference]: Finished difference Result 5065 states and 7211 transitions. [2021-11-25 18:58:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:58,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 186 [2021-11-25 18:58:58,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:58,387 INFO L225 Difference]: With dead ends: 5065 [2021-11-25 18:58:58,388 INFO L226 Difference]: Without dead ends: 3200 [2021-11-25 18:58:58,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:58,399 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 1075 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:58,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 2959 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:58:58,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2021-11-25 18:58:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3194. [2021-11-25 18:58:58,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 1947 states have (on average 1.3271700051361068) internal successors, (2584), 1997 states have internal predecessors, (2584), 971 states have call successors, (971), 275 states have call predecessors, (971), 275 states have return successors, (971), 947 states have call predecessors, (971), 971 states have call successors, (971) [2021-11-25 18:58:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4526 transitions. [2021-11-25 18:58:58,583 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4526 transitions. Word has length 186 [2021-11-25 18:58:58,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:58,584 INFO L470 AbstractCegarLoop]: Abstraction has 3194 states and 4526 transitions. [2021-11-25 18:58:58,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:58:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4526 transitions. [2021-11-25 18:58:58,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-25 18:58:58,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:58,596 INFO L514 BasicCegarLoop]: trace histogram [17, 15, 15, 15, 15, 15, 15, 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] [2021-11-25 18:58:58,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:58:58,597 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:58:58,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:58,598 INFO L85 PathProgramCache]: Analyzing trace with hash 65689459, now seen corresponding path program 1 times [2021-11-25 18:58:58,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:58,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168237399] [2021-11-25 18:58:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:58,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2021-11-25 18:58:58,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:58,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168237399] [2021-11-25 18:58:58,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168237399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:58,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:58,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:58:58,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270373254] [2021-11-25 18:58:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:58,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:58,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:58,850 INFO L87 Difference]: Start difference. First operand 3194 states and 4526 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-25 18:59:00,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:00,176 INFO L93 Difference]: Finished difference Result 7702 states and 10868 transitions. [2021-11-25 18:59:00,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:00,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 196 [2021-11-25 18:59:00,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:00,212 INFO L225 Difference]: With dead ends: 7702 [2021-11-25 18:59:00,212 INFO L226 Difference]: Without dead ends: 4539 [2021-11-25 18:59:00,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:00,229 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 1168 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:00,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 2754 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:59:00,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2021-11-25 18:59:00,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 4537. [2021-11-25 18:59:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 2767 states have (on average 1.321647994217564) internal successors, (3657), 2840 states have internal predecessors, (3657), 1359 states have call successors, (1359), 410 states have call predecessors, (1359), 410 states have return successors, (1359), 1325 states have call predecessors, (1359), 1359 states have call successors, (1359) [2021-11-25 18:59:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6375 transitions. [2021-11-25 18:59:00,487 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6375 transitions. Word has length 196 [2021-11-25 18:59:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:00,488 INFO L470 AbstractCegarLoop]: Abstraction has 4537 states and 6375 transitions. [2021-11-25 18:59:00,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-25 18:59:00,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6375 transitions. [2021-11-25 18:59:00,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-25 18:59:00,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:00,493 INFO L514 BasicCegarLoop]: trace histogram [17, 15, 15, 15, 15, 15, 15, 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] [2021-11-25 18:59:00,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:59:00,494 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:00,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:00,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1265916073, now seen corresponding path program 1 times [2021-11-25 18:59:00,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:00,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866598181] [2021-11-25 18:59:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:00,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2021-11-25 18:59:00,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:00,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866598181] [2021-11-25 18:59:00,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866598181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:00,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:00,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:00,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578482826] [2021-11-25 18:59:00,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:00,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:00,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:00,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:00,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:00,762 INFO L87 Difference]: Start difference. First operand 4537 states and 6375 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-25 18:59:02,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:02,334 INFO L93 Difference]: Finished difference Result 9531 states and 13376 transitions. [2021-11-25 18:59:02,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:02,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 204 [2021-11-25 18:59:02,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:02,380 INFO L225 Difference]: With dead ends: 9531 [2021-11-25 18:59:02,381 INFO L226 Difference]: Without dead ends: 5025 [2021-11-25 18:59:02,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:02,411 INFO L933 BasicCegarLoop]: 1942 mSDtfsCounter, 1070 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:02,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 3205 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:59:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2021-11-25 18:59:02,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 5021. [2021-11-25 18:59:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 3072 states have (on average 1.3216145833333333) internal successors, (4060), 3153 states have internal predecessors, (4060), 1489 states have call successors, (1489), 459 states have call predecessors, (1489), 459 states have return successors, (1489), 1449 states have call predecessors, (1489), 1489 states have call successors, (1489) [2021-11-25 18:59:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 7038 transitions. [2021-11-25 18:59:02,727 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 7038 transitions. Word has length 204 [2021-11-25 18:59:02,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:02,728 INFO L470 AbstractCegarLoop]: Abstraction has 5021 states and 7038 transitions. [2021-11-25 18:59:02,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-25 18:59:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 7038 transitions. [2021-11-25 18:59:02,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-25 18:59:02,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:02,736 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:59:02,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:59:02,736 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:02,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash 465227741, now seen corresponding path program 1 times [2021-11-25 18:59:02,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:02,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087606828] [2021-11-25 18:59:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:02,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2021-11-25 18:59:02,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:02,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087606828] [2021-11-25 18:59:02,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087606828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:02,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:02,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:02,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149477156] [2021-11-25 18:59:02,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:02,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:02,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:02,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:02,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:02,951 INFO L87 Difference]: Start difference. First operand 5021 states and 7038 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-25 18:59:04,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:04,287 INFO L93 Difference]: Finished difference Result 12687 states and 17795 transitions. [2021-11-25 18:59:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:04,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 239 [2021-11-25 18:59:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:04,352 INFO L225 Difference]: With dead ends: 12687 [2021-11-25 18:59:04,352 INFO L226 Difference]: Without dead ends: 7697 [2021-11-25 18:59:04,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:04,376 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1283 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:04,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 2809 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:59:04,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7697 states. [2021-11-25 18:59:04,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7697 to 7683. [2021-11-25 18:59:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7683 states, 4716 states have (on average 1.3127650551314674) internal successors, (6191), 4846 states have internal predecessors, (6191), 2282 states have call successors, (2282), 684 states have call predecessors, (2282), 684 states have return successors, (2282), 2210 states have call predecessors, (2282), 2282 states have call successors, (2282) [2021-11-25 18:59:04,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7683 states to 7683 states and 10755 transitions. [2021-11-25 18:59:04,772 INFO L78 Accepts]: Start accepts. Automaton has 7683 states and 10755 transitions. Word has length 239 [2021-11-25 18:59:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:04,772 INFO L470 AbstractCegarLoop]: Abstraction has 7683 states and 10755 transitions. [2021-11-25 18:59:04,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-25 18:59:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand 7683 states and 10755 transitions. [2021-11-25 18:59:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-25 18:59:04,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:04,780 INFO L514 BasicCegarLoop]: trace histogram [20, 15, 15, 15, 15, 15, 15, 4, 4, 3, 3, 3, 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] [2021-11-25 18:59:04,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:59:04,780 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:04,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:04,781 INFO L85 PathProgramCache]: Analyzing trace with hash 694550174, now seen corresponding path program 1 times [2021-11-25 18:59:04,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:04,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395099730] [2021-11-25 18:59:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:04,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1037 trivial. 0 not checked. [2021-11-25 18:59:05,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:05,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395099730] [2021-11-25 18:59:05,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395099730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:05,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:05,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:05,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248241474] [2021-11-25 18:59:05,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:05,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:05,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:05,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:05,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:05,075 INFO L87 Difference]: Start difference. First operand 7683 states and 10755 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 18:59:06,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:06,784 INFO L93 Difference]: Finished difference Result 18123 states and 25340 transitions. [2021-11-25 18:59:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:06,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 240 [2021-11-25 18:59:06,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:06,874 INFO L225 Difference]: With dead ends: 18123 [2021-11-25 18:59:06,875 INFO L226 Difference]: Without dead ends: 10515 [2021-11-25 18:59:06,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:06,917 INFO L933 BasicCegarLoop]: 2264 mSDtfsCounter, 1190 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:06,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1190 Valid, 3482 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:59:06,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2021-11-25 18:59:07,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 10501. [2021-11-25 18:59:07,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10501 states, 6440 states have (on average 1.310248447204969) internal successors, (8438), 6634 states have internal predecessors, (8438), 3103 states have call successors, (3103), 957 states have call predecessors, (3103), 957 states have return successors, (3103), 2992 states have call predecessors, (3103), 3103 states have call successors, (3103) [2021-11-25 18:59:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10501 states to 10501 states and 14644 transitions. [2021-11-25 18:59:07,453 INFO L78 Accepts]: Start accepts. Automaton has 10501 states and 14644 transitions. Word has length 240 [2021-11-25 18:59:07,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:07,453 INFO L470 AbstractCegarLoop]: Abstraction has 10501 states and 14644 transitions. [2021-11-25 18:59:07,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 18:59:07,454 INFO L276 IsEmpty]: Start isEmpty. Operand 10501 states and 14644 transitions. [2021-11-25 18:59:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-25 18:59:07,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:07,465 INFO L514 BasicCegarLoop]: trace histogram [20, 15, 15, 15, 15, 15, 15, 5, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:07,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:59:07,465 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:07,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2139934352, now seen corresponding path program 1 times [2021-11-25 18:59:07,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:07,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743109976] [2021-11-25 18:59:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:07,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1043 trivial. 0 not checked. [2021-11-25 18:59:07,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:07,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743109976] [2021-11-25 18:59:07,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743109976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:07,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:07,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:07,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289756098] [2021-11-25 18:59:07,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:07,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:07,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:07,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:07,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:07,730 INFO L87 Difference]: Start difference. First operand 10501 states and 14644 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-25 18:59:09,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:09,775 INFO L93 Difference]: Finished difference Result 24989 states and 34821 transitions. [2021-11-25 18:59:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:09,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 253 [2021-11-25 18:59:09,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:09,861 INFO L225 Difference]: With dead ends: 24989 [2021-11-25 18:59:09,861 INFO L226 Difference]: Without dead ends: 14563 [2021-11-25 18:59:09,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:09,905 INFO L933 BasicCegarLoop]: 2155 mSDtfsCounter, 1338 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:09,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1338 Valid, 3274 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:59:09,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14563 states. [2021-11-25 18:59:10,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14563 to 14549. [2021-11-25 18:59:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14549 states, 8865 states have (on average 1.3037789058093627) internal successors, (11558), 9145 states have internal predecessors, (11558), 4318 states have call successors, (4318), 1365 states have call predecessors, (4318), 1365 states have return successors, (4318), 4160 states have call predecessors, (4318), 4318 states have call successors, (4318) [2021-11-25 18:59:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14549 states to 14549 states and 20194 transitions. [2021-11-25 18:59:10,858 INFO L78 Accepts]: Start accepts. Automaton has 14549 states and 20194 transitions. Word has length 253 [2021-11-25 18:59:10,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:10,859 INFO L470 AbstractCegarLoop]: Abstraction has 14549 states and 20194 transitions. [2021-11-25 18:59:10,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-25 18:59:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 14549 states and 20194 transitions. [2021-11-25 18:59:10,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-25 18:59:10,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:10,869 INFO L514 BasicCegarLoop]: trace histogram [22, 15, 15, 15, 15, 15, 15, 4, 4, 4, 4, 4, 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] [2021-11-25 18:59:10,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:59:10,869 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:10,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:10,870 INFO L85 PathProgramCache]: Analyzing trace with hash 598747403, now seen corresponding path program 1 times [2021-11-25 18:59:10,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:10,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725159070] [2021-11-25 18:59:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:10,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2021-11-25 18:59:11,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:11,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725159070] [2021-11-25 18:59:11,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725159070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:11,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:11,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:59:11,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771448087] [2021-11-25 18:59:11,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:11,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:59:11,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:11,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:59:11,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:59:11,101 INFO L87 Difference]: Start difference. First operand 14549 states and 20194 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-25 18:59:14,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:14,242 INFO L93 Difference]: Finished difference Result 33217 states and 46026 transitions. [2021-11-25 18:59:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:59:14,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 256 [2021-11-25 18:59:14,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:14,334 INFO L225 Difference]: With dead ends: 33217 [2021-11-25 18:59:14,334 INFO L226 Difference]: Without dead ends: 18743 [2021-11-25 18:59:14,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:59:14,490 INFO L933 BasicCegarLoop]: 2264 mSDtfsCounter, 1279 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 3944 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:14,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 3944 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 18:59:14,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18743 states. [2021-11-25 18:59:15,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18743 to 18725. [2021-11-25 18:59:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18725 states, 11396 states have (on average 1.3003685503685503) internal successors, (14819), 11770 states have internal predecessors, (14819), 5526 states have call successors, (5526), 1802 states have call predecessors, (5526), 1802 states have return successors, (5526), 5312 states have call predecessors, (5526), 5526 states have call successors, (5526) [2021-11-25 18:59:15,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18725 states to 18725 states and 25871 transitions. [2021-11-25 18:59:15,413 INFO L78 Accepts]: Start accepts. Automaton has 18725 states and 25871 transitions. Word has length 256 [2021-11-25 18:59:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:15,415 INFO L470 AbstractCegarLoop]: Abstraction has 18725 states and 25871 transitions. [2021-11-25 18:59:15,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-25 18:59:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 18725 states and 25871 transitions. [2021-11-25 18:59:15,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-25 18:59:15,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:15,435 INFO L514 BasicCegarLoop]: trace histogram [24, 15, 15, 15, 15, 15, 15, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 18:59:15,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:59:15,436 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:15,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1445339356, now seen corresponding path program 1 times [2021-11-25 18:59:15,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:15,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227458181] [2021-11-25 18:59:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:15,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2021-11-25 18:59:15,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:15,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227458181] [2021-11-25 18:59:15,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227458181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:15,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:15,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:59:15,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591406877] [2021-11-25 18:59:15,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:15,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:59:15,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:15,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:59:15,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:59:15,717 INFO L87 Difference]: Start difference. First operand 18725 states and 25871 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 18:59:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:18,962 INFO L93 Difference]: Finished difference Result 47209 states and 66296 transitions. [2021-11-25 18:59:18,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:59:18,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 293 [2021-11-25 18:59:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:19,102 INFO L225 Difference]: With dead ends: 47209 [2021-11-25 18:59:19,102 INFO L226 Difference]: Without dead ends: 28559 [2021-11-25 18:59:19,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:19,151 INFO L933 BasicCegarLoop]: 2437 mSDtfsCounter, 1790 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 6175 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:19,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 6175 Invalid, 1513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [183 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:59:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28559 states. [2021-11-25 18:59:20,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28559 to 22781. [2021-11-25 18:59:20,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22781 states, 13859 states have (on average 1.2990836279673859) internal successors, (18004), 14327 states have internal predecessors, (18004), 6710 states have call successors, (6710), 2211 states have call predecessors, (6710), 2211 states have return successors, (6710), 6440 states have call predecessors, (6710), 6710 states have call successors, (6710) [2021-11-25 18:59:20,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22781 states to 22781 states and 31424 transitions. [2021-11-25 18:59:20,569 INFO L78 Accepts]: Start accepts. Automaton has 22781 states and 31424 transitions. Word has length 293 [2021-11-25 18:59:20,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:20,570 INFO L470 AbstractCegarLoop]: Abstraction has 22781 states and 31424 transitions. [2021-11-25 18:59:20,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 18:59:20,571 INFO L276 IsEmpty]: Start isEmpty. Operand 22781 states and 31424 transitions. [2021-11-25 18:59:20,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-25 18:59:20,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:20,589 INFO L514 BasicCegarLoop]: trace histogram [24, 15, 15, 15, 15, 15, 15, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 18:59:20,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:59:20,589 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:20,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:20,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2011700145, now seen corresponding path program 1 times [2021-11-25 18:59:20,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:20,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165176667] [2021-11-25 18:59:20,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:20,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2021-11-25 18:59:21,017 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:21,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165176667] [2021-11-25 18:59:21,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165176667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:21,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:21,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:59:21,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092235323] [2021-11-25 18:59:21,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:21,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:59:21,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:21,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:59:21,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:59:21,020 INFO L87 Difference]: Start difference. First operand 22781 states and 31424 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 18:59:24,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:24,242 INFO L93 Difference]: Finished difference Result 55361 states and 77476 transitions. [2021-11-25 18:59:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:59:24,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 294 [2021-11-25 18:59:24,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:24,518 INFO L225 Difference]: With dead ends: 55361 [2021-11-25 18:59:24,518 INFO L226 Difference]: Without dead ends: 32655 [2021-11-25 18:59:24,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:24,577 INFO L933 BasicCegarLoop]: 2423 mSDtfsCounter, 1818 mSDsluCounter, 4355 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 6131 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:24,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1955 Valid, 6131 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:59:24,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32655 states. [2021-11-25 18:59:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32655 to 26877. [2021-11-25 18:59:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26877 states, 16360 states have (on average 1.2977383863080685) internal successors, (21231), 16922 states have internal predecessors, (21231), 7894 states have call successors, (7894), 2622 states have call predecessors, (7894), 2622 states have return successors, (7894), 7568 states have call predecessors, (7894), 7894 states have call successors, (7894) [2021-11-25 18:59:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26877 states to 26877 states and 37019 transitions. [2021-11-25 18:59:25,990 INFO L78 Accepts]: Start accepts. Automaton has 26877 states and 37019 transitions. Word has length 294 [2021-11-25 18:59:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:25,991 INFO L470 AbstractCegarLoop]: Abstraction has 26877 states and 37019 transitions. [2021-11-25 18:59:25,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 18:59:25,991 INFO L276 IsEmpty]: Start isEmpty. Operand 26877 states and 37019 transitions. [2021-11-25 18:59:26,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-25 18:59:26,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:26,010 INFO L514 BasicCegarLoop]: trace histogram [20, 15, 15, 15, 15, 15, 15, 5, 5, 3, 3, 3, 3, 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] [2021-11-25 18:59:26,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:59:26,010 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:26,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:26,011 INFO L85 PathProgramCache]: Analyzing trace with hash 644161652, now seen corresponding path program 1 times [2021-11-25 18:59:26,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:26,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290766864] [2021-11-25 18:59:26,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:26,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2021-11-25 18:59:26,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:26,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290766864] [2021-11-25 18:59:26,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290766864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:26,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:26,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:26,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264906488] [2021-11-25 18:59:26,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:26,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:26,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:26,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:26,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:26,226 INFO L87 Difference]: Start difference. First operand 26877 states and 37019 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-25 18:59:28,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:28,944 INFO L93 Difference]: Finished difference Result 63920 states and 88030 transitions. [2021-11-25 18:59:28,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:28,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 299 [2021-11-25 18:59:28,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:29,105 INFO L225 Difference]: With dead ends: 63920 [2021-11-25 18:59:29,105 INFO L226 Difference]: Without dead ends: 37118 [2021-11-25 18:59:29,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:29,176 INFO L933 BasicCegarLoop]: 2352 mSDtfsCounter, 1283 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:29,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 3595 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:59:29,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37118 states. [2021-11-25 18:59:30,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37118 to 37068. [2021-11-25 18:59:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37068 states, 22564 states have (on average 1.293210423683744) internal successors, (29180), 23372 states have internal predecessors, (29180), 10891 states have call successors, (10891), 3612 states have call predecessors, (10891), 3612 states have return successors, (10891), 10405 states have call predecessors, (10891), 10891 states have call successors, (10891) [2021-11-25 18:59:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37068 states to 37068 states and 50962 transitions. [2021-11-25 18:59:30,754 INFO L78 Accepts]: Start accepts. Automaton has 37068 states and 50962 transitions. Word has length 299 [2021-11-25 18:59:30,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:30,755 INFO L470 AbstractCegarLoop]: Abstraction has 37068 states and 50962 transitions. [2021-11-25 18:59:30,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-25 18:59:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 37068 states and 50962 transitions. [2021-11-25 18:59:30,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-11-25 18:59:30,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:30,777 INFO L514 BasicCegarLoop]: trace histogram [24, 15, 15, 15, 15, 15, 15, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 18:59:30,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:59:30,778 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:30,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:30,779 INFO L85 PathProgramCache]: Analyzing trace with hash -254115647, now seen corresponding path program 1 times [2021-11-25 18:59:30,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:30,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291576337] [2021-11-25 18:59:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:30,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:31,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1257 trivial. 0 not checked. [2021-11-25 18:59:31,251 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:31,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291576337] [2021-11-25 18:59:31,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291576337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:31,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:31,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:31,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100470845] [2021-11-25 18:59:31,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:31,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:31,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:31,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:31,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:31,253 INFO L87 Difference]: Start difference. First operand 37068 states and 50962 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-25 18:59:34,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:34,458 INFO L93 Difference]: Finished difference Result 108696 states and 149472 transitions. [2021-11-25 18:59:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:34,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 295 [2021-11-25 18:59:34,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:34,836 INFO L225 Difference]: With dead ends: 108696 [2021-11-25 18:59:34,836 INFO L226 Difference]: Without dead ends: 71703 [2021-11-25 18:59:35,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:35,004 INFO L933 BasicCegarLoop]: 2148 mSDtfsCounter, 1409 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:35,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 3395 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:59:35,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71703 states. [2021-11-25 18:59:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71703 to 71701. [2021-11-25 18:59:37,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71701 states, 43934 states have (on average 1.2912323029999544) internal successors, (56729), 45316 states have internal predecessors, (56729), 20758 states have call successors, (20758), 7008 states have call predecessors, (20758), 7008 states have return successors, (20758), 20020 states have call predecessors, (20758), 20758 states have call successors, (20758) [2021-11-25 18:59:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71701 states to 71701 states and 98245 transitions. [2021-11-25 18:59:38,239 INFO L78 Accepts]: Start accepts. Automaton has 71701 states and 98245 transitions. Word has length 295 [2021-11-25 18:59:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:38,240 INFO L470 AbstractCegarLoop]: Abstraction has 71701 states and 98245 transitions. [2021-11-25 18:59:38,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-25 18:59:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 71701 states and 98245 transitions. [2021-11-25 18:59:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-25 18:59:38,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:38,264 INFO L514 BasicCegarLoop]: trace histogram [26, 15, 15, 15, 15, 15, 15, 7, 7, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:38,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:59:38,265 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:38,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:38,265 INFO L85 PathProgramCache]: Analyzing trace with hash 866157736, now seen corresponding path program 1 times [2021-11-25 18:59:38,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:38,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59428085] [2021-11-25 18:59:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:38,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-11-25 18:59:39,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:39,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59428085] [2021-11-25 18:59:39,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59428085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:39,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:39,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:59:39,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339539122] [2021-11-25 18:59:39,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:39,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:59:39,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:39,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:59:39,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:59:39,348 INFO L87 Difference]: Start difference. First operand 71701 states and 98245 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 18:59:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:47,636 INFO L93 Difference]: Finished difference Result 119519 states and 164204 transitions. [2021-11-25 18:59:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:59:47,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 316 [2021-11-25 18:59:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:48,152 INFO L225 Difference]: With dead ends: 119519 [2021-11-25 18:59:48,152 INFO L226 Difference]: Without dead ends: 119517 [2021-11-25 18:59:48,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:59:48,200 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 1047 mSDsluCounter, 6302 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 6888 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:48,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 6888 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 18:59:48,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119517 states. [2021-11-25 18:59:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119517 to 118861. [2021-11-25 18:59:54,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118861 states, 73448 states have (on average 1.2813010565297898) internal successors, (94109), 75772 states have internal predecessors, (94109), 33720 states have call successors, (33720), 12060 states have call predecessors, (33720), 11692 states have return successors, (34854), 31928 states have call predecessors, (34854), 33720 states have call successors, (34854) [2021-11-25 18:59:55,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118861 states to 118861 states and 162683 transitions. [2021-11-25 18:59:55,067 INFO L78 Accepts]: Start accepts. Automaton has 118861 states and 162683 transitions. Word has length 316 [2021-11-25 18:59:55,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:55,068 INFO L470 AbstractCegarLoop]: Abstraction has 118861 states and 162683 transitions. [2021-11-25 18:59:55,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 18:59:55,068 INFO L276 IsEmpty]: Start isEmpty. Operand 118861 states and 162683 transitions. [2021-11-25 18:59:55,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-25 18:59:55,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:55,102 INFO L514 BasicCegarLoop]: trace histogram [24, 15, 15, 15, 15, 15, 15, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 18:59:55,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:59:55,102 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:55,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:55,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2112988820, now seen corresponding path program 1 times [2021-11-25 18:59:55,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:55,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511846794] [2021-11-25 18:59:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:55,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1290 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1273 trivial. 0 not checked. [2021-11-25 18:59:55,323 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:55,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511846794] [2021-11-25 18:59:55,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511846794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:55,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:55,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:59:55,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093673130] [2021-11-25 18:59:55,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:55,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:59:55,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:55,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:59:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:59:55,326 INFO L87 Difference]: Start difference. First operand 118861 states and 162683 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42)