./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-media-pci-cx88-cx8800.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_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/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_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/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_96f347a1-4911-4c8b-bf20-248a66f1028c/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 24e26672720ca570553d18d605e2ce47cd111ea61f1f4153430b6ee115172355 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:47:25,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:47:25,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:47:25,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:47:25,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:47:25,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:47:25,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:47:25,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:47:25,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:47:25,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:47:25,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:47:25,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:47:25,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:47:25,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:47:25,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:47:25,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:47:25,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:47:25,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:47:25,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:47:25,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:47:25,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:47:25,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:47:25,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:47:25,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:47:25,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:47:25,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:47:25,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:47:25,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:47:25,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:47:25,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:47:25,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:47:25,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:47:25,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:47:25,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:47:25,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:47:25,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:47:25,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:47:25,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:47:25,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:47:25,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:47:25,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:47:25,223 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:47:25,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:47:25,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:47:25,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:47:25,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:47:25,284 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:47:25,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:47:25,285 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:47:25,285 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:47:25,286 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:47:25,286 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:47:25,287 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:47:25,288 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:47:25,288 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:47:25,288 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:47:25,289 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:47:25,289 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:47:25,289 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:47:25,290 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:47:25,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:47:25,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:47:25,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:47:25,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:47:25,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:47:25,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:47:25,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:47:25,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:47:25,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:47:25,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:47:25,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:47:25,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:47:25,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:47:25,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:47:25,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:47:25,297 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:47:25,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:47:25,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:47:25,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:47:25,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:47:25,299 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_96f347a1-4911-4c8b-bf20-248a66f1028c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24e26672720ca570553d18d605e2ce47cd111ea61f1f4153430b6ee115172355 [2021-11-25 18:47:25,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:47:25,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:47:25,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:47:25,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:47:25,634 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:47:25,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-25 18:47:25,713 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/data/b95542a5e/e2d9bc32400248cdb89a668067786bd9/FLAG473f28227 [2021-11-25 18:47:26,910 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:47:26,911 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-25 18:47:27,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/data/b95542a5e/e2d9bc32400248cdb89a668067786bd9/FLAG473f28227 [2021-11-25 18:47:27,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/data/b95542a5e/e2d9bc32400248cdb89a668067786bd9 [2021-11-25 18:47:27,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:47:27,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:47:27,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:47:27,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:47:27,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:47:27,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:47:27" (1/1) ... [2021-11-25 18:47:27,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7111b1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:27, skipping insertion in model container [2021-11-25 18:47:27,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:47:27" (1/1) ... [2021-11-25 18:47:27,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:47:27,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:47:33,052 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_96f347a1-4911-4c8b-bf20-248a66f1028c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588527,588540] [2021-11-25 18:47:33,055 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_96f347a1-4911-4c8b-bf20-248a66f1028c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588672,588685] [2021-11-25 18:47:33,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:47:33,229 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:47:34,273 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_96f347a1-4911-4c8b-bf20-248a66f1028c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588527,588540] [2021-11-25 18:47:34,274 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_96f347a1-4911-4c8b-bf20-248a66f1028c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588672,588685] [2021-11-25 18:47:34,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:47:34,606 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:47:34,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:34 WrapperNode [2021-11-25 18:47:34,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:47:34,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:47:34,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:47:34,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:47:34,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:34" (1/1) ... [2021-11-25 18:47:34,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:34" (1/1) ... [2021-11-25 18:47:35,250 INFO L137 Inliner]: procedures = 538, calls = 4280, calls flagged for inlining = 263, calls inlined = 250, statements flattened = 8540 [2021-11-25 18:47:35,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:47:35,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:47:35,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:47:35,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:47:35,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:34" (1/1) ... [2021-11-25 18:47:35,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:34" (1/1) ... [2021-11-25 18:47:35,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:34" (1/1) ... [2021-11-25 18:47:35,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:34" (1/1) ... [2021-11-25 18:47:35,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:34" (1/1) ... [2021-11-25 18:47:35,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:34" (1/1) ... [2021-11-25 18:47:35,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:34" (1/1) ... [2021-11-25 18:47:35,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:47:35,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:47:35,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:47:35,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:47:35,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:34" (1/1) ... [2021-11-25 18:47:35,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:47:35,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:47:35,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:47:36,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:47:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2021-11-25 18:47:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2021-11-25 18:47:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:47:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:47:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2021-11-25 18:47:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2021-11-25 18:47:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_unregister_video [2021-11-25 18:47:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_unregister_video [2021-11-25 18:47:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_cap [2021-11-25 18:47:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_cap [2021-11-25 18:47:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:47:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:47:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_input [2021-11-25 18:47:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_input [2021-11-25 18:47:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2021-11-25 18:47:36,040 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2021-11-25 18:47:36,040 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_fmt_vid_cap [2021-11-25 18:47:36,041 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_fmt_vid_cap [2021-11-25 18:47:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 18:47:36,041 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 18:47:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvnorm [2021-11-25 18:47:36,041 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvnorm [2021-11-25 18:47:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvaudio [2021-11-25 18:47:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvaudio [2021-11-25 18:47:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_vid_ctrl [2021-11-25 18:47:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_vid_ctrl [2021-11-25 18:47:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2021-11-25 18:47:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2021-11-25 18:47:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_slock_of_cx8800_dev [2021-11-25 18:47:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_slock_of_cx8800_dev [2021-11-25 18:47:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 18:47:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 18:47:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_dma [2021-11-25 18:47:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_dma [2021-11-25 18:47:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_shutdown [2021-11-25 18:47:36,045 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_shutdown [2021-11-25 18:47:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-25 18:47:36,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-25 18:47:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2021-11-25 18:47:36,046 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2021-11-25 18:47:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_newstation [2021-11-25 18:47:36,046 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_newstation [2021-11-25 18:47:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_std [2021-11-25 18:47:36,048 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_std [2021-11-25 18:47:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_vdev_init [2021-11-25 18:47:36,049 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_vdev_init [2021-11-25 18:47:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure video_mmap [2021-11-25 18:47:36,050 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mmap [2021-11-25 18:47:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 18:47:36,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 18:47:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:47:36,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:47:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:47:36,053 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:47:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2021-11-25 18:47:36,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2021-11-25 18:47:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-25 18:47:36,054 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-25 18:47:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:47:36,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:47:36,055 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_poll [2021-11-25 18:47:36,055 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_poll [2021-11-25 18:47:36,055 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2021-11-25 18:47:36,055 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2021-11-25 18:47:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querybuf [2021-11-25 18:47:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querybuf [2021-11-25 18:47:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2021-11-25 18:47:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2021-11-25 18:47:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-11-25 18:47:36,057 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-11-25 18:47:36,057 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_setup [2021-11-25 18:47:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_setup [2021-11-25 18:47:36,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:47:36,058 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_stereo [2021-11-25 18:47:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_stereo [2021-11-25 18:47:36,059 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_vbi_fmt [2021-11-25 18:47:36,059 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_vbi_fmt [2021-11-25 18:47:36,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_102 [2021-11-25 18:47:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_102 [2021-11-25 18:47:36,060 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 18:47:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 18:47:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_audio_thread [2021-11-25 18:47:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2021-11-25 18:47:36,061 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2021-11-25 18:47:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2021-11-25 18:47:36,062 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2021-11-25 18:47:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:47:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-25 18:47:36,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-25 18:47:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:47:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:47:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_restart_vbi_queue [2021-11-25 18:47:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_restart_vbi_queue [2021-11-25 18:47:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:47:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_finidev [2021-11-25 18:47:36,066 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_finidev [2021-11-25 18:47:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:47:36,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:47:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2021-11-25 18:47:36,067 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2021-11-25 18:47:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_querycap [2021-11-25 18:47:36,067 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_querycap [2021-11-25 18:47:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:47:36,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:47:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_freq [2021-11-25 18:47:36,068 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_freq [2021-11-25 18:47:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:47:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:47:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_aud_ctrl [2021-11-25 18:47:36,070 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_aud_ctrl [2021-11-25 18:47:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure video_read [2021-11-25 18:47:36,074 INFO L138 BoogieDeclarations]: Found implementation of procedure video_read [2021-11-25 18:47:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 18:47:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 18:47:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_video_mux [2021-11-25 18:47:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_video_mux [2021-11-25 18:47:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 18:47:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 18:47:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2021-11-25 18:47:36,084 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2021-11-25 18:47:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2021-11-25 18:47:36,084 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2021-11-25 18:47:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2021-11-25 18:47:36,085 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2021-11-25 18:47:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:47:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:47:36,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:47:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:47:36,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:47:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 18:47:36,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 18:47:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 18:47:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 18:47:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_sg_init [2021-11-25 18:47:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_sg_init [2021-11-25 18:47:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:47:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:47:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:47:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:47:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure video_release [2021-11-25 18:47:36,088 INFO L138 BoogieDeclarations]: Found implementation of procedure video_release [2021-11-25 18:47:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:47:36,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:47:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:47:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:47:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure restart_video_queue [2021-11-25 18:47:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure restart_video_queue [2021-11-25 18:47:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-25 18:47:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-25 18:47:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-25 18:47:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-25 18:47:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2021-11-25 18:47:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2021-11-25 18:47:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_wakeup [2021-11-25 18:47:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_wakeup [2021-11-25 18:47:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 18:47:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 18:47:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_s_ctrl [2021-11-25 18:47:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_s_ctrl [2021-11-25 18:47:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 18:47:36,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 18:47:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2021-11-25 18:47:36,092 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2021-11-25 18:47:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_enum_input [2021-11-25 18:47:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_enum_input [2021-11-25 18:47:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_dump [2021-11-25 18:47:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_dump [2021-11-25 18:47:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure video_set_drvdata [2021-11-25 18:47:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure video_set_drvdata [2021-11-25 18:47:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_tuner [2021-11-25 18:47:36,094 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_tuner [2021-11-25 18:47:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure res_check [2021-11-25 18:47:36,094 INFO L138 BoogieDeclarations]: Found implementation of procedure res_check [2021-11-25 18:47:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2021-11-25 18:47:36,094 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2021-11-25 18:47:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_buffer [2021-11-25 18:47:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_buffer [2021-11-25 18:47:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-25 18:47:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-25 18:47:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 18:47:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 18:47:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2021-11-25 18:47:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2021-11-25 18:47:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:47:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:47:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_stopper [2021-11-25 18:47:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_stopper [2021-11-25 18:47:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 18:47:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 18:47:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 18:47:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 18:47:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:47:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:47:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_std [2021-11-25 18:47:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_std [2021-11-25 18:47:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2021-11-25 18:47:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2021-11-25 18:47:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_setup [2021-11-25 18:47:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_setup [2021-11-25 18:47:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_free_buffer [2021-11-25 18:47:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_free_buffer [2021-11-25 18:47:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-25 18:47:36,101 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-25 18:47:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:47:36,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:47:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_input [2021-11-25 18:47:36,101 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_input [2021-11-25 18:47:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:47:36,102 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:47:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure res_get [2021-11-25 18:47:36,102 INFO L138 BoogieDeclarations]: Found implementation of procedure res_get [2021-11-25 18:47:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2021-11-25 18:47:36,102 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2021-11-25 18:47:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_resume [2021-11-25 18:47:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_resume [2021-11-25 18:47:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2021-11-25 18:47:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2021-11-25 18:47:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2021-11-25 18:47:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2021-11-25 18:47:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-25 18:47:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-25 18:47:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 18:47:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 18:47:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure video_poll [2021-11-25 18:47:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure video_poll [2021-11-25 18:47:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:47:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:47:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:47:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:47:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_core_put [2021-11-25 18:47:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_core_put [2021-11-25 18:47:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_find [2021-11-25 18:47:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_find [2021-11-25 18:47:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_100 [2021-11-25 18:47:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_100 [2021-11-25 18:47:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_release [2021-11-25 18:47:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_release [2021-11-25 18:47:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_dma [2021-11-25 18:47:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_dma [2021-11-25 18:47:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:47:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2021-11-25 18:47:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2021-11-25 18:47:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 18:47:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 18:47:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure get_queue [2021-11-25 18:47:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queue [2021-11-25 18:47:36,116 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:47:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:47:36,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:47:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:47:36,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 18:47:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 18:47:36,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 18:47:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 18:47:36,119 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2021-11-25 18:47:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2021-11-25 18:47:36,120 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 18:47:36,120 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 18:47:36,120 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2021-11-25 18:47:36,120 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2021-11-25 18:47:36,120 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2021-11-25 18:47:36,120 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2021-11-25 18:47:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:47:36,121 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:47:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:47:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:47:36,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:47:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_101 [2021-11-25 18:47:36,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_101 [2021-11-25 18:47:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2021-11-25 18:47:36,122 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2021-11-25 18:47:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 18:47:36,122 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 18:47:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_tuner [2021-11-25 18:47:36,123 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_tuner [2021-11-25 18:47:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 18:47:36,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 18:47:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_start_vbi_dma [2021-11-25 18:47:36,123 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_start_vbi_dma [2021-11-25 18:47:36,124 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_ir_stop [2021-11-25 18:47:36,124 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_ir_stop [2021-11-25 18:47:36,124 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2021-11-25 18:47:36,124 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2021-11-25 18:47:36,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:47:36,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:47:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 18:47:36,125 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 18:47:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 18:47:36,125 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 18:47:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2021-11-25 18:47:36,126 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2021-11-25 18:47:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 18:47:36,126 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 18:47:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2021-11-25 18:47:36,126 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2021-11-25 18:47:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure get_resource [2021-11-25 18:47:36,127 INFO L138 BoogieDeclarations]: Found implementation of procedure get_resource [2021-11-25 18:47:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:47:36,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:47:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 18:47:36,127 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 18:47:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_initdev [2021-11-25 18:47:36,128 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_initdev [2021-11-25 18:47:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:47:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_slock_of_cx8800_dev [2021-11-25 18:47:36,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_slock_of_cx8800_dev [2021-11-25 18:47:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:47:36,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:47:37,897 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:47:37,901 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:47:38,398 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:48:11,770 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:48:11,894 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:48:13,706 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:48:13,706 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 18:48:13,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:48:13 BoogieIcfgContainer [2021-11-25 18:48:13,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:48:13,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:48:13,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:48:13,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:48:13,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:47:27" (1/3) ... [2021-11-25 18:48:13,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695a4c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:48:13, skipping insertion in model container [2021-11-25 18:48:13,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:47:34" (2/3) ... [2021-11-25 18:48:13,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695a4c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:48:13, skipping insertion in model container [2021-11-25 18:48:13,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:48:13" (3/3) ... [2021-11-25 18:48:13,727 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-25 18:48:13,735 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:48:13,735 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:48:13,822 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:48:13,838 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 18:48:13,839 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:48:13,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 2236 states, 1320 states have (on average 1.2992424242424243) internal successors, (1715), 1334 states have internal predecessors, (1715), 769 states have call successors, (769), 147 states have call predecessors, (769), 146 states have return successors, (762), 761 states have call predecessors, (762), 762 states have call successors, (762) [2021-11-25 18:48:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2021-11-25 18:48:13,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:14,000 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:48:14,000 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:48:14,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:14,013 INFO L85 PathProgramCache]: Analyzing trace with hash 873645182, now seen corresponding path program 1 times [2021-11-25 18:48:14,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:48:14,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960370487] [2021-11-25 18:48:14,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:14,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:48:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-11-25 18:48:15,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:48:15,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960370487] [2021-11-25 18:48:15,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960370487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:15,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:15,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:48:15,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070187519] [2021-11-25 18:48:15,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:15,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:48:15,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:48:15,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:48:15,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:48:15,934 INFO L87 Difference]: Start difference. First operand has 2236 states, 1320 states have (on average 1.2992424242424243) internal successors, (1715), 1334 states have internal predecessors, (1715), 769 states have call successors, (769), 147 states have call predecessors, (769), 146 states have return successors, (762), 761 states have call predecessors, (762), 762 states have call successors, (762) Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-25 18:48:21,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:48:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:23,530 INFO L93 Difference]: Finished difference Result 6316 states and 9194 transitions. [2021-11-25 18:48:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:48:23,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 523 [2021-11-25 18:48:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:23,610 INFO L225 Difference]: With dead ends: 6316 [2021-11-25 18:48:23,610 INFO L226 Difference]: Without dead ends: 4115 [2021-11-25 18:48:23,631 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 18:48:23,635 INFO L933 BasicCegarLoop]: 3410 mSDtfsCounter, 2771 mSDsluCounter, 3110 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2771 SdHoareTripleChecker+Valid, 6122 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:23,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2771 Valid, 6122 Invalid, 1011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 993 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-25 18:48:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-11-25 18:48:24,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 4110. [2021-11-25 18:48:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4110 states, 2468 states have (on average 1.2917341977309562) internal successors, (3188), 2497 states have internal predecessors, (3188), 1353 states have call successors, (1353), 288 states have call predecessors, (1353), 288 states have return successors, (1353), 1348 states have call predecessors, (1353), 1353 states have call successors, (1353) [2021-11-25 18:48:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4110 states to 4110 states and 5894 transitions. [2021-11-25 18:48:24,103 INFO L78 Accepts]: Start accepts. Automaton has 4110 states and 5894 transitions. Word has length 523 [2021-11-25 18:48:24,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:24,106 INFO L470 AbstractCegarLoop]: Abstraction has 4110 states and 5894 transitions. [2021-11-25 18:48:24,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-25 18:48:24,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4110 states and 5894 transitions. [2021-11-25 18:48:24,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2021-11-25 18:48:24,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:24,131 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:48:24,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:48:24,132 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:48:24,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:24,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1003587758, now seen corresponding path program 1 times [2021-11-25 18:48:24,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:48:24,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767932727] [2021-11-25 18:48:24,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:24,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:48:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-11-25 18:48:25,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:48:25,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767932727] [2021-11-25 18:48:25,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767932727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:25,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:25,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:48:25,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154015171] [2021-11-25 18:48:25,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:25,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:48:25,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:48:25,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:48:25,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:48:25,287 INFO L87 Difference]: Start difference. First operand 4110 states and 5894 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-25 18:48:29,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:48:31,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:48:33,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:33,845 INFO L93 Difference]: Finished difference Result 11821 states and 16935 transitions. [2021-11-25 18:48:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:48:33,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 528 [2021-11-25 18:48:33,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:33,944 INFO L225 Difference]: With dead ends: 11821 [2021-11-25 18:48:33,945 INFO L226 Difference]: Without dead ends: 7810 [2021-11-25 18:48:33,972 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 18:48:33,975 INFO L933 BasicCegarLoop]: 3431 mSDtfsCounter, 2761 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2761 SdHoareTripleChecker+Valid, 6107 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:33,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2761 Valid, 6107 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 982 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2021-11-25 18:48:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7810 states. [2021-11-25 18:48:34,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7810 to 7805. [2021-11-25 18:48:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7805 states, 4721 states have (on average 1.2948527854268164) internal successors, (6113), 4778 states have internal predecessors, (6113), 2521 states have call successors, (2521), 562 states have call predecessors, (2521), 562 states have return successors, (2521), 2508 states have call predecessors, (2521), 2521 states have call successors, (2521) [2021-11-25 18:48:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7805 states to 7805 states and 11155 transitions. [2021-11-25 18:48:34,577 INFO L78 Accepts]: Start accepts. Automaton has 7805 states and 11155 transitions. Word has length 528 [2021-11-25 18:48:34,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:34,582 INFO L470 AbstractCegarLoop]: Abstraction has 7805 states and 11155 transitions. [2021-11-25 18:48:34,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-25 18:48:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7805 states and 11155 transitions. [2021-11-25 18:48:34,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2021-11-25 18:48:34,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:34,612 INFO L514 BasicCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:34,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:48:34,613 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:48:34,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:34,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1416517290, now seen corresponding path program 1 times [2021-11-25 18:48:34,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:48:34,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107592878] [2021-11-25 18:48:34,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:34,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:48:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9609 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9606 trivial. 0 not checked. [2021-11-25 18:48:35,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:48:35,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107592878] [2021-11-25 18:48:35,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107592878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:35,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:35,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:48:35,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980328792] [2021-11-25 18:48:35,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:35,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:48:35,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:48:35,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:48:35,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:48:35,456 INFO L87 Difference]: Start difference. First operand 7805 states and 11155 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-25 18:48:38,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:48:41,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:48:44,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:48:45,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:45,447 INFO L93 Difference]: Finished difference Result 23091 states and 32983 transitions. [2021-11-25 18:48:45,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:48:45,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 542 [2021-11-25 18:48:45,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:45,607 INFO L225 Difference]: With dead ends: 23091 [2021-11-25 18:48:45,607 INFO L226 Difference]: Without dead ends: 15385 [2021-11-25 18:48:45,659 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 18:48:45,661 INFO L933 BasicCegarLoop]: 3648 mSDtfsCounter, 2978 mSDsluCounter, 3119 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:45,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2980 Valid, 6320 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 990 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2021-11-25 18:48:45,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15385 states. [2021-11-25 18:48:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15385 to 15379. [2021-11-25 18:48:46,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15379 states, 9325 states have (on average 1.2946916890080429) internal successors, (12073), 9433 states have internal predecessors, (12073), 4933 states have call successors, (4933), 1120 states have call predecessors, (4933), 1120 states have return successors, (4933), 4913 states have call predecessors, (4933), 4933 states have call successors, (4933) [2021-11-25 18:48:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15379 states to 15379 states and 21939 transitions. [2021-11-25 18:48:46,685 INFO L78 Accepts]: Start accepts. Automaton has 15379 states and 21939 transitions. Word has length 542 [2021-11-25 18:48:46,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:46,688 INFO L470 AbstractCegarLoop]: Abstraction has 15379 states and 21939 transitions. [2021-11-25 18:48:46,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-25 18:48:46,689 INFO L276 IsEmpty]: Start isEmpty. Operand 15379 states and 21939 transitions. [2021-11-25 18:48:46,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2021-11-25 18:48:46,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:46,710 INFO L514 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 51, 51, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:46,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:48:46,711 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:48:46,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:46,712 INFO L85 PathProgramCache]: Analyzing trace with hash -160552341, now seen corresponding path program 1 times [2021-11-25 18:48:46,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:48:46,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904909372] [2021-11-25 18:48:46,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:46,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:48:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:48:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10306 trivial. 0 not checked. [2021-11-25 18:48:47,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:48:47,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904909372] [2021-11-25 18:48:47,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904909372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:48:47,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:48:47,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:48:47,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942925709] [2021-11-25 18:48:47,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:48:47,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:48:47,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:48:47,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:48:47,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:48:47,498 INFO L87 Difference]: Start difference. First operand 15379 states and 21939 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, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:48:50,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:48:52,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:48:54,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:48:54,946 INFO L93 Difference]: Finished difference Result 42001 states and 59785 transitions. [2021-11-25 18:48:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:48:54,947 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, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 557 [2021-11-25 18:48:54,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:48:55,120 INFO L225 Difference]: With dead ends: 42001 [2021-11-25 18:48:55,121 INFO L226 Difference]: Without dead ends: 26721 [2021-11-25 18:48:55,491 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 18:48:55,492 INFO L933 BasicCegarLoop]: 3906 mSDtfsCounter, 2709 mSDsluCounter, 3048 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2709 SdHoareTripleChecker+Valid, 6560 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:48:55,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2709 Valid, 6560 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1144 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-25 18:48:55,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26721 states. [2021-11-25 18:48:56,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26721 to 26713. [2021-11-25 18:48:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26713 states, 16225 states have (on average 1.2875808936825885) internal successors, (20891), 16435 states have internal predecessors, (20891), 8508 states have call successors, (8508), 1979 states have call predecessors, (8508), 1979 states have return successors, (8508), 8464 states have call predecessors, (8508), 8508 states have call successors, (8508) [2021-11-25 18:48:57,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26713 states to 26713 states and 37907 transitions. [2021-11-25 18:48:57,115 INFO L78 Accepts]: Start accepts. Automaton has 26713 states and 37907 transitions. Word has length 557 [2021-11-25 18:48:57,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:48:57,116 INFO L470 AbstractCegarLoop]: Abstraction has 26713 states and 37907 transitions. [2021-11-25 18:48:57,117 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, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:48:57,117 INFO L276 IsEmpty]: Start isEmpty. Operand 26713 states and 37907 transitions. [2021-11-25 18:48:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2021-11-25 18:48:57,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:48:57,150 INFO L514 BasicCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:48:57,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:48:57,151 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:48:57,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:48:57,152 INFO L85 PathProgramCache]: Analyzing trace with hash 497808429, now seen corresponding path program 1 times [2021-11-25 18:48:57,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:48:57,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660757438] [2021-11-25 18:48:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:57,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:48:57,719 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:48:57,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304228459] [2021-11-25 18:48:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:48:57,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:48:57,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:48:57,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:48:57,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:49:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:49:00,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 9334 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:49:00,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:49:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9643 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 9447 trivial. 0 not checked. [2021-11-25 18:49:01,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:49:01,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:49:01,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660757438] [2021-11-25 18:49:01,767 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:49:01,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304228459] [2021-11-25 18:49:01,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304228459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:49:01,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:49:01,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:49:01,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739468511] [2021-11-25 18:49:01,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:49:01,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:49:01,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:49:01,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:49:01,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:49:01,771 INFO L87 Difference]: Start difference. First operand 26713 states and 37907 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-25 18:49:04,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:49:07,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:08,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:49:11,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:49:11,798 INFO L93 Difference]: Finished difference Result 66185 states and 93915 transitions. [2021-11-25 18:49:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:49:11,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 583 [2021-11-25 18:49:11,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:49:12,035 INFO L225 Difference]: With dead ends: 66185 [2021-11-25 18:49:12,036 INFO L226 Difference]: Without dead ends: 39571 [2021-11-25 18:49:12,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 581 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 18:49:12,145 INFO L933 BasicCegarLoop]: 3517 mSDtfsCounter, 2816 mSDsluCounter, 2962 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 42 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2819 SdHoareTripleChecker+Valid, 6087 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:49:12,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2819 Valid, 6087 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1024 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2021-11-25 18:49:12,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39571 states. [2021-11-25 18:49:14,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39571 to 39545. [2021-11-25 18:49:14,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39545 states, 24121 states have (on average 1.2907010488785706) internal successors, (31133), 24439 states have internal predecessors, (31133), 12453 states have call successors, (12453), 2970 states have call predecessors, (12453), 2970 states have return successors, (12465), 12383 states have call predecessors, (12465), 12453 states have call successors, (12465) [2021-11-25 18:49:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39545 states to 39545 states and 56051 transitions. [2021-11-25 18:49:14,687 INFO L78 Accepts]: Start accepts. Automaton has 39545 states and 56051 transitions. Word has length 583 [2021-11-25 18:49:14,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:49:14,689 INFO L470 AbstractCegarLoop]: Abstraction has 39545 states and 56051 transitions. [2021-11-25 18:49:14,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-25 18:49:14,689 INFO L276 IsEmpty]: Start isEmpty. Operand 39545 states and 56051 transitions. [2021-11-25 18:49:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2021-11-25 18:49:14,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:49:14,715 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:49:14,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 18:49:14,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:49:14,928 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:49:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:49:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1316392891, now seen corresponding path program 1 times [2021-11-25 18:49:14,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:49:14,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138521489] [2021-11-25 18:49:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:14,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:49:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:49:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9845 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9842 trivial. 0 not checked. [2021-11-25 18:49:16,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:49:16,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138521489] [2021-11-25 18:49:16,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138521489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:49:16,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:49:16,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:49:16,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819402616] [2021-11-25 18:49:16,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:49:16,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:49:16,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:49:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:49:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:49:16,177 INFO L87 Difference]: Start difference. First operand 39545 states and 56051 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 18:49:21,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:49:21,513 INFO L93 Difference]: Finished difference Result 68794 states and 97521 transitions. [2021-11-25 18:49:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:49:21,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 579 [2021-11-25 18:49:21,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:49:21,841 INFO L225 Difference]: With dead ends: 68794 [2021-11-25 18:49:21,841 INFO L226 Difference]: Without dead ends: 48779 [2021-11-25 18:49:21,917 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 18:49:21,920 INFO L933 BasicCegarLoop]: 4018 mSDtfsCounter, 2768 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2768 SdHoareTripleChecker+Valid, 6686 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:49:21,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2768 Valid, 6686 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 18:49:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48779 states. [2021-11-25 18:49:24,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48779 to 48771. [2021-11-25 18:49:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48771 states, 29770 states have (on average 1.2910312395028551) internal successors, (38434), 30165 states have internal predecessors, (38434), 15308 states have call successors, (15308), 3692 states have call predecessors, (15308), 3692 states have return successors, (15323), 15213 states have call predecessors, (15323), 15308 states have call successors, (15323) [2021-11-25 18:49:24,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48771 states to 48771 states and 69065 transitions. [2021-11-25 18:49:24,790 INFO L78 Accepts]: Start accepts. Automaton has 48771 states and 69065 transitions. Word has length 579 [2021-11-25 18:49:24,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:49:24,792 INFO L470 AbstractCegarLoop]: Abstraction has 48771 states and 69065 transitions. [2021-11-25 18:49:24,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 18:49:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 48771 states and 69065 transitions. [2021-11-25 18:49:25,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2021-11-25 18:49:25,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:49:25,102 INFO L514 BasicCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:49:25,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:49:25,103 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:49:25,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:49:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1352318211, now seen corresponding path program 1 times [2021-11-25 18:49:25,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:49:25,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360380519] [2021-11-25 18:49:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:25,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:49:25,501 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:49:25,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966501206] [2021-11-25 18:49:25,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:25,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:49:25,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:49:25,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:49:25,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:49:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:49:28,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 9283 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:49:28,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:49:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9652 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 9444 trivial. 0 not checked. [2021-11-25 18:49:29,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:49:29,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:49:29,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360380519] [2021-11-25 18:49:29,587 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:49:29,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966501206] [2021-11-25 18:49:29,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966501206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:49:29,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:49:29,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:49:29,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517581505] [2021-11-25 18:49:29,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:49:29,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:49:29,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:49:29,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:49:29,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:49:29,590 INFO L87 Difference]: Start difference. First operand 48771 states and 69065 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-25 18:49:32,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:49:37,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:49:37,866 INFO L93 Difference]: Finished difference Result 96675 states and 136974 transitions. [2021-11-25 18:49:37,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:49:37,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 588 [2021-11-25 18:49:37,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:49:38,121 INFO L225 Difference]: With dead ends: 96675 [2021-11-25 18:49:38,121 INFO L226 Difference]: Without dead ends: 48003 [2021-11-25 18:49:38,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 586 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 18:49:38,271 INFO L933 BasicCegarLoop]: 4460 mSDtfsCounter, 2728 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2728 SdHoareTripleChecker+Valid, 7136 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:49:38,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2728 Valid, 7136 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1263 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-25 18:49:38,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48003 states. [2021-11-25 18:49:40,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48003 to 47995. [2021-11-25 18:49:40,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47995 states, 29375 states have (on average 1.291472340425532) internal successors, (37937), 29768 states have internal predecessors, (37937), 14959 states have call successors, (14959), 3660 states have call predecessors, (14959), 3660 states have return successors, (14974), 14851 states have call predecessors, (14974), 14959 states have call successors, (14974) [2021-11-25 18:49:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47995 states to 47995 states and 67870 transitions. [2021-11-25 18:49:40,763 INFO L78 Accepts]: Start accepts. Automaton has 47995 states and 67870 transitions. Word has length 588 [2021-11-25 18:49:40,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:49:40,767 INFO L470 AbstractCegarLoop]: Abstraction has 47995 states and 67870 transitions. [2021-11-25 18:49:40,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-25 18:49:40,767 INFO L276 IsEmpty]: Start isEmpty. Operand 47995 states and 67870 transitions. [2021-11-25 18:49:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2021-11-25 18:49:40,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:49:40,799 INFO L514 BasicCegarLoop]: trace histogram [54, 49, 49, 49, 49, 49, 49, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:49:40,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:49:41,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 18:49:41,013 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:49:41,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:49:41,014 INFO L85 PathProgramCache]: Analyzing trace with hash 579828226, now seen corresponding path program 1 times [2021-11-25 18:49:41,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:49:41,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780141220] [2021-11-25 18:49:41,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:41,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:49:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:49:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9941 trivial. 0 not checked. [2021-11-25 18:49:42,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:49:42,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780141220] [2021-11-25 18:49:42,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780141220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:49:42,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789333205] [2021-11-25 18:49:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:42,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:49:42,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:49:42,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:49:42,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:49:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:49:44,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 9295 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:49:44,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:49:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 9841 trivial. 0 not checked. [2021-11-25 18:49:45,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:49:45,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789333205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:49:45,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:49:45,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 18:49:45,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040296318] [2021-11-25 18:49:45,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:49:45,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:49:45,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:49:45,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:49:45,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:49:45,728 INFO L87 Difference]: Start difference. First operand 47995 states and 67870 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-25 18:49:48,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:50,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:49:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:49:55,225 INFO L93 Difference]: Finished difference Result 97300 states and 137750 transitions. [2021-11-25 18:49:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:49:55,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 588 [2021-11-25 18:49:55,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:49:55,552 INFO L225 Difference]: With dead ends: 97300 [2021-11-25 18:49:55,552 INFO L226 Difference]: Without dead ends: 58935 [2021-11-25 18:49:55,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:49:55,698 INFO L933 BasicCegarLoop]: 3538 mSDtfsCounter, 2903 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2903 SdHoareTripleChecker+Valid, 6064 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:49:55,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2903 Valid, 6064 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-11-25 18:49:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58935 states. [2021-11-25 18:49:58,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58935 to 58923. [2021-11-25 18:49:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58923 states, 36130 states have (on average 1.2945474674785498) internal successors, (46772), 36623 states have internal predecessors, (46772), 18308 states have call successors, (18308), 4484 states have call predecessors, (18308), 4484 states have return successors, (18320), 18169 states have call predecessors, (18320), 18308 states have call successors, (18320) [2021-11-25 18:49:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58923 states to 58923 states and 83400 transitions. [2021-11-25 18:49:59,249 INFO L78 Accepts]: Start accepts. Automaton has 58923 states and 83400 transitions. Word has length 588 [2021-11-25 18:49:59,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:49:59,250 INFO L470 AbstractCegarLoop]: Abstraction has 58923 states and 83400 transitions. [2021-11-25 18:49:59,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-25 18:49:59,251 INFO L276 IsEmpty]: Start isEmpty. Operand 58923 states and 83400 transitions. [2021-11-25 18:49:59,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2021-11-25 18:49:59,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:49:59,284 INFO L514 BasicCegarLoop]: trace histogram [53, 51, 51, 51, 51, 51, 51, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:49:59,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:49:59,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:49:59,505 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:49:59,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:49:59,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1395043930, now seen corresponding path program 1 times [2021-11-25 18:49:59,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:49:59,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486897839] [2021-11-25 18:49:59,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:59,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:49:59,818 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:49:59,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258144315] [2021-11-25 18:49:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:49:59,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:49:59,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:49:59,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:49:59,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:50:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:02,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 9352 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:50:02,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10447 backedges. 988 proven. 0 refuted. 0 times theorem prover too weak. 9459 trivial. 0 not checked. [2021-11-25 18:50:03,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:50:03,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:03,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486897839] [2021-11-25 18:50:03,634 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:50:03,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258144315] [2021-11-25 18:50:03,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258144315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:50:03,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:50:03,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:50:03,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052846506] [2021-11-25 18:50:03,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:50:03,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:50:03,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:03,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:50:03,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:50:03,638 INFO L87 Difference]: Start difference. First operand 58923 states and 83400 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-25 18:50:06,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:50:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:13,170 INFO L93 Difference]: Finished difference Result 141685 states and 200668 transitions. [2021-11-25 18:50:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:50:13,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 617 [2021-11-25 18:50:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:13,561 INFO L225 Difference]: With dead ends: 141685 [2021-11-25 18:50:13,561 INFO L226 Difference]: Without dead ends: 83498 [2021-11-25 18:50:13,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 615 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 18:50:13,759 INFO L933 BasicCegarLoop]: 4050 mSDtfsCounter, 2793 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2793 SdHoareTripleChecker+Valid, 6624 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:13,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2793 Valid, 6624 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1204 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-25 18:50:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83498 states. [2021-11-25 18:50:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83498 to 83480. [2021-11-25 18:50:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83480 states, 51395 states have (on average 1.298122385446055) internal successors, (66717), 52106 states have internal predecessors, (66717), 25692 states have call successors, (25692), 6392 states have call predecessors, (25692), 6392 states have return successors, (25704), 25493 states have call predecessors, (25704), 25692 states have call successors, (25704) [2021-11-25 18:50:18,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83480 states to 83480 states and 118113 transitions. [2021-11-25 18:50:18,216 INFO L78 Accepts]: Start accepts. Automaton has 83480 states and 118113 transitions. Word has length 617 [2021-11-25 18:50:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:18,217 INFO L470 AbstractCegarLoop]: Abstraction has 83480 states and 118113 transitions. [2021-11-25 18:50:18,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-25 18:50:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 83480 states and 118113 transitions. [2021-11-25 18:50:18,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2021-11-25 18:50:18,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:18,261 INFO L514 BasicCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:50:18,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:18,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:18,485 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:50:18,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:18,486 INFO L85 PathProgramCache]: Analyzing trace with hash -236116605, now seen corresponding path program 1 times [2021-11-25 18:50:18,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:18,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710617531] [2021-11-25 18:50:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:18,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:18,789 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:50:18,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286690883] [2021-11-25 18:50:18,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:18,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:18,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:18,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:18,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f347a1-4911-4c8b-bf20-248a66f1028c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:50:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:21,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 9511 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:50:21,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9643 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 9437 trivial. 0 not checked. [2021-11-25 18:50:22,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:50:22,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:22,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710617531] [2021-11-25 18:50:22,621 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:50:22,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286690883] [2021-11-25 18:50:22,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286690883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:50:22,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:50:22,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:50:22,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559581481] [2021-11-25 18:50:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:50:22,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:50:22,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:50:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:50:22,625 INFO L87 Difference]: Start difference. First operand 83480 states and 118113 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61)